Part 36

The beak is very stout, arched from its base; the upper mandible, which is much longer than the other and covering it, is as if cut square at the point. The nostrils pierce the bill pretty high up in the horny portion. The eyes, of which I could not see the colour, are round, and placed, like in the entire family, in front. They are surrounded by a circle or disc of stiff, thread-like feathers, which is interrupted at the sides. A sort of collar is perceptible on the throat. Two tufts, similar to those of the Eagle Owls and Eared Owls, and very apparent, are behind the eyes and towards the top of the occiput.

The wings are a little longer than the tail, the fourth and fifth primaries being the longest, the third and sixth are shorter, and the second still shorter, being equal to the eighth, and the first is shortest of all. The tail reaches to the end of the digits; it is rounded and not much lengthened: all the retrices are equal in length. The ear-tufts are brown, with some slight buff shading, the discal plumes being white marked with buff. All the upper side is of a dark brown colour, the feathers of the head, the neck and the back are edged with rufous, but not very distinctly so; this rufous colour is more apparent on the scapulars, and some of these even have on the outer web one or two whitish patches surrounded with brown.

The large tail feathers are less brown and more rufous in colour, with lighter rufous marbling mixed with brown.

The tertials and secondaries have a darker brown bar towards the centre, and their outer web is pleasantly marked with somewhat square ocelli or irregular bands of white, pale buff, and brown. The large primaries or {74} flight feathers present the same ornamentation, but more strongly developed, and the blotches are buffy white on the inner web, which produces a regular spotting on a brown ground colour; the tip of these large feathers is finely stippled with brown on a fairly pale ground; and there is a large patch of white on the wings in addition.

The throat and abdomen are nicely adorned with dark buff feathers, which have a black brown centre and two to four large round white spots. The large feathers on the flanks are whitish, with a brown shaft line and marked with buff. All the well feathered parts, underneath the feathers are covered by a very thick black down."

The colour of bill and feet is reddish brown. Total length, 13½ inches = 345 mm. Desjardins says the specimen he described was killed at the end of October, 1836, in the forest crowning the hills close to "Bamboo Creek." In 1837 several were still seen near "La Savane," and one was killed at Curepipe by Dr. Dobson of the 99th Regiment. This latter is believed to have been one of, if not the last of this species, so we have to thank that excellent naturalist, Desjardins, and Monsieur Jossigny, the companion of Commerson, that we know what this extinct species was like.

Habitat: Mauritius.

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ATHENE MURIVORA MILNE-EDWARDS.

Strix (Athene) murivora Milne-Edwards, Ann. Sci. Nat. (5) XIX p. 13 (Art. 3.) (1874).

Professor Milne-Edwards described this bird from a tibio-tarsus and a tarso-metatarsus collected in Rodriguez by Sir Edward Newton, and says that he considers it to belong to the genus Athene, because the proportions of the tibio-tarsus and tarso-metatarsus agree with those of that genus. The most remarkable specific characters appear to be that the ridge to which the fibula is articulated is stout, and extends very far along the outer edge of the bone. The diaphysis is large and nearly straight; the distal extremity is furnished with two equal condyles separated by a deep channel.

Tibio-tarsus.

Total length 71 mm. Length from proximal extremity to end of peronial ridge 25 " Width of distal extremity 10 " Width of proximal extremity 9 " Width of shaft 4 "

Tarso-metatarsus.

Total length 46 mm. Width at proximal extremity 10 " Width at distal extremity 15 " Width of shaft 5 "

Habitat: Rodriguez.

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SCELOGLAUX RUFIFACIES BULLER.

Sceloglaux rufifacies Buller, Ibis 1904, p. 639; id. Suppl. B. New Zealand II, p. 65, pl. VII (1906).

Original description: "Adult female: Similar to Sceloglaux albifacies, but appreciably smaller; face dull rufous brown, instead of being white; crown and nape blackish brown; entire upper surface strongly suffused with rufous; quills marked with regular transverse bars and a terminal edging of rufous brown; tail-feathers uniform yellowish brown, obscurely barred with pale brown; bill lemon-yellow; feet dull yellow."

"Wairarapa district, near Wellington, North Island, in the summer 1868-9."

This supposed "species" is a very doubtful one. A close examination in the Tring Museum of the type (which was offered me for such a high price that I did not feel justified in buying it, fond as I am of possessing extinct forms, types and varieties) by Messrs. Hartert, Hellmayr and myself proved beyond doubt to all three of us that the specimen was not fully adult, but showed signs of immaturity. If I said to Sir Walter Buller that it was an extremely young, hardly fledged Sceloglaux this was certainly incorrect, and was perhaps just an exclamation after a hasty preliminary examination, for the bird is of course fully fledged and has passed, at least partially, through one moult of the feathers. On the other hand, both Professor Newton's and Dr. Sharpe's reputed statements that the owl in question is fully adult are not correct. It certainly shows unmistakable signs of immaturity, as noticed at once by Dr. Gadow (cf. Newton's letter on p. 66, l.c.), by Hartert, Hellmayr and myself. Moreover Professor Newton--though Buller says he "pronounced it to be an adult bird"--also admits that the bird "had moulted, though not necessarily to be in adult plumage," and he continues that he thinks the character of the markings continues to be juvenile.

Having thus discussed the age of this owl, the question must be considered if it is different from S. albifacies from the South Island. This is less easily done. Buller described it as a "new species," and mentions among the distinctive characters (see above) the colour of the tail. The tail, however, is "skillfully" (as Buller calls it, though I should use a less complimentary adverb) stuck in, and does not belong to a Sceloglaux, but to an Australian Ninox, and also some feathers on the neck are foreign. The wings being abraded, its slightly smaller length is not very significant. Certainly, however, the colouration in general is slightly more rufous than {78} in S. albifacies, though some of my specimens approach it almost completely, and the face is more rufescent. Professor Newton cautiously warned Sir Walter Buller, suggesting that S. albifacies might possibly have a red "phase," like Syrnium aluco, and this North Island specimen represented the latter. As for myself, I do not think that S. albifacies has two phases, as I have seen too many specimens, and found them to vary but little. I have now in my collection eight specimens from the South Island. On the other hand, I have not seen juvenile examples; but it is very likely that the rufous face of the North Island specimen is a character peculiar to the North Island form, which would then be a sub-species of S. albifacies from the South Island, and should be called S. albifacies rufifacies. The type from Wairapara is said to have been killed in the summer of 1868-9, and, since no further evidence of its existence has come forth, I presume that the North Island race of this owl must be extinct by this time.

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STRIX NEWTONI NOM. NOV.

Strix sp. Newton and Gadow, Trans. Zool. Soc. XIII, p. 287 (1893).

Messrs. Newton and Gadow give the measurements of, and describe a pair of metatarsi procured with the remains described as Strix sauzieri, and state that they do not fit in with that species. For, as they are fully adult bones, it is impossible to attribute their much smaller size to youth. They then add a sentence of which this is the first part: "Unless we assume, what is unlikely, that the Island of Mauritius possessed two different species of Strix, we have to conclude that the short pair of metatarsals belonged to a small individual of Strix sauzieri, ----." Evidently Messrs. Gadow and Newton, when they wrote this, did not remember the fact that throughout a very large portion of the range of Strix flammea, its various geographical races are found side by side with another species of the group of Strix, namely, S. candida and S. capensis, popularly called "Grass owls"; these in nearly every case have the legs considerably longer than in the true Barn Owls (Strix flammea and its races).

Therefore I consider it not in the least unlikely that two species of Strix inhabited Mauritius, and that Strix sauzieri was the Mauritian representative of the "Grass Owls," while these two short metatarsals belonged to the representative of the "Barn Owls." I therefore have much pleasure in naming this form after the collector of these bones, the late Sir Edward Newton.