Part 20

(Orthosia infensa, Walk. 748. Mamestra arachnias, Meyr., Trans. N. Z. Inst. xix. 23. Mamestra infensa, Meyr., ib. xx. 45.)

(Plate V., fig. 12.)

This species has occurred in the North Island at Napier, and in the South Island at Blenheim.

The expansion of the wings is about 1½ inches. The fore-wings are reddish-brown, slightly speckled with dull white except on a suffused central streak from the base to about two-thirds; an obscure, moderately broad white costal streak extends from the base to two-thirds, sharply defined near the base only, and containing several very oblique ill-defined blackish marks; the orbicular is narrow oval, longitudinal, very finely margined with white and then with black; the claviform is obsolete; the reniform is only indicated by two white dots, representing its lower angles; the transverse lines are very acutely dentate but hardly traceable; the subterminal line is indicated only by three very acute slender whitish-ochreous dentations--one below apex, two touching the termen below the middle; the cilia are reddish-brown mixed with dull white. The hind-wings are dark grey; the cilia are dull white, with a faint grey line and tips white. The head, palpi, and thorax are reddish-brown speckled with white; the forehead with two black transverse lines; and the collar with a slender white line; thorax with strong anterior double tuft. Abdomen light reddish-grey.

Description compiled from that of Mr. Meyrick. Figured by Mr. W. B. Hudson from a specimen in Mr. Fereday's collection.

MELANCHRA OMOPLACA, Meyr.

(Mamestra omoplaca, Meyr., Trans. N. Z. Inst. xix. 24.)

(Plate V., fig. 13.)

This species has occurred in the South Island at Lake Coleridge and Rakaia.

The expansion of the wings is about 1½ inches. The fore-wings are dark reddish-brown, there is a short black median streak from the base, margined above with ochreous-white; the space between this and the costa is marked with suffused ochreous-whitish lines; in one specimen {24}a blackish suffusion extending from base of the dorsum obliquely to orbicular and reniform, the space between this and the subterminal line is suffused with pale whitish-ochreous; the orbicular and reniform are blackish-fuscous, black-margined, and connected by a blackish-fuscous spot; the orbicular is large, roundish; the reniform with its outer edge white; the claviform is small, suboval, blackish-fuscous; the transverse lines are indistinct; the subterminal is obscurely paler or hardly traceable, with two somewhat acute dentations below the middle; the terminal space is mixed with blackish-fuscous; the cilia are reddish-fuscous mixed with blackish. The hind-wings are fuscous-grey; the cilia grey-whitish, with a grey line.

The perfect insect appears in December, February, and March.

Description compiled from that of Mr. Meyrick. Figured by Mr. W. B. Hudson from a specimen in Mr. Fereday's collection.

MELANCHRA ALCYONE, n. sp.

(Plate V., fig. 14 .)

During the autumn of 1894 several specimens of this interesting species were captured in the Wellington Botanical Gardens by Mr. A. Norris.

The expansion of the wings of the is 1-5/8 inches, of the 1½ inches. The fore-wings of the male are warm brown, darker towards the base; there is a wavy, white-edged, black, transverse line at about one-fifth, followed by a round black spot; the costa is yellowish, with four pairs of short oblique black marks; the orbicular is large, oval, oblique, pale yellowish-brown slightly darker in the middle; the claviform is small, obscure, and brownish-black; the reniform is black, outlined with dull white; there is a series of very acute, dull white, tooth-like terminal markings, and the termen itself is slightly scalloped; the cilia are dark brown. The hind-wings are grey with a series of small dark marks on the termen; the cilia are reddish-ochreous. The head and anterior portion of the thorax are reddish-ochreous; the rest of the thorax is rich brown, and there is a conspicuous black transverse line between the pale and dark colouring; the abdomen is reddish-ochreous with the crests reddish-brown. The female is much darker and duller than the male, the markings are much less distinct, there are several additional jagged transverse lines, and the white markings of the male are indistinctly indicated in drab.

The perfect insect appears in March.

MELANCHRA DOTATA, Walk.

(Dasypolia dotata, Walk., Noct. 522. Mamestra dotata, Meyr., Trans. N. Z. Inst. xix. 24.)

(Plate V., fig. 16.)

This species has occurred at Nelson.

The expansion of the wings is 1½ inches. The fore-wings are very dark brownish-black; there are several obscure black marks near the base; the orbicular is large, oblong, finely margined with black, the claviform is triangular, also finely margined with black, both orbicular and claviform are surrounded by a conspicuous black shading; the reniform is large ear-shaped, white towards the termen and dark brown towards the base of the wing, the white portion is traversed by a curved brownish line; there is a curved transverse line near the termen, the space immediately inside this line being paler than the rest of the wing; there is a terminal series of obscure pale dots. The hind-wings are dark brown, paler towards the base; the cilia are also brown.

A single specimen of this insect was reared from a pupa found at Wakapuaka, near Nelson. Mr. Fereday also has a specimen, but without note of locality.

MELANCHRA ASTEROPE, n. sp.

(Plate V., fig. 15.)

A single specimen of this insect was taken at light on the Tableland of Mount Arthur, in January 1891, at about 3,600 feet above the sea-level.

The expansion of the wings is 1-3/8 inches. The fore-wings are dull brown with a pale area on the dorsum near the base, and a very broad pale band just before the termen; there is a broken {25}black-edged transverse line near the base, and a fainter transverse line at about one-third; the orbicular is oblong, the claviform crescentic, and the reniform oblong, white, and very conspicuous, all are strongly outlined in black; there is a shaded transverse line on each side of the broad pale terminal band; the termen is dark brown; the cilia are brown, and the veins are marked in black. The hind-wings are pale grey; there is a rather conspicuous dark crescent in the middle, and two shaded transverse lines; the cilia are grey.

This species is evidently allied to Melanchra dotata.