Part 17

=Peromyscus banderanus banderanus= Allen

Tarascan Mouse; Spanish, RatA cubedn Tarasco

Peromyscus banderanus Allen, Bull. Amer. Mus. Nat. Hist., 9:51, March 15, 1897, type from Valle de Banderas, Nayarit; Osgood, Jour. Mamm., 26:300, November 14, 1945.

Peromyscus banderanus vicinior Osgood, N. Amer. Fauna, 28:209, 210, April 17, 1909, part.

Range.--Northern and eastern parts of state.

Remarks.--Specimens from Los Reyes referred to the subspecies P. b. vicinior by Osgood (1909:209-210) were later characterized by Osgood (1945:300) as agreeing with specimens from ZitAicuaro, and Osgood (loc. cit.) thought that those from both Los Reyes and ZitAicuaro were not P. b. vicinior but possibly P. b. banderanus. He had this material set aside for further study when he showed it to one of us (Hall) in 1945. It was his intention to revise the entire species (P. banderanus) but so far we know never did this before his death.

=Peromyscus banderanus vicinior= Osgood

Tarascan Mouse; Spanish, RatA cubedn Tarasco

Peromyscus banderanus vicinior Osgood, Proc. Biol. Soc. Washington, 17:68, March 21, 1904, type from La Salada, MichoacAin.

Range.--Hot valleys of western part of state.

Specimens examined, 53: nos. 100543-100592, 100594, 100596, 100599, distributed by localities, from TacAimbaro, as follows: 2-1/2 mi. S and 1 mi. E, 4,700 ft., 21; 4 mi. S and 1 mi E, 4,500 ft., 10; 6 mi. S, 4,000 ft., 6; 6 mi. S and 1 mi. E, 4,000 ft., 16.

Remarks.--There is much variation in size in our animals. The three largest males weigh, in grams, 67.5, 50.3, 48.9 and corresponding figures for the two heaviest, nonpregnant, females are 53.5 and 48.3 grams. Of the 14 adult females, only one was recorded as having embryos; it had two embryos each 24 millimeters in crown to rump length. Where we trapped among big boulders and among the roots of trees of the genus Ficus, Peromyscus banderanus vicinior was the only species of the genus taken. Peromyscus boylii evides occurred in the less tropical vegetation, altitudinally and zonally above P. b. vicinior.

=Peromyscus melanotis= Allen and Chapman

Black-eared Deermouse; Spanish, RatA cubedn MontaA+-ero

Peromyscus melanotis Allen and Chapman, Bull. Amer. Mus. Nat. Hist., 9:203, June 16, 1897, type from Las Vigas, 8,000 ft., Veracruz.

Range.--Higher mountains throughout state.

Specimens examined, 33: nos. 51397-51401, 52142-52166, 52172-52174, from TancA-taro.

Remarks.--The elevation recorded on the label of one specimen is 9,000 feet and on the labels of other specimens is no lower than 10,500 feet and on some is as high as 12,000 feet. The elevation of capture is not recorded for two specimens. Osgood (1909:112) previously recorded the species from 12,000 feet elevation on Mount TancA-taro.

=Oryzomys couesi regillus= Goldman

Tropical Rice Rat; Spanish, Rata Arrocera Tropical; Tarascan word for rat is JeyAiquihuiri (Hayakewire), or Sarisi

Oryzomys couesi regillus Goldman, Proc. Biol. Soc. Washington, 28:129, June 29, 1915, type from Los Reyes, MichoacAin; Goldman, N. Amer. Fauna, 43:37, September 23, 1918.

Range.--Plateau region of Northeast MichoacAin.

Specimens examined, 22: nos. 100601-100622, distributed by localities as follows: 1 mi. N Zamora, 5,450 ft., 2; 4 mi. W Zamora, 5,450 ft., 1; 4 mi. S PAitzcuaro, 7,800 ft., 1; 1 mi. E and 6 mi. S TacAimbaro, 4,000 ft., 18.

Remarks.--The tooth-row is longest in the specimens from Zamora, shortest in those from TacAimbaro and intermediate in length in the one specimen from PAitzcuaro. The shorter tooth-row at the lower elevation (TacAimbaro), we interpret as intergradation with Oryzomys couesi mexicanus. In color the specimens from TacAimbaro are, to us, indistinguishable from those from Zamora and PAitzcuaro but the color is notably darker than that of specimens from the vicinity of Apatzingan which are here referred to the subspecies Oryzomys couesi mexicanus. The largest male, fully adult from Zamora weighs 82.9 grams and the largest one from the vicinity of TacAimbaro weighs 73.6 grams.

=Oryzomys couesi mexicanus= Allen

Tropical Rice Rat; Spanish, Rata Arrocera Tropical

Oryzomys mexicanus Allen, Bull. Amer. Mus. Nat. Hist., 9:52, March 15, 1897, type from Hacienda San Marcos, 3,500 ft., Tonila, Jalisco.

Oryzomys couesi mexicanus, Goldman, N. Amer. Fauna, 43:33, September 23, 1918.