Part 6 (2/2)

_Range._--”Known only from the upper slopes of the mountains in the vicinity of the type locality” (Goldman, 1938:211).

_Remarks._--As we drove an automobile from Patzcuaro to Tacambaro we noted mounds made by pocket gophers along the road in the highest part of the pa.s.s and supposed that these mounds were made by _Zygogeomys_ although we took no specimens of any kind of pocket gopher in the pa.s.s.

=Zygogeomys trichopus trichopus= Merriam

Michoacan Pocket Gopher; Spanish, Tuza de Michoacan; Tarascan, c.u.mu (Como)

_Zygogeomys trichopus_ Merriam, N. Amer. Fauna, 8:196, pl. 6, 14-18, January 31, 1895, type from Nahuatzin, Michoacan.

_Range._--Alt.i.tudinally from 6,000 feet to 11,800 feet on Mountains Tancitaro, Patamban, and at Nahuatzin.

_Specimens examined_, 9: nos. 51970-51978, all from Mount Tancitaro, distributed by alt.i.tude as follows: 6,000 ft., 5; 7,800 ft., 3; 10,500 ft., 1.

_Remarks._--The upper parts of specimens available to us are rich Seal-Brown and glossy. The chin, and in most specimens, the upper side of the hind feet are white; the irregular white patch of the throat is present only in two young females, numbers 51974 and 51978.

=Liomys pictus plantinarensis= Merriam

Western Spiny Pocket Mouse; Spanish, Raton Espinoso Occidental; Tarascan word for mouse is Jeyaqui (Hayake)

_Liomys plantinarensis_ Merriam, Proc. Biol. Soc. Was.h.i.+ngton, 15:46, March 5, 1902, type from Plantinar, Jalisco.

_Liomys pictus plantinarensis_, Goldman, N. Amer. Fauna, 34:37, September 7, 1911.

_Range._--Northwestern part of state in semitropical areas.

_Remarks._--Goldman (1911:38) records specimens from Los Reyes, noting that in some cranial features they suggest intergradation between _L.

p. plantinarensis_ and _L. p. parviceps_.

=Liomys pictus parviceps= Goldman

Western Spiny Pocket Mouse; Spanish, Raton Espinoso Occidental

_Liomys parviceps_ Goldman, Proc. Biol. Soc. Was.h.i.+ngton, 17:82, March 21, 1904, type from La Salada, ”40 miles south of Uruapan, Michoacan.”

_Liomys pictus parviceps_ Goldman, N. Amer. Fauna, 34:38-39, September 7, 1911.

_Range._--Southern part of state in semitropical and tropical areas.

_Specimens examined_, 28: nos. 100185-100199, 52072-52084, distributed by localities as follows: Apatzingan, 1,040 ft., 13; 1 mi. E and 2-1/2 mi. S Tacambaro, 4,700 ft., 4; 4 mi. S and 1 mi. E Tacambaro, 4,500 ft., 5; 1 mi. E and 6 mi. S Tacambaro, 4,000 ft., 6.

_Remarks._--Most measurements show a s.e.xual dimorphism in this subspecies. Adult males are 15 per cent larger in external measurements except that the foot is approximately the same. Cranial measurements average approximately 5 per cent larger in males except that the breadth of the rostrum and length of the maxillary tooth-row are slightly less. South and east of Tacambaro our specimens all were taken in dry semitropical country, where bananas and sugar cane were the princ.i.p.al crops grown. This subspecies has been recorded also from La Huacana, Michoacan, as well as from La Salada, the type locality, by Goldman (1911:39).

=Liomys irroratus jaliscensis= (Allen)

Northern Spiny Pocket Mouse; Spanish, Raton Norteno

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