_Lynx ruffus escuinapae_ Allen, Bull. Amer. Mus. Nat. Hist.,
19:614, November 14, 1903, type from Escuinapa, Sinaloa.
_Range._--Probably all of state above the Tropical Life-zone.
_Specimen examined_, 1: no. 47818 (U. S. Nat. Mus., Biol. Surv.
Coll.), PAitzcuaro.
_Remarks._--The skull of the male from PAitzcuaro agrees well with
those of topotypes of _L. r. escuinapae_ even to the elongate tympanic
bullae. Because of their elongation the bullae resemble, in some
degree, those of the ocelot. Natives told us that the gato del monte
was resident around PAitzcuaro. Four miles south of PAitzcuaro in a
cornfield at the edge of an area grown up to oak trees and brush,
tracks were seen that our Indian companion identified as those of the
gato del monte.
=Citellus variegatus variegatus= (Erxleben)
Rock Squirrel; Spanish, Ardilla de Pedregal; Tarascan, KuarAiki
(Kuaraki)
_[Sciurus] variegatus_ Erxleben, Syst. Regni, Anim., 1:421,
1777; type locality fixed as Valley of MA(C)xico near the city
of MA(C)xico, by Nelson, Science, N. S., 8:898, December 23, 1898.
_[Citellus] variegatus_, Elliot, Field Columb. Mus. Pub.,
zoAśl. ser. 4:148, 1904.
_Range._--Probably in all semi-arid, rocky habitats of the state.
_Specimens examined_, 11: nos. 100128-100135; 51385-51387, distributed
by localities as follows: 1 mi. N Zamora, 5,450 ft., 1; 3 mi. NW
PAitzcuaro, 6,700 ft., 5; 4 mi. S PAitzcuaro, 7,800 ft., 1; 1-1/2 mi. S
TacAimbaro, 5,700 ft., 1; Mount TancA-taro, 1; Pedregal, TancA-taro, 1;
TancA-taro, 1.
_Remarks._--Rock squirrels were seen along rock fences, around
PAitzcuaro, where they are fairly common. On July 17 and 18, 1947, at
San Juan Parangaricutiro, one of us (Villa) saw these squirrels
running over the newly formed lava bed which was still emitting vapors
and which in places (between boulders) was emitting heat detectable by
the collectors. This is only additional evidence of the animal's
strong predilection for rocks, boulders and cliffs, which has earned
for it, in parts of the western United States, the vernacular name
"rock squirrel" and in MA(C)xico "_Ardilla de Pedregal_."
Howell (1938:138) reported specimens from the following localities:
AcAimbaro, 1; Los Reyes, 1; Mount TancA-taro, 2; PAitzcuaro, 12;
QuerA(C)ndaro, 1; Zamora, 2.
=Citellus adocetus adocetus= Merriam
Lesser Tropical Ground Squirrel; Spanish, Cuiniqui; Tarascan, KuarAiki
(Kuaraki)
_Citellus adocetus_ Merriam, Proc. Biol. Soc. Washington,
16:79, May 29, 1903, type from La Salada, 40 miles south
of Uruapan, MichoacAin.
_Range._--Southern part of state in arid tropical land.
_Specimens examined_, 4: nos. 52000, 52001, 51388, 51389, distributed
by localities as follows: "Near TancA-taro," 2; Acahuato, 1;
Apatzingan, 1,040 ft., 1.
_Remarks._--Ground squirrels of this species are fairly abundant in
the arid tropical parts of the state. Their burrows are usually found
on stony areas along small ravines or under mesquite (_Prosopis
juliflora_) thickets. The name cuiniqui in use by the Spanish speaking
population is merely a corruption of the Tarascan name. Cuiniqui,
therefore, is a particular kind of _ardilla terrA-cola_ (ground
squirrel).
=Sciurus poliopus nemoralis= Nelson
MichoacAin Squirrel; Spanish, Ardilla arborA-cola; Tarascan, UakuA-
(Wakqe)
_Sciurus albipes nemoralis_ Nelson, Proc. Biol. Soc,
Washington, 12:151, June 3, 1898, type from PAitzcuaro,
MichoacAin.
_Sciurus poliopus nemoralis_ Nelson, Proc. Washington Acad.
Sci., 1:50, May 9, 1899.
_Range._--Pine and oak forests of most of state.
_Specimens examined_, 3: nos. 2102 and 2103 Louisiana State University
from 20 mi. E Morelia, 7,300 ft., and no. 1369 B. Villa R. from 1-1/2
km. N San Juan 2,250 meters.
_Remarks._--Tree squirrels of this kind have been reported by Nelson
(1899:51) from PAitzcuaro and Nahuatzin.
The young specimen, no. 2102, [M], has the tail slender, resembling
somewhat that of the _S. p. senex_ from the southward. The underparts
of the female are Warm Buff, more clearly so on the underside of the
legs.
=Sciurus poliopus senex= Nelson
MichoacAin Squirrel; Spanish, Ardilla ArborA-cola; Tarascan, UakuA-
(Wakqe)
_Sciurus poliopus senex_ Nelson, Proc. Biol. Soc. Washington,
17:148, October 6, 1904, type from La Salada, 40 mi. S
Uruapan.
_Range._--Lowlands in southern part of state.
_Specimens examined_, 3: nos. 52004, 52014, 52015, distributed by
localities as follows: TancA-taro, 6,000 ft., 1; Apatzingan,
1,040 ft., 2.
_Remarks._--Specimen number 52014, [M], represents the melanistic
phase of this subspecies.
The upper parts of the hind legs in this specimen are slightly
grizzled. The upper side of the tail is vermiculated with whitish
and the underside of the tail is black.
=Thomomys umbrinus pullus= Hall and Villa
Southern Pocket Gopher; Spanish, Tuza Serrana; Tarascan,
Cumu (Como)
_Thomomys umbrinus pullus_ Hall and Villa, Univ. Kansas Publ.,
Mus. Nat. Hist., 1:251, July 26, 1948, type from 5 miles
south PAitzcuaro, 7,800 ft., MichoacAin.
_Range._--Known only from pine-covered rolling land three to five
miles south of PAitzcuaro.
_Specimens examined_, 17: nos. 100136-100152, distributed by
localities as follows: 3 mi. S PAitzcuaro, 7,800 ft., 1; 4 mi. S
PAitzcuaro, 7,800 ft., 10; 5 mi. S PAitzcuaro, 7,800 ft., 6.
_Remarks._--Most of these pocket gophers were caught in areas
supporting a good growth of pine trees in the same places where the
much larger pocket gopher, _Cratogeomys gymnurus_, lived. Concerning
the individual designated as the type specimen, H. H. Hall (field
notes) writes that when he was making an excavation to reveal the
gopher's burrow (5 inches below the surface), he dug deeper than was
necessary and broke into the burrow of a _Cratogeomys_ directly below.
Another of us (E. R. Hall) had the same experience where the burrow of
a _Thomomys_ was approximately six inches below ground and that of a
_Cratogeomys_ approximately 16 inches below the surface of the ground.
At the time this arrangement led us to wonder if _Thomomys_ was in
some sense a "parasite" on the larger _Cratogeomys_ by levying on food
stores, if _Cratogeomys_ has any, but we found no evidence that such
was the case and from our subsequent trapping concluded that the
two-story arrangement was accidental and not the rule. The habit of
burrowing at different levels probably was one factor which permitted
the two kinds of pocket gophers to live in the same area. The average
weight of these gophers was 86 grams in males and 74 grams in females,
or only an eighth as much as in _Cratogeomys_.
=Cratogeomys gymnurus imparilis= (Goldman)
Plains Pocket Gopher; Spanish, Tuza Llanera; Tarascan,
Cumu (Como)
_Platygeomys gymnurus imparilis_, Goldman, Jour. Mamm., 20:89,
February 14, 1939, type from PAitzcuaro, 7,000 ft., MichoacAin.
_Platygeomys tylorhinus_ Merriam, N. Amer. Fauna, 8:167, pl.
13, fig. 1, January 31, 1895.
_Range._--PAitzcuaro and TacAimbaro, as now known.
_Specimens examined_, 14: nos. 100153-100166, distributed by
localities as follows: 2 mi. W PAitzcuaro, 7,700 ft., 2; 3 mi. S
PAitzcuaro, 7,800 ft., 1; 4 mi. S PAitzcuaro, 7,800 ft., 1; 5 mi. S.
PAitzcuaro, 7,800 ft., 6; 9 mi. SE PAitzcuaro, 8,000 ft., 1; 1-3/4 mi. S
TacAimbaro, 5,700 ft., 1; 1-1/2 mi. S TacAimbaro, 5,700 ft., 2.
_Remarks._--Burrows were common in cultivated fields and along the
roads and trails on the southern and southeastern side of Lake
PAitzcuaro. In the vicinity of TacAimbaro we noted burrows only in the
area between one and a half and two miles south of town where two
specimens were taken. As mentioned in the immediately preceding
account, the small _Thomomys umbrinus pullus_ and the large
_Cratogeomys_ were found in the same area. The color of our specimens
varies from Cinnamon-Brown through Prouts Brown and in some specimens
is Fuscous Black.
Hooper (1946:397) has shown that the genus _Platygeomys_ is not
generically distinct from the earlier named _Cratogeomys_. From
independent study of specimens not examined by Hooper we have
satisfied ourselves that he is correct in synonymizing _Platygeomys_
under _Cratogeomys_. Average and extreme weights of 4 of each sex from
2 to 5 miles south of PAitzcuaro are: [M], 683 (562-819); [F], 558
(438-707) grams.
=Cratogeomys angustirostris= (Merriam)
Plains Pocket Gopher; Spanish, Tuza Llanera; Tarascan,
Cumo (Como)
_Platygeomys tylorhinus angustirostris_ Merriam, Proc. Biol.
Soc. Washington, 16:81, May 29, 1903, type from PatambAin,
10,000 ft., MichoacAin.
_Platygeomys angustirostris_, Goldman, Jour. Mamm., 20:90,
February 14, 1939.
_Range._--Known only from the type locality.
=Cratogeomys varius= (Goldman)
Plains Pocket Gopher; Spanish, Tuza Llanera; Tarascan,
Cumu (Como)
_Platygeomys varius_ Goldman, Jour. Mamm., 20:90, February 14,
1939, type from Uruapan, about 6,000 ft., MichoacAin.
_Range._--Known only from the type locality.
_Remarks._--Specimens from localities intermediate between Uruapan,
the type locality of _C. varius_, and the known localities of
occurence of _Cratogeomys gynmurus imparilis_ are much needed to
ascertain if _C. varius_ is specifically different from _C. g.
imparilis_, or merely subspecifically different.
=Zygogeomys trichopus tarascensis= Goldman
MichoacAin Pocket Gopher; Spanish, Tuza de MichoacAin; Tarascan,
Cumu (Como)
_Zygogeomys trichopus tarascensis_ Goldman, Proc. Biol. Soc.
Washington, 51:211, December 23, 1938, type from six miles
southeast of PAitzcuaro, 8,000 ft., MichoacAin.
_Zygogeomys trichopus_ Merriam, N. Amer. Fauna, 8:196,
January 31, 1895.
_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 PAitzcuaro to TacAimbaro we
noted mounds made by pocket gophers along the road in the highest part
of the pass and supposed that these mounds were made by _Zygogeomys_
although we took no specimens of any kind of pocket gopher in the
pass.
=Zygogeomys trichopus trichopus= Merriam
MichoacAin Pocket Gopher; Spanish, Tuza de MichoacAin; Tarascan,
Cumu (Como)
_Zygogeomys trichopus_ Merriam, N. Amer. Fauna, 8:196, pl. 6,
14-18, January 31, 1895, type from Nahuatzin, MichoacAin.
_Range._--Altitudinally from 6,000 feet to 11,800 feet on Mountains
TancA-taro, PatambAin, and at Nahuatzin.
_Specimens examined_, 9: nos. 51970-51978, all from Mount TancA-taro,
distributed by altitude 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, RatA cubedn Espinoso Occidental;
Tarascan word for mouse is JeyAiqui (Hayake)
_Liomys plantinarensis_ Merriam, Proc. Biol. Soc. Washington,
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