The Amphibians and Reptiles of Sinaloa, Mexico - Smithsonian ...

140 UNIVERSITY OF KANSAS POBLS., MUS. NAT. HIST.
44866), taken June 23, 1955, contains 19 or more ovarian eggs
0.5-1.0 mm. in diameter. The testes of the male, taken on June 23,
1955, are 3 mm. long. These data do not support the contention of
Smith (1939c=329) that the species in ovoviviparous.
Scattered records from southern Sinaloan suggest that this lizard
has a wide range from sea level to near 1750 meters. Specimens
have been reported to be abundant near the oyster shell middens
nearTeacapan (Scott, 1962:23).
Distribution in Sinaloa.—Probably inhabits most of Sinaloa south
of Mazatlan. See Fig. 51.
Specimens examined.—1.5 km. E Santa Lucia, 1750 m. (* KU 44867-68);
2.5 km. E Santa Lucia, 1700 m. (*KU 44866); 2 mi. SE Teacapan (LACM
6687); 8 km. N Villa Uni6n, 135 m. ( S KU 80732).
Literature records.—12 mi. S Presidio (Taylor, 1938:519); 15 mi. S Presidio;
Rosario (Smith, 1939c:330).
Additional records.—Chele, about 300 ft. {UMMZ 110911); 59 mi. S
Mazatlan (FMNH 116621, 116646); near Presidio (UIMNH 21932-34);
Rosario (USNM 47687-88, 47692).
Urosaurus bicarinatus tuberculatus (Schmidt)
Uta tuberculata Schmidt, Amer. Mus. Novitates, 22:4, December 1, 1921
(type locality, Colima, Colima).
Uta btcarinata tuberculata: Mittleman, Jour. Washington Acad. Sci., 31:73-
74,1941.
Urosaurus bicarinatus tuberculatus: Mittleman, Bull. Mus, Comp. ZooL,
91:169-70, September 1942.
Remarks.—Seven females and six males have ten rows of dorsal
tubercles (KU 40467 excluded). The series of enlarged dorsal
scales begins just posterior to the anterior edge of the insertion of
the forelimbs; the postfemoral dermal pocket is absent, and the
imbricate ventral scales are either rounded, rounded and mucronate,
or all mucronate. The frontal is divided in two males (KU 40466-
67) and one female (KU 44099). The total femoral pores in seven
males are 20-27 (22.4), and in the females are 21-23 (22.0). Mittleman
(1942:169) reported the frontal as "variable, usually divided"
and the postfemoral dermal pocket as "variable, occasionally present."
We have examined specimens identified as Urosaurus unicus from
near El Fuerte and are unable to distinguish between "unicus" and
bicarinatus. We agree with Oliver (1943:106) and Tanner and
Robison (1959:82) that Urosaurus unicus is synonymous with Urosaurus
bicarinatus tuberculatus.
Most specimens were collected on tree trunks or branches. The