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

144 UNIVERSITY OF KANSAS PUBLS,, MUS. NAT. HIST.
genus Eumeces; according to these figures, the figure of the type
shows seven superciliaries. Taylor (1935a: 78) stated that the type
has "six superciliaries, anterior largest, last next in size." According
to Taylor's figure seven, the only count resulting in "anterior largest,
last next in size" is seven. Accordingly, superciliaries are usually
seven to nine. Infralabials six to seven, supralabials seven, scale
rows at midbody 26 or 28.
Distribution in Sinaloa.—Known only from the southern highlands.
See Fig. 54,
Specimens examined.—1.5 km. E Santa Lucia, 1700 m. ( B KU 44733).
Eumeces parvulus Taylor
Eumeces parvulus Taylor, Proc. Biol. Soc. Washington, 46:175, October 26,
1933 (type locality, Tepic, Nayarit).
Remarks,—A small specimen of Eumeces was discovered in
Sinaloa by Nelson and Goldman during their biological investigations
of Mexico, and was referred to the species parvulus by Taylor
(1933:175), Taylor later (1936c:364) suggested that their specimen
might represent a new species because of certain supposed
anomalies including the presence of a distinct light lateral stripe.
However, Smith (1943b:250), in a short summary of the known
specimens of this species, suggested that the small (8.5 mm.) specimen
from Plomosas is a juvenile, and that the distinct lateral stripe
is a juvenile character.
An adult male from near Plomosas is 47 mm. in snout-vent length
and has the following characters: 24 scale rows around body; 58
dorsal scales from parietal to above anus; frontal contracts frontonasal
and third supraocular; interparietal longer than wide;
parietals enclose interparietal; broad faint lateral stripes present
enclosing six complete and two half scale rows; brown above
changing to gray below; very faint pale brown stripes extend from
rostral along supraoculars to shoulders; sides of head and neck
darker brown than top of head and neck; lower parts of supralabials,
chin, and throat cream-colored; tail brown at base, becoming black
distally, but with ash-gray tip.
The single available specimen conforms to the scale characters
and color pattern described by Taylor (1933:175-78), but the
stripes may be less distinct than those possessed by the type (Taylor,
1936c:603, plate 31, fig. 4). This specimen differs from the description
of the apparently closely related Sonoran species, E. parviauriculatus,
by having the interparietal enclosed by parietals, relatively