ZOOLOGY—REPTILES. 
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Dimensions. —Length of head, neck, and body, inches ; greatest breadth of head, If inch ; 
length of anterior extremities, If incli ; of foot, anteriorly, to extremity of longest toe, 1 inch; 
of posterior extremity, 5 inches ; length of hind foot, If inch ; of foot, posteriorly, to distal 
end of longest toe, 2§ inches. 
Habitat. —El Paso Creek. 
Gen. Obs. —This species is remarkable for the great length of its posterior extremities; allied 
to Bana Draytoni, Baird and Girard, hut the posterior extremities appear to be longer. 
FAMILY II. 
HYLIDiE. 
Char. 1. Extremities of toes and fingers enlarged into a disk or viscous pellet, by means of 
which they sustain themselves on smooth surfaces, as leaves, glass, &c.; always found on trees, 
or shrubs, or plants, except in the breeding season. 
Char. 2. Abdomen, in general, covered with small granulations, with glandular openings ; 
teeth, tongue, &c., same as in Banidce. 
HYLA NEBULOSA, Nob. 
Char. —Uniform light gray upon the upper part of the body and sides ; a considerable num¬ 
ber of dark colored subcircular spots, about a line in diameter, scattered over the upper part of 
the body, and upon the sides, in some specimens mingled with irregular blotches upon the back; 
extremities, ash color above, with grayish spots ; abdomen, greenish yellow; chin light yellow ; 
under surface of extremities orange colored ; abdomen and under surface of extremities granu¬ 
lated, terminal disks much flattened ; vomerine teeth in two oblique patches, their anterior and 
posterior extremities on a line with the corresponding margins of the internal nares. 
Dimensions. —Length of head, neck, and body, If inch ; greatest breadth of head, f inch ; 
length of anterior extremities, If inch ; of posterior extremities, 2§ inches to extremity of 
longest toe. 
Habitat. —Tejon Pass. 
Gen. Obs. —Is a much smaller animal than Hyla versicolor , and the markings are very differ¬ 
ent. The back is much less abundantly covered with warts, and the supraciliary ridges, which 
are so much developed in versicolor , are hut slightly so in this species. The extremities are 
much more slender in the latter, and the tibia is of nearly equal length with the thigh, but in 
versicolor it is about a line shorter. This animal resembles Hyla delitescens, hut the skin of H. 
delitescens is smooth ; in both the specimens of nebulosa, the hack is covered with very minute 
pustulations. From the other North American Hylce it may he readily distinguished. 
HYLA SCAPULARIS, Nob. 1 
Var. Hypochondriaca. 
Char. —Of a uniform pale olive color, above, without spots, paler toward the sides ; numerous 
small, elevated, smooth points upon the surface, resembling tubercles ; upper surface of extremi- 
1 The specimens of scapularis are much smaller than those received from Oregon, but I cannot make out that they are 
distinct species. 
