AMPHIBIANS AND REPTILES. 105 
above, and its length about % its width. Eye a little elongate, 
scarcely elevated in profile, and about midway between tip of 
snout and shoulder, or about over last fourth of mouth. Mouth 
large and gape horizontal. Lips thin, firm, upper slightly over- 
lapping lower all around when mouth closes. Lower lip firm, 
scarcely developed. Viewed below mouth appears broadly con- 
vex with upper edge of snout well produced in front. ‘Teeth 
along edge of upper jaw uniserial, even, obsolete, minute, more 
or less concealed by upper lip and absent from mandible. 
Vomerine teeth small, in 2 posteriorly approximated patches a 
little behind median line between internal nares, and but slightly 
separated. ‘Tongue large, ovoid, broad, posterior edge barely 
notched, surface minutely papillose and largely free except an- 
terior attachment at symphysis. Internal nares rather large and 
placed equidistant to edges of bony interorbital width. External 
nostrils near upper front lateral edge of snout and space between 
Ax Oo ¥% ¥ 
Pickering’s Tree Toad. Hyla pickeringii (Holbrook). 
barely more than half of interorbital space. Internasal space 
shallowly concave. Interorbital space with shallow concave 
median depression, and over each eye a slight convexity. Loreal 
space with an oblique depression from external nostril to eye. 
‘Tympanum deeper than wide, vertical diameter about 2% of hori- 
zontal orbital diameter, rounded, short space behind eye, half 
below, and middle about over rictus. Skin smooth, sparsely 
pustular above, and under surface closely granulated over most 
all portions. Pectoral region and chin sparsely granulated. 
Granules on belly largest and best defined. A cutaneous fold 
across breast not especially pronounced. Fore limbs inserted 
about first 24 in head and trunk, rather slender, and reaching 
a trifle beyond insertion of hind limbs, though not to vent. 
Fingers rather long, 4, rather broadly depressed, dilated at tips 
into broad disks, and that on third finger about half size of 
