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U.S. NATIONAL MUSEUM BULLETIN 2 88 



ably longer than second, reaching to middle of disk of third which 

 covers about one-half the tympanic area; no projecting rudiment of a 

 pollex; ulnar ridge present but somewhat indistinct. Toes webbed, the 

 web on fourth toe reaching base of the disk, third and fifth toes sub- 

 equal, disk of fourth toe covering about one- third the tympanic area; 

 a distinct oval inner and a smaller but equally distinct rounded outer 

 metatarsal tubercle; a row of conical, soft, wartlike structures along 

 the tarsal ridge; a small dermal appendage on heel. Body somewhat 

 elongate, in postaxillary region a little narrower than greatest width of 

 head; when hind leg is adpressed, heel reaches tip of snout; when limbs 

 are laid along the side, knee reaches nearly to axilla; when hind legs 

 are bent at right angles to body, heels overlap greatly. A small pata- 

 gium extends from the back of upper arm to side of body. Skin of 

 upper parts glandular, with wart-like tubercles arising from various 

 areas in which the glandules of the skin appear particularly concen- 

 trated, these tubercles particularly conspicuous on snout, including 

 loreal and canthal regions, on upper eyelids and occiput, and around 

 anus; a distinct narrow glandular ridge encircling upper part of tym- 

 panum; skin of throat and chest nearly smooth, that of belly and 

 lower surface of thigh uniformly and very finely granular; traces of a 



Figure 20. — Hyla cabrerai, holotype, USNM 152759 (same size, except head 

 profile and mouthparts, which are X 1.3). See also Plate 29 a-c. 



