514 



U.S. NATIONAL MUSEUM BULLETIN 2 88 



second, just reaching to disk of third, which is twice the diameter of 

 the tympanic area; no projecting rudiment of a pollex; a moderately 

 well-developed, protruding humeral spine. Toes slightly more than 

 one-half webbed, the web on fourth toe reaching base of penultimate 

 phalanx, third and fifth toes subequal, diameter of disk of fourth toe 

 about one-half again as great as the diameter of the tympanic area; a 

 somewhat dried oval inner and a smaller, even-less-distinct rounded 

 outer matatarsal tubercle; no tarsal ridge; no dermal appendage 

 on heel. Body not elongate, in postaxillary region distinctly narrower 

 than greatest width of head; when hind leg is adpressed, heel reaches 

 tip of snout; when limbs are laid along the side, knee and elbow 

 considerably overlap; when hind legs are bent at right angles to body, 

 heels overlap. No patagium present. Skin of upper parts smooth; skin 

 of chin and belly smooth, that of posterior throat region and anterior 

 pectoral region uniformly and heavily wrinkled into pronounced ver- 

 miculoid folds; underside of thighs smooth; no apparent traces of a 

 skinfold across chest; adult male, vocal sac subgular. Skin of head not 

 co-ossified with skull, roof of skull not exostosed. 



Dimensions. — Head and body, 27.4 mm.; head length, 8.8 mm.; 

 head width, 9.6 mm.; femur, 15.3 mm.; tibia, 16.4 mm.; heel-to-toe, 

 20.7 mm.; hand 8 mm. 



Figure 53. — Centrolenella grandisonae, holotype, BM 1910.7.11.68 (X 2). 



