138 RANID^. 



united. Omosternum with a bouy stjie ; sternum membranous, 

 rudimentary. Terminal phalanges T-shaped. 

 Ecuador. 



1. Hylixalus bocagii. 



Hyloxalus bocagei, Espada, Jorn. Sc. Lish. iii. 1870, p. 59, and Viaj. 

 Pacif., Vertehr. pi. 8. f. 2. 



Snout depressed, projecting, truncate ; canthus rostralis angular ; 

 loreal region nearly vertical ; nostril nearer the tip of the snout 

 than the eye ; interorbital space as broad as the upper eyelid ; 

 tympanum half the width of the eye. First finger not extending 

 beyond second ; toes nearly entirely webbed ; sul:)articular tubercles 

 small ; two metatarsal tubercles. The hind limb being carried 

 forwards along the body, the tibio-tarsal articxxlation reaches in front 

 of the eye. 8kiu quite smooth ; a fold from the eye to the shoulder. 

 Dark olive-brow)i above ; lower surfaces white, immaculate or dotted 

 with brown, Male with a subgular vocal sac. 



Ecuador. 



a-h. c? 2 . Sarayacu. Mr. Buckley rC.]. 



c-e. $. Canelos. Mr. Buckley [0.]. 



2. Hylixalus fuliginosus. 



Hyloxalus fuliginosus, Espada, Jorn. Sc. Lisb. iii. 1870, p. 69, and 

 Viaj. Pacif., Vertehr. pi. 3. f. 1. 



Differs from the preceding in its half -webbed toes and granular 

 upper surfaces. Brown above, white beneath, except the throat. 

 Ecuador. 



16. PROSTHERAPIS. 



Prostherapis, Cope, Proc. Ac. Philad. 1868, p. 137. 



Pupil horizontal. Tongue ellij)tic, entire, free behind. Vomerine 

 teeth none. Tympanum distinct or indistinct. Eingers free : toes 

 nearly free, dilated into distinct disks, each of which exhibits two 

 leather}^ dermal scales on the upper side, separated by a fissure. 

 Outer metatarsals united. Omosternum with a bony style ; sternum 

 membranous, rudimentary. Terminal phalanges T-shaped. 



S. Ameiica. 



1. Prostherapis inguinalis. 



Prostherapis inguinalis. Cope, I. c. 



Snout depressed, with angular canthus rostralis, truncate from 

 above ; loreal region nearly vertical ; nostril nearer the tip of the 

 snout than the eye ; interorbital space broader than the upper eye- 

 lid ; tympanum concealed. First finger longer than second ; toes 

 with a slight rudiment of web ; subarticular tubercles small ; two 



