17. B0EB0R0CCETES. 18. ZACH^NTJS. 257 



11. Borboroccetes coppingeri. (Plate XVII. fig. 2.) 

 Cacotus coppingeri, G'dnth. Proc. Zool. Soc. 1881, p. 19. 



Tongue entire. Vomerine teeth in two strong oblique series 

 between the choanal. Head depressed ; snout rounded, shorter 

 than the orbital diameter ; nostril equally distant from the eye 

 and the tip of the snout ; interorbital space as broad as the upper 

 eyelid ; no tympanic disk. First finger not extending beyond second; 

 toes slightly fringed, with a rudiment of web ; subarticular tubercles 

 well developed ; two metatarsal tubercles. Tbe hind limb being 

 carried forwards along the body, the tibio-tarsal articulation reaches 

 the hinder edge of the eye. Skin of upper surfaces with very minute 

 tubercles. Olive above. 



W. coast of Patagonia. 



a. 2 ■ Wi coast of Patagonia. Dr. Coppinger [0.]. 



(Type.) 



Cyclorkumpkus fasciatus, Peters, Mon. Berl. Ac. 1869, p. 789 

 (Oystignathus fasciatus, id. ibid. p. 881), appears to belong to this 

 genus. 



Vomerine teeth in two oblique series, a little behind the level of 

 the hinder edge of the choanaa. Tongue entire. Toes free. No 

 palmar tubercle ; two metatarsal tubercles. Skin quite smooth. 

 Brown, with dark cross bars. 



Puerto Montfc, Chili. 



18. ZACKENUS. 

 ZachasnuB, Cope, Journ. Ac. Philad. (2) vi. 1866, p. 94. 



Pupil horizontal. Tongue subcircular, entirely adherent. Vome- 

 rine teeth in a transverse series upon palatine arch. Tympanum 

 distinct. Pingers and toes free, the tips not dilated. Outer meta- 

 tarsals united. Omosternum cartilaginous ; sternum a cartilaginous 

 plate. Terminal phalanges simple. 



Brazil. 



1. Zachsenus parvulus. 



Cystignathus parvulus, Girard, U.S. Explor. Kiped., Hern. p. 35, 



pi. 3. f. 34-38. 

 Zachamus parvulus, Cope, I. c. 



Vomerine teeth disposed upon a transverse series, scarcely inter- 

 rupted in the middle, and obliquely situated behind the choauaa. 

 Snout rounded ; tympanum smaller than the eye. Pingers de- 

 pressed, first longer than second ; toes slender, depressed, bor- 

 dered by a membranous fold ; two metatarsal tubercles. Hind 

 limb a little longer than head and body. Skin everywhere perfectly 

 smooth. Light yellowish or reddish brown above; a chestnut- 

 brown vitta extends from the sn,Qjit r a£er the nostrils, to the anterior 



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