BATRACHIAURODELA. H 



attached by an elongated central pedicle, and free upon its poste- 

 rior third. Eyes large. Limbs slender; anterior ones, longest; 

 four fingers; five toes, all free, tapering. Tail subcylindrical, 

 slightly compressed, tapering towards the tip. Skin, exteriorly 

 smooth and soft. v 



SvnIferedia, GRD. Proc. Acad. Nat. Sci. Philad. VIII, 1856, 140. 



OBSERV. No genera are more alike in their external aspect than 

 Heredia and Anaides. To distinguish them we must have recourse to 

 the anatomy of the buccal cavity, although, one might recognize them 

 on a profile view of the head, where the cleft of the mouth would 

 become an important feature. 



HEREDIA OREGOXENSIS, Girard. 

 (Plate I, figs. 18-25.) 



CAR. SPEC. Plicatura sulcollo nulla. Cauda subcyUndrica, gradatim 

 mtnuente, quam corpus et cnput simitl sumpta lonyiore. Pulmarum 

 et 2>I">itrnm diyiti* tcnuibns et dlstinclis, inttrlorilus perparvis. Cute 

 Icevi. Colore supra fusco ; infra dariore. 



SPEC. CHAR. No fold of the .skin under the neck. Tail, subcylin- 

 drical, tapering, longer than the body and head together. Fingers 

 and toes slender and free ; inner one very small. Skin, smooth. 

 Color uniform dark-brown above, lighter beneath. 



SrN. Hiredla oreyoiiensis, GRD. Proc. Acad. Nat. Sci. Philad. VIII, 1856, 141. 

 HALLOW. Proc. Acad. Nat. Sci. Philad. VIII, 1856, 235, 



DESCR. In its general physiognomy this species resembles strik- 

 ingly, Ana ides hujubris. It has the same general shape of the head, 

 neck, body, and limbs ; but the callous termination of the toes is 

 much less developed. 



The head is quite prominent, depressed ; its upper surface sub- 

 concave ; elliptical in outline, when seen from above. The snout is 

 thick and subtruucated, overlapping the lower jaw. The nostrils are 



