119 



MENOBRANCHUS .—Harlan. 



Genus Menobbanchus. — Characters. Head large, flattened, truncate; two 

 rows of teeth to upper jaw, a single row to lower; teeth small, conical, pointed; 

 gills and tail persistent during life. 



MENOBRANCHUS LATERALIS.— %. 



Plate XXX. 



Characters. Head large, flattened, snout truncated or shghtly eraarginate; 

 body elongated, cylindrical; tail compressed, ancipital; anterior extremities with 

 four fingers, posterior with four toes; skin smooth, dusky-brown, with a black 

 vitta extending from the nostril through the eye, continued more indistinctly 

 along the side, and terminating on the tail. 



Synonymes. Proteus of the lakes, Mitchell, Amer. Jour. Arts and Scien., vol. iv. p. ISl, 

 also vol. vii. p. 63. 

 Triton lateralis, Say, Long. Exped., vol. i. p. 5. 



Monograph of doubtful animals, Barnes, Amer. Jour. Arts and Scien., vol. xi. p. 26S. 

 Proteus maculatus, Barnes, Amer. Jour. Arts and Scien., vol. xiii. p. 68. 

 Menobranchus lateralis, Harl., Med. and Phys. Res., p. 89. 



Description. The head of the Menobranchus laterahs is large, broad, and 

 flattened above; truncated and almost sub-emarginate at the snout. The nostrils 



