Ill 



MENOBRANCHUS .—Harlan. 



Genus Menobranchus. — Characters. Gills persistent through life; head large; 

 mouth large; upper jaw armed with a single series of small, conical, pointed 

 teeth; palatine teeth in a series nearly concentric with the superior maxillary, and 

 terminating behind the posterior nares; neck contracted, with two spiracles on 

 each side, covered by three branchial tufts; tail compressed laterally, ancipital; 

 extremities four; fingers four; toes four. 



MENOBRANCHUS MACULATUS.— ^«racs. 



Plate XXXVII. 



Characters. Body above dusky cinereous-grey, irregularly interspersed with 

 sub-circular spots of darker hue; a brown stripe extends from the snout back- 

 wards over the eye. 



Stnontmes. Menobranchus maculatus, Barnes, Amer. Jour. Arts and Sci.,vol. xiii. p. 68. 

 Proteus of the Lakes, Mitchell, Amer. Jour. Arts and Scien., vol. iv. p. 181, also vol. 



vii. p. 63. 

 Monograph of Doubtful Animals, Barnes, Amer. Jour. Arts and Scien., vol. xi. p. 268. 

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



Description. The head is large, flattened, with the snout truncated abruptly. 

 The mouth is large, reaching to the eyes, and is covered by thick fleshy lips. 

 The tongue is large, full, entire in front, free and movable only at its apex, and 

 for a short distance along; its lateral and anterior margins. 



