FAMILY VIII. ANGUILLID^E. 91 



Head 2 to 2^ in trunk; the fin rays and scales very numerous. 

 Body elongate, rather robust; distance from origin of dorsal to vent 

 i % to 2 in head. 



Color brown above, nearly plain, often tinged with yellowish, paler 

 below, the color very variable. Length 4 to 5 feet. 



This species is apparently abundant in the streams of Mexico 

 north of Tampico. Two specimens were taken by me in the river at 

 San Juan. 



