486 ADDENDA. 



that of the ventrals, and midway between the end of the snout and 

 the root of the caudal. Caudal fin forked. Pectorals terminating 

 at some distance from the ventrals. Caudal peduncle at least 

 twice as long as deep. A black band, as broad as a scale, runs 

 from the eye to the end of the middle caudal rays. 

 Atlisco. 



fl-o. Forty-six lines long. From M. Boucard's Collection. 



