324 



PROCEEDINGS OF THE ACADEMY OF 



[June, 



extending forward opposite posterior margin of pupil. Rakers short, 

 lanceolate and weak, in small number. Filaments well developed. 

 Isthmus a little broad. Each scale with several radiating strige. Vent 

 placed about last f in space between origins of ventrals and anal. 

 Color in alcohol brownish, lower surface paler, and fins still paler. 

 Body with about eleven transverse brownish bands, at first of about 

 equal width with alternate interspaces, but posteriorly interspaces 

 becoming wider. First band nuchal, second and third predorsal, 

 fourth just before origin of dorsal, fifth from middle of base of dorsal, 

 sixth from just behind last dorsal ray, seventh and eighth from post- 

 dorsal region with latter entirely in front of adipose fin, ninth and 

 tenth across caudal peduncle, and eleventh which is dusky on base of 

 caudal. A rather narrow deep brownish band from tip of snout 

 across side of head and embracing lateral line to base of caudal. Dor- 

 sal with at least three brownish longitudinal rather narrow bands or 

 lines, upper ones less distinct. Iris brassy-silvery. Length 1| inches. 



From Dr. Steindachner's description it would hardly seem probal^le 

 that his Characidium purpuratum is identical with C. etheostoma, in 

 fact it falls in a different subgenus as the species are here, understood 

 if there are but 2^ to 3 scales between the origin of the anal and the 

 lateral line. 



Subgenus CHARACIDIUM Reinhardt. 



Scales large transversely, about 3 from opposite origin of anal in an 

 oblique series forward to lateral line. 



Fig. 18. — Characidium stemdachneri Cope. 



