Edentulous Genera of Curimatince, 411 



Type, Anodus elongatus Spix. 



A genus of Curimatinae with clupeiform branchial apparatus. Three 



species, confined to the Amazons and their^tributaries from Villa Bella 



to Peru. 



1. ANODUS IflRIiANOPOGON. 



Anodus melanopogon Cope, '78a, 682 (Peruvian Amazon). 



Slender, head elongate. Muzzle acuminate, mandible projecting. 

 Eye 6 in head, 1| in snout, 1\ in interorbital. Opercle as deep as long. 

 Origin of dorsal little nearer to tip of snout than to base of caudal. 

 Pectorals reaching half-way to ventrals, ventrals half-way to anal. 

 Blackish above, sides and abdomen silvery. Dorsal and caudal dusky. 

 End of mandible black. 



Head 3|; depth more than 6; D. 1. 10; A. I. 10; V. 11; P. 19. Lat. 1. 128. 



2. ANODUS STEATOPS. 



Anodus steatops Cope, '78a, 683 (Peruvian Amazon). 



Jaws equal. A large adipose lid reducing the ovular opening to a 

 vertical slit. Eye 2 in interorbital, more than 5 in head; opercle deeper 

 than long. Origin of dorsal equidistant from tip of snout and base of 

 upper caudal fulcra. Steel-blue, paler below; base of tVie caudal exten- 

 sively black, other fins unspotted; sides of head and operculum above 

 orbit golden; chin and top of head black. 



Head 3.6; depth 5.3; D. I. 10; A, I. 11; V. 12; P. 19. Lat. 1. 93. 



Cope. 



3. ANODUS ELONGATUS. 



Piaba branco. 

 Anodus elongatus Spix, '29a, 61, pi. 40. 



Curimatus elongatus Cuv. and Val., xxii., 20; Castelnau, 'o5a, 58 (Ama- 

 zons); Kner, '59a, 146 (Forte do Principe) ; Gthr. '64, 293 (copied). 

 Elopomorphus elongatus Steind., '81a, 38 (Forte do Principe; Villa Bella). 

 Elopomorphus jordani Gill, 'T8a, May 21st, and '78b, 112. 



Habitat, Northern Brazil. 



2. POTAMORHIIVA. 



POTAMORHINA Cope, '78a, 685 {pristigaster). 



Type, Curimatus pristigaster Steind. 



A genus of a single species. The clupeoid belly, flat breast, naked 

 predorsal line, and small scales, serve to distinguish it from the related 

 genera. 



POTAiVlORIIINA PRISTIGASTER. 



C^irimatus {Anodus) pristigaster Steind., '76a, 25, pi. VI. (Teffe; Barra 



do Rio Negro). 

 Potamorhina pristigaster Cope, '78a, 6S5 (Peruvian Amazon). 



Habitat, Amazons from Barra do Rio Negro to Peru. 



Fifteen specimens, .18 — .29 m. Teffe; Lake Hyanuary. 



