40 



MEMOIRS OF THE CARNEGIE MUSEUM. 



21231, M. C. Z., two, larger 50 mm. Hyavary. D. Bourget. 

 21234, M. C. Z., twenty -one, largest 55 mm. Tabatinga. Bourget. 

 6889a, C. M., one, 50 mm. Santarem, Dec. 9, 1909. Haseman. 

 6890a-q, C. M., seventeen, largest 50 mm. Santarem, Dec. 15, 1909. Haseman. 

 6891a-n, C. M., fourteen, largest 60 mm. Villa Bella, Oct. 5, 1909. Haseman. 

 6892a-c, C. M., one, 54 mm. San Joaquin, Sept. 6, 1909. Haseman. 

 6923a, C. M., one, 50 mm. San Antonio de Rio Madeira, Nov. 3, 1909. Hase- 

 man. 

 This species is very similar to paraguayense. 



/IM^ZJA 



Fig. 11. Prionohrama filigcra (Cope), a, side of head; h, top of head; c, d, e, the premaxillary, maxillary 

 and portion of mandible; c', premaxillary of the other side; e', outline of entire mandible showing the extent of 

 dentigerous portion, /, another mandible. 



The scales are eight to fourteen (usually eleven) + twenty-six to thirty = 

 thirty-eight to forty-one, nine or ten between ventrals and dorsal; the origin of the 

 dorsal is equidistant from the base of the middle caudal rays and the anterior margin 

 of the eye, above the origin of the anal. 



Number of anal rays: 31, 

 Number of individuals : 3 



Sj^, 35, 36, 

 2 1 1 



37 

 1 



Genus VI. Paragoniates^'^ Steindachner. 

 Paragoniates Steindachner, Ichthyol. Beitr., Vol. V, 1876, p. 69. 



Type : Paragoniates alburnus Steindachner. 



Teeth mostly tricuspid, the lateral cusps minute, very much smaller than 

 the median cusp; teeth all in a single series, those of the premaxillary anteriorly 



" irapa = besides; dTwi-idrT;?, o = a nervous person; Agoniates, a genus of fishes. 



