Eigenmann: New and Rare Fishes from South America. 79 



1914, p. 229, is supplemented by the figures of the type, No. 13451, 

 I. U. M. 



Gnathocharax Fowler. 



Gnathocharax Fowler, Proc. Acad. Nat. Sci. Phila., 1913, p. 560, fig. 19. 



Type, Gnathocharax steindachneri Fowler. 



Closely allied to Gilhertolus of transandean Colombia, with which it 

 agrees in the broad but trenchant breast, the large pectorals which 

 reach the anal, in the length of the anal, the position of the dorsal over 

 the anal, the shape and size of the mouth, etc. It resembles in the 

 general form the species of the genus Charax. It difTers from Gil- 

 hertolus in having four canines of about equal size in the portion of 

 each mandible opposed to the premaxillary; two small conical teeth 

 between the first and second canines, and about fourteen sharp, pointed 

 teeth along the portion of the mandible opposed to the maxillary; 

 premaxillary with a series of about fourteen conical teeth, those op- 

 posed to the canines of the lower jaw smaller than the others; maxillary 

 with a series of over twenty conical teeth along its entire length; 

 maxillary slipping under the pre-orbital for most of its length, its 

 posterior edge thickened; lateral line short. 



This is the Gnathocharax of Fowler. Fowler says his specimens have 

 no maxillary teeth, three pairs' of canines in the lower jaw, and no 

 axillary scale. He places it with the Chalcininae, to which it is 

 but very remotely related. His specimens are very small and the 

 size and difficulty of making out the characters account for the ap- 

 parent dififerences. 



4. Gnathocharax steindachneri Fowler. (Plate XV.) 



Gnathocharax sleindachneri Fowler, Proc. Acad. Nat. Sci. Phila., 1913, p. 561, 

 fig. 19 (Igarape de Candelaria, tributary of the Madeira; Madeira river; tribu- 

 tary of Madeira near Porto Velho). 



6608 a, C. M. 56 mm., Manaos, Nov. 30, 1909. Haseman. 



Head 4-I-; depth 3.33; D. 9; A. 31; scales 36, eleven between dorsal 

 and anal; eye 2.4 in the length of the head; interorbital equals snout, 

 4 + in the length of the head. 



Compressed; ventral profile from chin to ventrals a segment of a 

 circle, anal base straight; profile from snout to occiput slightly concave, 

 from occiput to dorsal slightly curved, from origin of dorsal to caudal 

 similar to the corresponding ventral profile; breast broader than any 

 other portion of the body, with a median ridge; back narrow, about 



