eigenmann: the cheirodontin^. 47 



its highest ray reaching beyond tip of last ray; ventrals reaching anal; pectorals 

 small, not reaching ventrals, whose origin is below origin of dorsal. Scales with 

 numerous parallel radial stria?; caudal naked, lateral line incomplete. Scales 

 mostly lost. 



Color uniform; a silvery lateral stripe. 



This species is readily distinguished from uruguayance by its numerous teeth 

 and the very short anal. 



This specimen is very small and in bad repair, but its characters are so well 

 marked that there will be no difficulty in recognizing the species. 



Genus XI. Aphyodite^^ Eigenmann. 



Type : Aphyodite grammica Eigenmann, Mem. Carn. Mus., Vol. V, 1912, p. 314. 



Teeth minute, conical, or but feebly notched, seven on the premaxillary, 

 fifteen or more on the mandible, none on the maxillary; premaxillary feeble, maxil- 

 lary considerably larger, its outer margin convex; its inner margin concave and 

 slightly thickened; sides of mandible much raised; adipose fin well developed; 

 caudal lobes scaled to near their tips; cheeks covered by the third suborbital; 

 postorbitals in three or four pieces, covering about half the width of the postorbital 

 area, the tubes prominent; frontal fontanel about half as long as the parietal; no 

 pseudotympanum ; anal long. 



Distinguished from the related genera, Macropsobrycon, Megalamphodus, and 

 in fact from all the other genera of the subfamily by the scaled caudal. 



22. Aphyodite grammica Eigenmann. 

 Aphyodite grammica Eigenmann, Mem. Carnegie Mus., Vol. V, 1912, p. 314, PL 



XLIV, fig. 5 (Konawaruk). 



Range : British Guiana. 



1882, C. M., type, 32 mm. ; 12162, I. U. M., paratypes, two, 30-32 mm. Kona- 

 waruk, Middle Essequibo, British Guiana. 



Head 4.5; depth 3.33; D. 11; A. 22; scales 4-7 + 23-3. Eye twice as 

 long as the snout, 2.5 in the head; interorbital a little less than the eye. 



Compressed, slender. Head short, compressed, mouth small, oblique; the 

 maxillary not reaching to below the eye, about two-thirds as long as eye; cheeks 

 small, entirely covered by the suborbital below, a naked angle below its anterior 

 margin and a naked border behind it; maxillary margin convex, with three scarcely 

 perceptible teeth, or none. Anal emarginate; ventrals not reaching anal; pectorals 



^' a4>vri, a small fish; SItt) with the force of dite in Aphi-odite, i. e., born of, descended from. 



