NO. 1556. LIST OF CHARACIN FISHES— EIGENMANN AND OGLE. 13 



anal 23-25; a suiall l)lack humeral spot, a blackish line along 

 the middle of the side and a black line along the base of the 

 anal; dorsal blackish at the end; depth. 22 -2|; head 3^-3-2 ; eye 

 2 in the head; D. 10; scales 32-33, pores 8 or 9; no maxillary 



teeth •ulre-i/i ( Boulenger) , 5. 



hh Sometimes a caudal sjiot not extending to the end of the rays, 

 fading out forward; maxillary with t^\o minute conical teeth; 

 a more or less conspicuous silvery lateral band; caudal deeply 

 lobed; dorsal behind the ventrals, the pectorals extending to the 

 ventrals, ventrals to anal; A. 21-24; head 41; depth 4; scales 



5-32 or 33-4, 6-12 scales with pores gracilis (Reinhardt) , 6. 



hhh Maxillary with four conical ornotched teeth; no lateral band; a 

 small dark spot at base of each caudal lobe, tins all plain; head 

 3.85; depth 2.66; D. 9; A. 19... riddlei Meek, new species, 7.« 

 ggg Maxillary teeth with 4 or more points. 



( Maxillary with one 4-pointed tooth; a single median caudal sjjot 

 continued to end of middle caudal rays; dorsal over ventrals, 

 pectorals not nearly reaching ventrals, ventrals not to anal; 

 a black lateral line; dorsal scales margined with black; head 4; 

 depth 3.2; .scales 32, pores developed on 10 scales; A. 24. 



micropterus Meek, new species, 8. & 

 a Maxillary with two 5-pointed teeth; abroad black band across 

 base of caudal, extending forward to a blunt point, and back- 

 ward as three prongs, a short one along the edge of each lobe 

 and a longer one along the middle rays but not reaching the 

 end of the rays; a dark lateral band; no humeral spot; depth 

 3, head about 3f; eye 2^.. tridens Eigenmann, new species, 9. 

 ff Caudal and humeral spots both developed. 

 j Maxillary teeth conical or 3-pointed. 



k Maxillary with one notched and two conical teeth ; humeral 

 spot indistinct, small; a small, inconspicuous, silvery-gray 

 lateral band, margined above by a sharp, blue-gray line; 

 a well-defined caudal spot; eye very large, 2 in head; 

 snout 3^; A. 20-23; head 3|; depth 3; scales 5-30 or 31-3, 



7-16 scales perforate schmardie (Steindachner), 10. 



kk Maxillary with one 3-pointed tooth. 



I Anal 22; scales about 30; maxillary 2.75 in head; a narrow 



black lateral line lying deeper than the caudal spot and 

 not continued with it; caudal spot well defined, not 

 quite reaching to end of middle rays; lower half of caudal 

 blackish; basal two-thirds of anal dusky; ventrals reach- 

 ing past origin of anal; pectorals past base of ventrals. 

 houlengeri Eigenmann, new species, 11. 



II A. 25-26;- scales 33-36; mouth large, maxillary ,'5 in head, 



caudal spot rather abruptly continued to the end of the 

 middle caudal rays, gradually narrowed in front into a 

 dark lateral line; lower caudal lobe hyaline; distal 

 third of anal dusky; ventrals to anal, pectorals to origin 



« Based on specimens collected by Dr. O. Riddle at Los Castillas, on the Orinoco, 

 and now in the collections of the Field Museum of Natural History. 



& Based on specimens collected by Dr. Oscar Riddle at Los Castillas, on the Orinoco, 

 and now in the collections of the Indiana University, and of the Field Museum 

 of Natural History. 



