272 Field Museum of Natural History — ZoSlogy, Vol. X. 



Color very dark brownish green above, pale below; sides with 2 

 lateral bands, partly broken into confluent black spots; dorsal, anal 

 and both lobes of caudal each with 2 oblique, black bars; pectorals 

 and ventrals each with more or less black mesially. 



Of this species only 3 specimens, respectively 105, 120 and 135 mm. 

 in length, were taken. All are from the Rio Cupe at Cituro, where this 

 stream is very rocky and seining is difficult. 



The variation in dentition in the specimens at hand has been noted 

 above. From this it is evident that only the largest specimen, the type, 

 is a typical Apareiodon. However, as no other differences are evident, 

 we have identified them all as one species and we tentatively place them 

 under the above named genus. 



18. Genus Phanagoniates Eigenmann & Wilson. 



Phenagoniates Eigenmann & Wilson, Indiana Univ. Studies, No. 19, 

 1914, 2 (type Phenagoniates wilsoni l^\ge.rmia,nn = Rcehoides tna- 

 crolepis Meek & Hildebrand). 



Body elongate, strongly compressed; chest not trenchant; teeth in 

 a single series in each jaw, tricuspid except in posterior part of maxillary 

 where they are conical; anal fin very long, its origin far in advance of 

 dorsal; origin of dorsal a little behind middle of body; pectoral fins long, 

 over-lapping the minute ventrals; no adipose fin; lateral line incomplete. 



24. Phanagoniates macrolepis (Meek & Hildebrand). 



Roehoides macrolepis Meek & Hildebrand, Field Mus. Nat. Hist. Pub., 



Zool. Ser., X, 1913, 84 (Rio Cupe, Boca de Cupe, Rio Tuyra 



Basin) . 

 Phenagoniates wilsoni Eigenmann, Indiana Univ. Studies, No. 19, 19 14, 



(Manigru, Rio Atrato Basin). 

 Phanagoniates wilsoni Eigenmann, Memoir. Carnegie Mus., VII, 1916, 



43, PI. 5» fig- I- 



Head 4.6 to 5.1; depth 3.3 to 3.9; D. 8 or 9; A. 49 to 53; scales in 

 lateral series 40 to 44. 



Body elongate, much compressed, the dorsal profile gently convex, 

 highest at origin of dorsal; head small; snout conical, 3.65 to 4.35 in 

 head; eye 2.6 to 3; interorbital 2.9 to 3.8; mouth small; the lower jaw 

 a little in advance of the upper; maxillary reaching anterior margin of 

 eye; premaxillary teeth tricuspid, 12 in number; maxillary with about 

 8 teeth, the 3 anterior ones similar to premaxillary, the others conical; 

 lower jaw with about 18 tricuspid teeth, a little stronger than pre- 

 maxillary teeth; gill-rakers short, far apart, about 6 on lower limb of 



