292 The South American Gharacinidse 



k. 1). 9, A. l,s, V. 8, lat. 1. 36, H tubes. Head 4i, depth 4.] in the 

 lengtli ; eye Si in the liead ; maxillary extending beyond the anterior 

 margin of the orljit. Intermaxillaries with 14, mandibles Avith 18 

 teeth ; maxillary teeth very small occupying about one third of the 

 length of the bone. Caudal slightly forked. Color uniform olive. 



133. pusillus. 



kk. D. 10, A. 20, lat. 1. 37. Depth little more than length of head 

 which is 4 in the length of body; 1"2 teeth in the upper, 18 in the 



lower jaw 134. albumus. 



ij. Lateral line 30. Caudal plain, a dark spot on the upper half of lirst 



dorsal rays, a smaller one near tip of anterior anal rays. Humeral 



spot small. jNIaxillary \\\i\\ microscopic teeth along its entire length. 



135. maxUlaiis. 

 ii. Anal long, of 27-30 rays. 



I. Scales 30-33. No caudal spot, a large black spot on the dorsal fin. 



m. Entire edge of mcLvilhtri/ foofJied. A. 27, lateral line 30; depth 3, 

 head 31. Anterior anal rays elevated, forming a projecting lobe 

 beyond the rest of the fin. Edge of the shorter anal rays dark, this 

 color continued on the elongate rays, dividing them near their 

 middle. A violet spot on upper anterior part of dorsal higher than 

 long 130. agassizii. 



mm. Upper part of maxillary toothed. 



n. A vcrficdl hdnd-Uke hiimrnil spot: a large dark spot covering 

 nearly the entire dorsal. A. 30, lat. 1. 33, depth 22, head 3. 

 Entire edge of anal dark, its rays graduated 137. eques. 



nn. No humeral spot, upper half of first five developed rays of dorsal 

 black. A. 27-30, scales aboiit 31 138. heteresthes. 



II. Scales S8. Lower caudal lolje blackish; color of body olive, yellow 

 below. Premaxillary teeth 7 on each side, maxillary teeth numerous, 

 occupying most of the margin of the bone. Head 5 in the length, 

 depth 4] ; eye 3 in the head. Anal long, the anterior rays much pro- 

 longed, filiform, extending back to the last fifth of the length of the 

 base. D. 10, A. 28 139. filigerus. 



133. Apliyocarax pii§illis Giinther. 



Aphyocarax j)m,s(7//.s Giinther, Proc. Zool. Soc, 245, 1868 (Huallaga ; 

 Xeberos) ; Cope, Proc. Acad. Nat. Sci. Phila., 260, 1871 (Ambyiacu) ; id. 

 Proc. Am. Philos. Hoc, XVII., 689, 1878 (Peruvian Amazon). 



Apliyocarax pusillis Eigenm. & Eigenm., Proc. U. S. Nat. Mus., XIV., 55, 

 1891. 



Hahitat : — Peruvian Amazon ; Hnallaga; Xeberos; Amb3'iacu. 



134. Apliyocarax alburiiiis (Giinther). 



Cheirodon albumus Giinther, Proc. Zool. Soc, 424, 1669, fig. 2 (IVruvian 

 Amazons). 



