272 The South American Characinidse 



extends to the origin of the anal. Diameter of the eye 2-2J, 



snout 4 in the head. Lateral line with 5-7 scales perforated. 



A. 22-24, head 3i-3|, depth 3J,-3| scales 5-31 or 32-3. 



105. bellottii. 

 C^TC- Caiidal and humeral s^jot present, the latter indistinct in 

 schmardee, where the caudal spot is conspicuous and extends to 

 the end of some of the rays. 



I. Ma.riUary without teeth. Indistinct humeral spot small ; a 

 small silvei'v-gTay lateral hand, not very evident, accompanied 

 above a part of its length by a sharp, blue-gray line. Pector- 

 als not quite reaching the centrals. Diameter of the eye 2, 

 snout 32 in the head. Lateral line with 7-8 more rarely 13-16 

 scales perforated. A. 20-23, head 3|, depth 3, scales 5-30 or 

 31-3 106. schmardae. 



ti. Maxillary with teeth. 



K. Humeral sj)ot aurrounded by a bright ring. Maxillary with 

 slender teeth. Caudal .spot deep dark brown. A sharp 

 gray line joins the humeral and caudal spot. Caudal partly 

 scaled, the peduncle ^ery slender. Tlie dorsal fin behind 

 the origin of the ^-entrals, 6-8 scales in the lateral line per- 

 forated. A. 26-28, heafl 3^-3f, depth 2f-2f, scales 5- 

 31-3J 107. ocellifer. 



KK. Humeral spot not surrounded by a bright silrery-gray border. 

 Maxillary irifh 5 small, stout teeth. A greenish lateral band, 

 the humeral and caudal spot indistinct. ]Sliddle of caiidal 

 fin blackish. Body brown, muzzle black, cheeks black punc- 

 tate. Maxillary extends to the middle of the pupil. Dorsal 

 behind tlie ventrals. A. 27, head 3\, depth 2], eye J of the 

 head, scales 7-30-6 108. robustulus. 



CfCs. Ko caudal or true humeral spot, the anterior end of the 

 very conspicuous dark, lateral band m itli an oval expansion 

 resembling alunneral spot. The dark baud l)ordered above 

 hy a very e^•ident sihery band. Dorsiil aljout midway be- 

 tween the tii3 of the snout and base of caudal and over the 

 space between the anal and ventrals. Anal ^Tith first six 

 rays elongate. Maxillary toothless, extends nearly to the 

 centre of the pupil of the eye. D. 10, A. 20-23, head 3',, 

 depth 3j, eye in the head 21 and once in tlie interorljital, 

 scales 32-34 109. heterorhabdus. 



24. Teti'agoiiopterus artedii Cuv. & Yal. 



Cuv. & Yal. XXII., 128 (not Synon. vide Giinther) ; Giinther, Cat. Fi.sh. 

 Brit. Mus., Y., 319 ; Eigenni. & Eigenm., Proc. U. S. Xat. Mus., XIY., 52, 

 1891. 



Habitat .•— ? 



