454 PROCEEDINGS OF THE ACADEMY OF [Oct., 



line to base of caudal with apparently several more on latter; 12 scales 

 obliquely back from origin of dorsal to lateral line; 12 scales between 

 lateral line and origin of anal; snout 3^ to 4 in head; eye 3 to 4f ; 

 maxillary 1^ to If; interorbital space 3f to 4; pectoral If to If; ventral 

 If to If; total length of body Iff to 4f inches. 



Young examples differ somewhat from the adult. The scales on 

 the back are much smaller and crowded in appearance. The origin 

 of the anal begins but a trifle behind that of the dorsal in the vertical, 

 and the anterior portion of the fin is deep. Ventral reaches well 

 beyond origin of anal. The maxillary falls a little short of the pos- 

 terior orbital margin. 



Cope's figure is evidently a little faulty in that the origin of the 

 anal is opposite that of the dorsal, and the spine on the shoulder-girdle 

 in front of the base of the pectoral is omitted. 



CYRTOCHARAX gen. nov. 

 Tj^e Anacyrtus limoesquamis Cope. 

 Scales rough, very small or about 100 or more in lateral line. No 

 palatine teeth. 

 Related to Charax Scopoli. 



{Kuprc?, crooked; -/apa^, Charax; with reference to the form of 

 the body.) 



Cyrtocharax limaesquamis (Cope). Fig. 44. 



Anacyrtus limoisquamis Cope, Proc. Amer. Philos. Soc. Phila., XVII, 1877-78 

 (May 17, 1878), p. 686. Cotypes, Nos. 21,460 (type) and 21,461, A. N. 

 S. P. Peruvian Amazon. Prof. J. Orton. 



Width of head 2\ in its length; interorbital space 3. Body 

 strongly compressed, edges rounded and breast broad. Head com- 

 pressed. Snout broadly convex. Teeth in upper jaw and front 

 of mandible mostly enlarged, those of former biserial with inner 

 larger. Maxillary teeth and those on mandible laterally minute 

 and crowded or numerous. No palatine teeth. Interorbital space 

 convex. Gill-opening forward nearly opposite anterior margin of 

 orbit. Rakers iv, 2 + 7, lanceolate, robust and almost equal orbit. 

 Filaments about f of orbit. Tubes of lateral line simple. Vent close 

 in front of anal. Color in alcohol brownish, greenish evidently copper 

 stain. A broad brass}' shade from gill-opening above to caudal. 

 Fins all brownish without markings. Iris brownish. Length 8^ 

 inches (caudal damaged). Type. 



The other example shows: Head 3J; depth 2-i-; D. ii, 9; A. iv, 39, 

 I ; scales about 96 in lateral line to base of caudal, and about 5 more 



