252 



PROCEEDINGS OF THE ACADEMY OF 



[Apr., 



entirely uniserial. Mandible with three canines on each ramus, 

 and these graduated to external, which largest. Maxillary with 

 single series of fine small teeth and without canines. Clavicle 

 notched. Lower angle of preopercle ends in spine directed down 

 posteriorly. Cheeks naked. 



Related to Acanthocharax Eigenmann, and Heterocharax Eigen- 

 mann, but differs in the above characters. One species. 



(cjfo?^ sword; .Vry./)«r, Charax; with reference to the long canines.) 

 Xiphocharax ogilviei sp. nov. Fig. 9. 



Head 4; depth 3^; D. iii, 8, i; A. v, 38, i; P. i, 16; V. i, 7; scales 

 78 in 1. 1. to caudal base and 6 more on latter; 26 scales in vertical 

 series between dorsal origin and 1. 1.; 18 scales between anal origin 

 and 1. 1.; 53 scales between dorsal origin and hind end of occipital 



Fig. 9. — Xiphocharax ogilviei Fowler. (Type.) 



process; head width IfV in its length; head depth at occiput 1^; 

 mandible. 1|; first branched dorsal ray 1^; least depth of caudal 

 peduncle 3; ventral If; first branched anal ray 2\; snout 3f in 

 head, measured from upper jaw tip; eye 3|; maxillary ly'V; inter- 

 orbital 3|. 



Body elongate, greatly compressed, form clongately ovoid with 

 greatest depth at ventral origin, edges all convexly rounded with 

 breast broad and depressed and postventral well constricted. Cau- 

 dal peduncle well compressed, its length about | its least depth. 



Head large, deep, well- compressed, though flattened sides not 

 t'onstricted above or below, upper profile concave and lower bulges 



