1911.] 



NATURAL SCIENCES OF PHILADELPHIA. 



513 



show the head 4^ to 4| and the depth as 3^ to 3*. Further, A. simus 

 is said to be without a humeral blotch, while A. scierus has two. 

 A. simus is about 3y^- inches in length. In any case the account of 

 A. simus is not in agreement with my material representing the 

 present species. 

 (Ixcep6$ t dusky.) 



PIABUCININ.E. 

 Piabucina aureoguttata sp. nov. Fig. 6. 



Head 4; depth 4; D. n, 8; A. in, 8, i; P. i, 14; V. i, 7; 25 

 scales in a lateral series from shoulder to caudal base, and 4 more 

 on latter; 8 scales between dorsal and ventral origins transversely; 

 14 predorsal scales; head width If its length; head depth at occiput 

 1|; mandible 2y; first branched dorsal ray 2; first branched anal 

 ray 2 T V; least depth of caudal peduncle 2f ; upper caudal lobe 1 T V ; 

 pectoral If; ventral 2; snout 4 in head measured from upper jaw 

 tip; eye 6; maxillary 2f ; interorbital 2f. 



Fig. 6. — Piabucina aureoguttata Fowler. Type. 



Body elongate, compressed, rather heavy forward, profiles similar 

 so contour rather fusiform, greatest depth about ventral origin, 

 and edges all broadly convex. Caudal peduncle well compressed, 

 least depth about If its length. 



Head moderate, profiles slightly convex, surfaces convex above 

 and below, broad, and sides slightly convex. Snout convex over 

 surface and in profile, broad, short, length about If its basal width. 

 Eye small, rounded, but little elevated, and in profile centre about 

 first third in head. Eyelid free, narrow. Pupil large, circular. 

 Maxillary nearly vertical, extends back about opposite front pupil 

 margin, its upper edge slips well below preorbital, bone notched 



