1904.] NATURAL SCIENCES OF PHILADELPHIA. 239 



DESCRIPTION OF A NEW RACE OF NOTROPIS CHALYB^US FROM 

 NEW JERSEY. 



BY HENRY W. FOWLER. 



Notropis chalybaeus abbotti subsp. nov. Plate XVII (upper figure). 



Cliola chah/bwa Cope, Proc. Acad. Nat. Sci. Phila., 1883 (1884), p. 132. A 

 broken dam on the Batsto river, New Jersey. 



Head 3|; depth 4|; D. ii, 7; A. ii, 7; P. i, 13?; V. i, 7; scales 33 

 in lateral line to base of caudal; 17 scales before dorsal; 7 scales 

 obliquel}^ back from origin of dorsal to lateral line; 4 scales 

 obliquely forward from origin of anal to lateral line; width of 

 head If in its length; depth of head If; snout 3|; eye 3; maxillary 

 3^; interorbital space 2f; length of depressed dorsal 1; anal 1^; 

 pectoral If; ventral H; least depth of caudal peduncle 2|; length 

 of caudal peduncle, measured from base of last anal ray 1^; caudal 

 3f in head and trunk. 



Body robust, elongate, and compressed, greatest depth about tip 

 of pectoral. Lower profile a little more convex than upper. Caudal 

 peduncle rather stout, compressed, and its least depth about | of its 

 length. 



Head rather large, robust, compressed, and somewhat conic in front. 

 Profiles similar. Snout broad, conic, convex, and about even with 

 jaws. Eye circular, close to upper profile, and anterior in head. 

 Mouth small, a little oblique, and jaws about even. Lips rather fleshy. 

 Maxillary small, barely reaching beyond posterior nostril or to front 

 rim of orbit, and more or less concealed. Pharyngeal teeth 2, 4-4, 2, 

 and larger ones a little hooked. Nostrils large, adjoining, near upper 

 front of orbit, and frenum between forming a small flap over front of 

 posterior which is a little larger. 



Gill-opening extending forward within a short distance of posterior 

 margin of orbit. Rakers few, weak, and small. Filaments well 

 developed, also pseudobranchise. 



Scales large, not with exposed edges narrowly imbricated, those in 

 front of dorsal smaller and somewhat crowded in appearance. A few 

 scales on base of caudal, fins and head otherwise naked. Lateral line 

 decurved a little at first, and then continued more or less medianly 

 after base of anal to base of caudal. Tubes simple. 



Origin of dorsal a little nearer base of caudal than tip of snout, 



