24 University of Michigan 



depressed and but slightly convex. Preorbital trapezoidal, 

 greatest width 4/5 its length and latter 2 in eye. Suborbitals 

 all narrow. Hind preopercle edge slopes little forward. Gill- 

 opening extends forward trifle before hind edge of eye. Gill- 

 rakers 2 -|- 4 short weak points. Pseudobranchiae large, but 

 little shorter than longest gill-filaments. Teeth 4-?, curved 

 little at tips and with slight grinding-surfaces. Scales cy- 

 cloid, mostly uniform or but little smaller on caudal base, 

 predorsal region and breast, and each with number of radiat- 

 ing strise. Ventral axillary scale small, adnate. L. 1. contin- 

 uous, but very little decurved on costal region, and midway 

 along side of caudal peduncle. Tubes simple and each one 

 extends well over exposure of scale for about first 2/3 its 

 space. Dorsal origin midway between front nostril and cau- 

 dal base ; first branched ray longest and depressed fin reaches 

 half way to caudal base. Anal inserted well behind last dorsal 

 ray base, first branched ray longest and depressed fin reaches 

 half way to caudal base. Caudal (damaged) evidently well 

 forked. Pectoral pointed, upper rays longest and reach 3/4 

 to ventral origin. Ventral inserted trifle before dorsal origin, 

 reaches 2/3 to anal. Vent. close before anal. 



Color faded in alcohol to pale brownish, and under surface 

 scarcely paler. Side and lower surface of head, and broad 

 band along side to caudal base silvery-white. Lower surface 

 of body tinted here and there with silvery. Fins all uniform 

 pale brownish. Iris pale creamy. 



Length 63 mm. (caudal damaged). 



No. 4,131, A. N. S. P., cotype (type) of Hybognathns 

 stramineus Cope. Grosse Isle, Detroit River, Michigan. (Prof. 

 Manly Miles) E. D. Cope. Also Nos. 4,132 to 4,136, A. N. 

 S. P., cotypes, same data. 



