1911.] NATURAL SCIENCES OF PHILADELPHIA. 511 



covering most of cheek, larger than eye. Postorbital small, its 

 width about 2 in eye. Opercle width about 2f in its depth. Hind 

 preopercle edge nearly straight, inclined slightly posteriorly. Oc- 

 cipital fontanel rather broad. Head bones all smooth. Opercle 

 membrane over gill-opening rather broad. 



Gill-opening forward about opposite front eye edge. Rakers 

 8 + 9, lanceolate, compressed, pointed, longest about f of filaments. 

 Latter If in eye. No pseudobranchise. Gill-membranes largely 

 separate, only forming short fold anteriorly over narrow and rather 

 convex isthmus. Branchiostegals 4, strong, subequal. 



Scales moderate, well exposed, in longitudinal series parallel 

 with 1. 1., sometimes with many as 18 radiating striae, edges entire 

 and convex. Scales mostly a trifle smaller along edges of body, 

 especially supra-anal region. Caudal base scaly, though scales a 

 little smaller than on body. Base of anal with a row of moderately 

 small scales. Other fins, together with head, naked. No scaly 

 axillary pectoral flap, though that of ventral free, elongate, pointed, 

 and about f length of fin. Scales passing completely over all body 

 edges, except apparently postanal region, though on latter no median 

 naked strip. L. 1. complete, decurved a little below median axis 

 of body and extending a little low along caudal peduncle side up to 

 median caudal base. Tubes simple, at first little exposed, but 

 gradually extend till nearly over first half of scale exposures. 



Dorsal origin about midway between snout tip and caudal base, 

 first branched ray longest with second branched and third simple 

 rays subequal, these all reaching about far back as tips of last rays, 

 and depressed fin nearly half way to caudal base. Adipose fin 

 inserted trifle nearer depressed dorsal tip than caudal base, fin 

 half way to latter. Anal inserted below sixth branched dorsal ray 

 base, first branched ray longest with second branched and fourth 

 simple rays subequal, thus forming slightly elevated anterior lobe. 

 Caudal well forked, lobes pointed and lower (slightly damaged) 

 evidently a little longer. Pectoral with upper rays longest, reaches 

 trifle beyond ventral origin. Latter inserted well before dorsal 

 or a trifle nearer anal than pectoral origin and fin If to anal. Vent 

 about last fourth in space between ventral and anal origins. 



Color when fresh in alcohol rather dark olivaceous-brown above, 

 paler to dull whitish below. All upper surface of body with dark or 

 swarthy appearance, being dusted with minute dusky or blackish 

 dots broadly over edges of scales, this also extending well down 

 over sides or till opposite bases of pectorals. Almost all of body 



