1914.] NATURAL SCIENCES OF PHILADELPHIA. 257 



villiform teeth in upper jaw, twice as broad as similar mandibular 

 band, and exposed below in specimen as now preserved, as snout 

 protrudes well before mandible. No vomerine teeth. Inner buccal 

 folds broad. Tongue broad, fleshy, not free except along edges, 

 and depressed. Maxillary extends back nearly to last third in 

 snout, with long barbel originating superiorly, depressed basally 

 somewhat, and extending back nearly opposite last anal ray base. 

 Outer mental barbels longer than inner, extend back slightly beyond 

 pectoral origin. Inner mental barbels reach about | of space to 

 pectoral origin. Internasal spaces subequal, posterior pair slightly 

 more remote from one another, and space between front and hind 

 nostril about 1^ in antero-internasal space. Interorbital broad, 

 slightly concave, with fontanel extending back not quite opposite 

 hind edges of eyes, where greatest width obtains, and gradually 

 narrowed forward till it ends about opposite last y in snout length. 

 Occipital and lateral contiguous bones, also predorsal plate, all 

 with fine rugose striae. Opercle with well-marked radiating striae. 



Gill-opening extends forward about opposite last fifth in snout 

 length. Gill-rakers 4 + 14, short, firm, lanceolate, about If in 

 filaments. Latter 2 in eye. Isthmus broad, level. 



Body covered with smooth skin. Head rugosely striated, as 

 mentioned, also occipital process and articulating predorsal bucker, 

 besides exposure of shoulder-girdle over pectoral origin. L. 1. a 

 little high at first, soon becomes median, with more or less alternating 

 short branches most of its course, which continuous out on caudal 

 base. 



Dorsal origin about first f in space between snout tip and caudal 

 base, spine moderate, smooth, slightly curved, with flexible tip and 

 latter slightly less thait tip of first dorsal ray. Adipose fin inserted 

 slightly nearer dorsal origin than caudal base, with contour sloping 

 up to high median apex. Anal inserted slightly behind insertion 

 of adipose fin, first branched ray longest and reaches back well 

 beyond tip of last ray or f of distance to caudal base. Caudal well 

 forked, slender pointed lobes about equal, and emargination of fin 

 nearly | its length. Pectoral low, pointed, spine slender, both edges 

 with small antrorse serrae, with flexible tip which longest of rays, 

 and fin extends 1| to ventral. Latter inserted slightly nearer 

 dorsal origin than origin of adipose fin, and depressed fin reaches 

 I to anal. Vent and genital pore well separated. Genital pore 

 about first sixth in space between inner ventral ray base and anal 

 origin, and vent about first third of same area. 



