480 PROCEEDINGS OF THE ACADEMY OF [May.. 



circular, scarcely high, and center near first § in head. Mouth small,, 

 inferior, well inclined. Premaxillaries protractile down and forward. 

 Lips thick, fleshy, rather broad. No barbel. Maxillary small, 

 well inclined, more or less concealed, to front nostril. Mandible 

 depressed, small, included in upper jaw, and rami well elevated inside 

 mouth. Tongue obsolete, apparently adnate, fleshy, and scarcely 

 differentiated from floor of mouth. Nostrils large, together, anterior 

 circular with cutaneous posterior margin exposing posterior in narrow 

 crescent. Interorbital broadly and evenly convex. Preorbital large, 

 trapezoidal, length lj in eye. Postorbital width about f of eye, and 

 other suborbitals moderately wide. Posterior margin of preopercle 

 slightly inclined anteriorly. 



Gill-opening forward about to hind eye margin, or nearly midway 

 in head. Rakers about 2 + S short weak feeble points, about ^ of 

 filaments, and latter about § of eye. Pseudobranchia* little less than 

 filaments. Teeth 5-5, compressed, broad, ends curved over in a 

 slight hook, and with slight grinding-surfaces, their edges and sur- 

 faces entire. Intestine long. Peritoneum dark. Long ovipositor 

 (female) nearly equal half of body length. 



Scales large, rather narrowly imbricated on sides of body, and 

 disposed in series parallel with 1. 1. Scales on edges of body a trifle 

 smaller than elsewhere, and on breast much smaller. Short and rather 

 pointed axillary ventral scale. L. 1. complete, decurved a little, and 

 tubes simple, extending over about first § of each exposed scale. 



Dorsal origin about midway between front nostril and caudal base, 

 first branched ray highest, depressed fin about T 6 T to caudal base.. 

 Anal inserted about opposite base of last dorsal ray, first branched 

 ray longest, depressed fin about If to caudal base. Caudal (now 

 damaged) emarginate. Pectoral short, upper rays longest, fin pointed,, 

 reaches about § to ventral. Latter inserted about opposite dorsal 

 origin and reaches vent. Vent close before anal, but immediately 

 in front is the long ovipositor, and though shrunken considerably 

 now evidently protruded as far posteriorly as the end of the caudal.. 

 Color in alcohol largely dull brownish, becoming paler on sides. 

 and below, the latter with silvery reflections. Upper surface of head 

 brownish, slightly dusky on snout and above eyes, and sides bright 

 silvery-white. Muzzle more or less brownish, though mandible pale. 

 Parallel with vertebral column a narrow diffuse dusky streak along 

 trunk, and this most pronounced posteriorly or along side of caudal 

 peduncle. Fins all plain pale brownish. Iris silvery-white. 

 Length (ends of caudal slightly damaged) If inches. 



