24 PROCEEDINGS OF THE ACADEMY OF [Feb., 



canines each side of palatine area, depressible towards vomer and 

 conic. Vomerine teeth regularly uniserial, begins about opposite 

 front pupil rim, first few a little larger than others which graduate 

 much smaller behind, all conic and sharp pointed, also a little inclined 

 posteriorly. Mandibular teeth uniserial, conic, rather compressed, 

 inclined well posteriorly, mostly equal in size except in front, and all 

 rather smaller than upper lateral teeth. On left symphyseal portion 

 of mandibular ramus 2 enlarged erect and slightly curved conic 

 canines, and on right symphyseal ramus same number. Between 

 all these erect teeth a similar depressible canine, as one at symphysis, 

 one between each erect pair, and a second on right ramus after 

 second erect one. No tongue. Mandible slender, slightly curved, 

 and a trifle shorter than snout tip, shallow, and surface convex. 

 Front nostrils each in rather slender cutaneous tube each side of 

 snout tip, and each about half of horizontal eye-diameter. Hind 

 nostril simple pore above eye front in interorbital space. Latter 

 depressed medianly, slightly convex. 



Gill-opening a little below median axis, nearly horizontal and 

 about equals eye. Pharynx rather swollen and forms greatest body 

 depth. 



Skin smooth, tough. Under surface and lower side of pharynx 

 with several deep longitudinal grooves, about a dozen in number. 

 Upper lip with 4 pores each side, first below nasal tube, third and 

 fourth below eye, and second about midway in snout length. A pair 

 of wide-set small pores at snout tip, another pair between nasal 

 tubes and third pair a trifle nearer snout tip than eye. Each mandi- 

 bular ramus with at least 4 inconspicuous pores. L. 1. not evident. 



Dorsal origin about midway between mouth corner and gill- 

 opening, fin rather high, continuous behind with rather short and 

 acuminate caudal. Latter about I3- in eye. Anal like dorsal, only 

 lower. Vent close before anal. 



Color in alcohol rather light brown, with numerous indistinct 

 mottlings and marblings of paler, especially on back and fins. Edge 

 of dorsal with very narrow and at first marginal, though posteriorly 

 or on tail submarginal, dusky line. On tail behind this replaced 

 by still narrower and entirely marginal creamy edge. Latter con- 

 tinues around tail and whole length of anal, also becomes much 

 wider and distinct on front of anal. Latter apparently without any 

 distinct sub-marginal dark streak. A deep brownish blotch at 

 rictus or corner of mouth. Gill-opening pale. Head rather uniform 

 brownish above, and below paler and immaculate like abdomen. 



