2 AKT. S. — S. TANAKA : DESCRIPTIONS OF ONE NEW 



anteriorly from a point nearer eye than tip of snout. Mouth large, 

 moderately curved ; a distinct labial fold at each corner, the 

 fold extending along the lower jaw a little less than t] the distance 

 to the symphysis; the fold along upper jaw li times as long as that 

 along the lower, running toward posterior edge of nostril, but which 

 it does not reach. Lips rather thin ; the lower lip not overlapped 

 by the upper at mouth corner. Teeth on both jaws subequal, in a 

 narrow band, tricuspid, median cusp the largest. Anterior nasal 

 valves well separated from each other and from mouth, each with 

 a cirrus anteriorly. Gill-openings 5, small, middle one the larg- 

 est, the last two closer to each other than others, the last one above 

 base of pectoral. Dorsals subequal in size, small, slender, oblong 

 in form ; distance between two dorsals slightly less than snout 

 length as measured from anterior rim of eye. First dorsal in- 

 serted above posterior end of base of ventral ; posterior end of 

 base of second dorsal before posterior end of base of anal by a 

 distance of two-thirds the diameter of eye. Anal long, higher 

 anteriorly, continuous with caudal but with a deep notch extend- 

 ing almost to fin-base. Pectoral moderate, not reaching ventral 

 by a distance equal to that from eye to first gill -opening. Ven- 

 trals separate, its origin slightly nearer to oi'igin of anal than 

 to last gill-opening. Caudal rather long ; lower lobe higher 

 anteriorly, much more developed than the upper ; continuous 

 with the upper, without notch near tip. 



Scales of body small, tricuspid, giving finely velvety feeling 

 to the touch ; those on caudal peduncle slightly enlarged, with- 

 out keel or pit ; those of head smallest. Mucous system well 

 developed. Lateral line distinct, nearer back than belly, concur- 

 rent with back ; its upward curvature above base of ventral and 

 its downward curvature above anterior part of lower lobe of 



