80 ALLAN HANCOCK PACIFIC EXPEDITIONS VOL. 9 



elevated posteriorly near the tip of tail and lies in a definite groove. Anal 

 fin beginning immediately behind the anal opening and lower than dorsal ; 

 it also lies in a groove. Tip of tail projecting beyond ends of fins. Pectoral 

 fins rudimentary, one-half to four-fifths diameter of eye, inserted at 

 the upper edge of gill openings. Eye slightly nearer to angle of jaws than 

 to tip of snout. Pupil elliptical. Gill openings vertical, deeply curved, low 

 on sides, slightly greater in length than orbit. Isthmus broad, slightly 

 wider than length of snout. 



Anterior nostrils just above edge of upper lip, tubular, the tube as 

 long as eye and closer to tip of snout than to eye. Lower side of tube with 

 an elongate, triangular flap of membrane almost equal in height to the 

 tube. Posterior nostrils under edge of upper lip, on a vertical from the 

 anterior edge of the eye; their position marked externally by rather con- 

 spicuous labial barbels, v/hich are almost one half the diameter of the eye 

 in length. Maxillary teeth in two series laterally. The outer series extends 

 as far forward as the posterior nostril with about eight to ten close-set, 

 pointed, sharp, slightly recurved teeth, smaller than those of the inner 

 series. Inner series with about ten more widely spaced and larger teeth. 

 The inner series is continued forward to the midpoint between anterior 

 and posterior nostrils, with a space before the premaxillary teeth begin. 

 Premaxillary teeth in a single series, about five in number around the tip 

 of the upper jaw. Two large canine teeth, close set, side by side, lie just 

 behind the premaxillary row. Vomerine teeth in a single series, anterior 

 tooth largest, becoming progressively smaller posteriorly; about ten teeth 

 on shaft of vomer. Mandibular teeth in a single series, slender, pointed, 

 and equal in size to the outer series of the maxillary but more closely set, 

 about fifteen teeth on a side. The three anterior teeth of each side are 

 somewhat larger and heavier than the more posterior, lateral ones. No 

 teeth lying inside the tip of the lower jaw. 



Body color a light yellowish tan. Dorsally along each side of the fin 

 are large, paired, dark-brown spots, lying close to the fin but not crossing 

 it. From the insertion of the dorsal anteriorly the spots are smaller and 

 not paired. The dark spots on the dorsal side of the head are abruptly 

 smaller than those of the body. Mid-line of the side reddish brown for 

 the entire length of body, with darker spots included at intervals. From 

 these dark spots, dark-brown bars extend down upon the light yellowish 

 ventral surface; anteriorly these bars either meet faintly or are close to- 

 gether, becoming weaker and farther apart posteriorly. Lower jaw and 

 sides of head with small, dark spots. 



