484 Memoir Sears Foundation for Marine Research 



with widely scattered and deeply pigmented epidermal thickenings or dots, presumably 

 luminous (p. 485). 



Head between V3 and ^/4 (about 28%) of length to origin of caudal, its dorsal 

 profile weakly and evenly convex. Snout thick, fleshy, broadly-ovate, its length in front of 

 nostrils only about Yi of length in front of mouth, the distance between nostrils about Yo 

 as long as snout in front of mouth, and length in front of mouth a little more than Ys 

 (about 35 to 36%) of length of head. Eye oval, its lower outline the more convex, its 

 horizontal diameter about % as long as snout in front of mouth or a little longer than 

 distance between nostrils. Spiracle about Vs to Y-i as long as horizontal diameter of eye, 

 behind latter by a distance V3 to V2 as long as diameter of eye, the lower edge a little above 

 center of eye. Nostril near anterior contour of snout, moderately oblique and about Y2 

 as long as diameter of eye, its anterior margin produced as a well developed, narrow-tri- 

 angular lobe, its inner corner about midway between mouth and tip of snout. Mouth about 

 % as high as broad, nearly evenly arcuate. Pit at corner of mouth extending in deep fur- 

 rows about V4 of the distance toward symphysis on upper jaw and nearly as far on lower, 

 but only a very short distance rearward. 



Teeth about ■~5j2=li in specimen examined (counting difficult), the uppers and lowers 

 similar, with 3 (sometimes 4 or 5) sharp cusps, the median much the longest; 2 to 3 

 series functional in each jaw. 



First dorsal brush-shaped, noticeably small, its vertical height only Ve to Yl as great 

 as length of head, its anterior margin very sloping, apex very broadly rounded, posterior 

 margin nearly straight, its free rear corner only a little more than V2 as long as base, its 

 origin a little posterior to tips of pectorals (when latter are laid back), the ist dorsal spine 

 a little more than Va as far from axils of pectorals as from origin of pelvics, with the 

 exposed portion about Y2 as long as horizontal diameter of eye and reaching about Vs the 

 way along anterior margin of fin. Second dorsal about 1.2 times as long at base as ist and 

 about twice as large in area, its general contour subrectangular (rounded in ist dorsal), 

 with nearly straight anterior margin, slightly concave posterior margin and very narrowly 

 rounded apex, its free rear corner a little less than Y2 as long as base and only a little more 

 acute than a right angle, its spine a little anterior to midpoint of bases of pelvics, free for 

 about V2 its length, and reaching about midway along anterior margin of fin. Interspace be- 

 tween 2nd dorsal and caudal only about % as long as base of 2nd dorsal. Caudal a little less 

 than V4 of total length, its upper margin convex, apex broadly truncate, and lower posterior 

 margin with obtuse subterminal notch, thus marking off the terminal sector, its lower an- 

 terior corner rounded, only very slightly expanded (not a definite lobe), its anterior mar- 

 gin approximately Y2 as long as upper margin of fin. Pelvics about as large as 2nd dorsal, 

 their anterior margins slightly convex, apices broadly rounded, posterior margins nearly 

 straight, tips pointed, their origin a little anterior to origin of 2nd dorsal. Pectoral small, 

 a little less than Y2 as long as head, brush-shaped, with transversely truncate tip, rounded 

 corners, the inner not at all produced. 



