1 66 Memoir Sears Foundation for Marine Research 



Head about Vs as long as trunk to origin of caudal. Snout blunt-conical, its length 

 in front of mouth about Va length of head to origin of pectorals. Distance between nostrils 

 about Vs as long as snout in front of mouth. Eye approximately spherical, or a little higher 

 than broad, much larger than in vulpmus, its diameter a little more than Y2 as long as 

 snout in front of mouth, or between Vs and Ve as long as head to origin of pectorals. Spira- 

 cle a minute pore in embryo, about level with middle of eye, and behind the latter by a 

 distance equal to about V2 the diameter of eye; also visible on one side on young male 

 but not on other, and probably obsolete in adult. First and and gill openings (a little the 

 longest) about as long as diameter of eye, the 5th between % and •% as long as 2nd, and 

 strongly oblique, the 3rd above origin of pectoral. Nostril approximately transverse, 

 about ^/5 as long as horizontal diameter of eye, its inner end only about ^^ as far from 

 front of mouth as from tip of snout, its anterior margin expanded as a low, subtriangular 

 lobe. Mouth broadly rounded, about % as high as broad. Two labial furrows above, the 

 outer originating at corners of mouth and overlapping the inner, which originates a little 

 farther forward and extends Vs to ^^4 of the way toward the symphysis; one labial furrow 

 below, extending forward a short distance along lower jaw and around corner of mouth. 



Teeth -[5E15- '^^ specimen examined, with one subtriangular cusp; similar in the two 

 jaws, the ist erect, nearly symmetrical, about as broad basally as long, but the others in- 

 creasingly oblique toward corners of jaws, their outer edges more and more strongly 

 convex, their inner margins increasingly concave with even curvature; the ist lower tooth 

 a little shorter than 2nd, and the outer 3 (lower jaw) or 4 (upper jaw) progressively 

 smaller, the outermost of all much the smallest. 



First dorsal originates about midway between perpendiculars at inner corner of 

 pectoral and at origin of pelvics, its vertical height about Ys as great as length of head to 

 origin of pectorals, its anterior margin strongly convex, its apex rounded, its posterior 

 margin weakly concave, its free rear corner only about Y^ to Ye as long as its base, its rear 

 tip overlapping the pelvics for a short distance. Second dorsal only about Yg as long at base 

 as 1st dorsal, its apex broadly rounded, its free rear tip very slender, a little longer than its 

 base, ending anterior to origin of anal by a distance nearly as long as base of 2nd dorsal. 

 Interspace between 2nd dorsal and caudal about % as long as base of ist dorsal. Caudal 

 a little less than Y2 or about 48% of total length, slender, scythe-shaped, much as in 

 vulpinus but with terminal sector somewhat broader and more sharply demarked, though 

 without definite notch, its lower anterior margin more strongly convex. Anal similar 

 to the 2nd dorsal in shape. Pelvics about as long at bases as high, about 1.2 as high verti- 

 cally as 1st dorsal, and a little larger In area, the anterior margins weakly convex, the 

 apices narrowly rounded, the posterior margins strongly and evenly concave. Pectoral 

 about I.I times as long as head and a little less than Y2 as broad as long, Its anterior margin 

 strongly convex toward tip, its apex moderately rounded, the inner margin weakly con- 

 cave toward tip but deeply so toward Inner corner, the latter narrowly rounded. 



Color. Dark mouse gray above and hardly paler below, the posterior margins of the 

 1st dorsal, pectorals and pelvics more or less dusky. 



