124 DEEP SEA FISHES. 



of caudal; crown arched, interorbital space sharply convex, apparently 

 without a crest, tentacles, or filaments. Snout somewhat pointed, as long 

 as the eye. Eye large, three tenths of the head. Mouth small, maxillary 

 not reaching to the middle of the eye. Teeth anterior, cusps acicular; a 

 larger, hooked canine behind the series at each side on the lower jaws, and 

 in front of this another smaller and more slender one ; upper teeth similar 

 to the lower ones, but with a single smaller canine at the end of the series 

 near the angle of the mouth. 



Dorsals continuous; the contiguous ends mai'ked by a notch; first spine 

 above the upper angle of the gill opening, above the axil of the ventrals. 

 First anal spine below the ninth spine of the dorsal. Pectorals broadly 

 rounded. Externally the ventrals appear to have only three rays, but 

 dissection uncovers a rudimentary fourth. Caudal subtruncate. Skin 

 smooth ; lateral Ihie on the body indistinct. 



Color above the abdominal cavity very light brownish yellow. Whitish 

 to translucent on the flanks and the sides of the head; belly silvery. A 

 large spot of red on the middle of the pectorals ; upper lip red ; two or 

 three narrow blotches of red across the nape, and a transverse streak of the 

 same color interrupted in the middle at the bases of the caudal rays. There 

 are groups of brown pmicticulations on the caudal pedicel in front of the 

 red streaks. Fins light, with a little more of brownish toward their bases. 



Total length thirteen sixteenths of an inch. 



Taken in the townet off the Cocos Islands. 



TRACIIYPTERID.E — POMACENTRIO.E. 



Neitlier Trachypterida^, Lophotida^, Fistulariida;, Centriscidfe nor Poma- 

 centridae, of various groups not introduced here, are to be found in the 

 material on which this report is made. The genera Trachypterus, Stylo- 

 phorus, Regalecus, and Lophotes as noted in the " Challenger " report by 

 Giinther are given depths of three hundred to five hundred fathoms without 

 definite depths for particular species. Vaillant reports Macrorhamphosm 

 scohpax Linn., taken off the northwestern coast of Africa, from a hundred 

 and twenty-eight fathoms, and a species of Aulostoma, obtained off the 

 coasts of Morocco, from a depth of six hundred and thirty-five. Heliastes 

 roseiw Glint, secured in the neighborhood of the Ki Islands, is credited 

 with a depth of a liundred and forty fathoms. 



