APRISTURUS BRUNNEUS. 99 



of the anterior three fifths of the anal base. Anal long, not deep, deeper an- 

 teriorly, narrowly separated from the subcaudal. Vertebral axis of the caudal 

 nearly horizontal, a slight notch between subcaudal and terminal. Scales very 

 small. 



Total length of the type (cf) 80 cm.: snout to caudal 56, snout to second 

 dorsal 51, snout to first dorsal 40, snout to ventrals 28.5, snout to pectorals 16, 

 snout to mouth 5.7, base of first dorsal 2.2, base of second dorsal 3.4, and base 

 of anal 14.4 cm. 



Blackish brown, paler below; hind edges of the fins, edges of gill openings 

 and inside of mouth black. 



Japan. 



Apristurus profundorum. 



Scylliorhinus ■profundorum Goode & Bean, 1896, Mem. M. C. Z., 22, p. 17, pi. 5, f. 16; Jord. & Everm., 

 1896, Bull. 47, U. S. nat. mus., p. 225; 1900, ibid., Atlas, pi. 3, f. 11; Regan, 1908, Ann. & mag. nat. 

 hist., ser. 8, 1, p. 460. 



Length of snout about equal to the width of the mouth, or twice the dis- 

 tance from the first gill opening to the last one. Anterior nasal valves short, 

 widely separated on the internarial space. Mouth wide; labial folds extending 

 around the angle on both jaws, lower reaching half way to the symphysis. Teeth 

 five cusped, median cusp largest. Half or more of the base of the first dorsal 

 behind the bases of the ventrals. Origin of the second dorsal above the middle 

 of the base of the anal, the end being opposed to that of the latter. Basal length 

 of the anal about twice that of the dorsal. Caudal nearly one third of the total 

 length. 



Uniform greyish brown. 



Taken in Lat. 39° 09' N., Long. 72° 03' W., at a depth of 816 fathoms. 



Apristurus brunneus. 



Catulus brunneus Gilbert, 1891, Proc. U. S. nat. mus., 14, p. 542; Jord. & Everm., 1896, Bull. 47, 



U. S. nat. mus., p. 24. 

 Scyliorhinus brunneus Regan, 1908, Ann. & mag. nat. hist., ser. 8, 1, p. 549. 



Body slightly compressed, shorter than the tail; head somewhat narrowed; 

 snout elongate, rather pointed, its length from the mouth nearly equal to the 

 width of the latter. Nostrils large, nearer to the mouth than to the end of the 

 snout. Mouth with labial folds, the lower of which is shorter than the upper 

 and extends half way to the symphysis. Teeth with three to five cusps; median 

 cusp long, sharp, strongly curved back and outward. Orbit one third of the 



