Fishes of the Western North Atlantic 517 



Description. Proportional dimensions in per cent of total length. Specimen, 2,990 

 mm. (mounted, Amer. Mus. Nat. Hist., New York). 



Figure ioo. Somniosus microcefhdus. Side view of a female from a mounted specimen 1,740 mm. long 

 (Harv. Mus. Comp. Zool.), from photographs of a fresh ii-foot specimen and from other available in- 

 formation. A Upper and lower teeth from right-hand side, at center of mouth, from midway along the 

 jaws and from the corner of the mouth of a specimen about 1 1 feet long from the Gulf of Maine (Harv. 

 Mus. Comp. Zool., No. 361 19), about 1.8 x. B Front and side views of second upper tooth, about 3.5 x. 

 C Eleventh upper tooth, about 3.5 x. 



Figure ioi. Somniosus microcefhalus. A Anterior part of head from below, obtained from available informa- 

 tion. B Dermal denticles from a mounted specimen, 1,740 mm. long (Harv. Mus. Comp. Zool.), about 1 5 x. 



