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PROCEEDINGS OF THE NATIONAL MUSEUM. 



VOL. 41. 



broad, 4.33 in total length, its width more than .5 its length; snout 

 short, obtusely pointed, .33 head; eye large, lateral, rather shorter 

 than snout and .66 interorbital space; mouth broad, very slightly 

 curved, its width less than .33 length of head and its distance from 

 end of snout equal to distance to first gill slit; nostrils small, midway 

 from tip of snout to middle of pupil; spiracles small, immediately 

 above posterior corner of eye and separated therefrom by a narrow 

 fold of skin ; skin soft to touch, the denticles small, dense, and con- 

 sisting of a long, pointed spine and two smaller lateral spines on a 

 flat base. 



First dorsal fin placed well forward, its origin midway between 

 tip of snout and second dorsal, the spine more than .5 height of fin; 



■ Fig. 1.— Squalus PHiLipprNus. Under side of head. Enlarged about ONE-FoxmiH. 



second dorsal much smaller, its origin much nearer to origin of first 

 dorsal than to tip of caudal, the spine more curved and rather stouter 

 than the other and .75 height of fin; caudal fin rather large and 

 spreading, longer than head, lower lobe broad, more than .5 total 

 length of fin; ventrals small, their origin nearer to spine of first dorsal 

 than to spine of second; pectorals broad, posterior margin slightly 

 incised, tips extending to posterior end of dorsal base. 



Color: Above dark gray, below light gray; outer part of dorsal 

 fins black, base pale; middle of caudal black, the lobes light yellowish 

 gray; a small light spot on base of pectoral immediately behind the 

 last gill opening. 



