NICHOLS & MURPHY 
LONG ISLAND SHARKS. 
an>- other shark that it could ser\e as a diagnostic character equally with 
the enormous gill-clefts, to distinguish this species from all other sharks. 
It should be noted, too, that the rostrum was not short, as it is represent- 
ed in textbook figures, but i)rojected considerably in front of the mouth. 
"The whole surface was covered with minute tul)ercles, which were 
rough to the touch when the shark was stroked from behind forward. 
The tubercles were especially large at the tij) of the ro.strum. On the 
snout, both above and below, were sen.sory pores distributed in groups. 
They were tran.sver.sely elongated and ver\' large, .some of them '4 inch in 
width. The long, slender gill-rakers, which are so di.stinctive of this 
species, were black in color, and looked like long, fineh- toothed combs 
attached to the gill bars. The longest rays were 2/8 inches in length. 
The teeth were set in the jaws in three rows, except in a few spots, where 
there were a few extra teeth giving the appearance of four rows. 
' ' The alimentary canal contained a large quantity of bright red 
material. On examination under the micro.scope, this resolved it.self into 
a vast multitude of minute Cru.stacea (species not yet determined), who.se 
reddish bodies lent color to the entire ma.ss. 
"A few measurements, especially of the head region. ma\' here ])e 
given : Rostrum, from front of e\e, lo'/; in. Diameter of e\-e, i ' j in. 
Front of eye to no.stril, 3 in. Width of no.stril. i '4 in. Di.stance between 
inner margins of nostrils, 4-^4 in. Mixopterygia, 7 '4 in." 
iS. SPINED DOCxFIvSH 
Squalus acaiit/iias Linne 
Jordan and Everniann, p. 54. 
Garnian, p. 192. 
First dor.sal fin oppo.site the .space between pectoral and ventral fin.s. Fir.st and 
.second dorsal fins each with a spine in front. No anal fin. Slate color above, pale 
below, more or less marked with whitish spots above. Lenjj^h 2 to 3 feet. 
