NO. 1S77. NEW PHILIPPINE SQUALOID SHARKS— SMITH. 681 



entirely behind ventrals, rather high, the posterior rays much pro- 

 duced, the spine very strong and about height of fin; space between 

 dorsal fins seven times length of base of first dorsal without spine; 

 caudal fin short and broad, the lower lobe .6 total length; distance 

 from base of second dorsal to upper caudal lobe .5 distance from 

 first dorsal spine to posterior base of second dorsal and .66 length 

 of peduncle; pectorals short, broad, their length less than .5 head 

 and their tip barely reaching vertical from first dorsal spine; origin 

 of ventrals about midway from first dorsal spine to middle of base 

 of second dorsal. 



Color: Above light brown, below darker; all fins pale yellowish 

 brown. 



Type. — Cat. No. 70257, U.S.N.M., a fully developed male specimen 

 22.7 cm. long, taken with a beam trawl on September 17, 1909, at 

 station 5550 (lat. 6° 02' 00" N.; long. 120° 44' 40" E.), off Jolo 

 Light, island of Jolo, at a depth of 263 fathoms, on a bottom of sand, 

 globigerinse, and foraminifera. 



The claspers are short and provided with 4 long, sharp spines. 

 In order to accommodate those organs, the fins cross one another 

 at right angles. 



This species is most closely related to E. lucifer Jordan and Snyder, 

 differing therefrom in the broader head; shorter, more obtuse snout; 

 wider mouth; and shorter, broader caudal fin. 



NASISQUALUS Smith and Radcliffe, new genus. 



Squaloid sharks having a strongly compressed body; broad, de- 

 pressed head; a broad, flat, elongate snout, with a conspicuous 

 lateral angle and rounded tip; a well-marked median cartilaginous 

 keel on upper and lower surfaces of snout; a wide, slightly curved 

 mouth, with a straight oblique fold at each angle; unicuspid teeth 

 in both jaws, those in upper jaw triangular, those in lower jaw very 

 strongly deflected laterally, the cutting edge nearly horizontal; 

 large subequal dorsal fins with a conspicuous exposed spine; a 

 postanal median keel; and dense squamation, each denticle con- 

 sisting of three slender spines on a short base. 



Genotype. — Nasisqualus profundorum. 



NASISQUALUS PROFUNDORUM Smith and Radcliffe, new species. 

 Plate 53. 



Form elongate, body and caudal peduncle greatly compressed, tail 

 bent slightly upward; head long, broad, flat, its length (to posterior 

 gill slit) contained 3.75 times in total length; greatest mdth (at 

 spiracles) .5 length, depth .6 width; body rather deep, back ele- 

 vated, depth under first dorsal spine contained seven times in total 

 length, thickness of body less than diameter of eye; caudal peduncle 



