12 PROCEEDINGS OF THE ACADEMY OF [Jan., 



about opposite dorsal origin, similar to dorsal. Caudal well 

 forked, lobes pointed and lower apparently much longer (dam- 

 aged) and about long as head. Pectoral long, reaches back to 

 last dorsal ray base, its first and second uppermost rays simple. 

 Ventral inserted slightly nearer head than caudal base, reaches 

 back not quite so far as pectoral or about | to caudal base, with 

 median branched ray longest. Vent close before anal. 



Color in alcohol pale brown on back, sides and below silvery- 

 whitish. Dorsal and caudal pale, medially tinged with brown. 

 Pectoral deep brownish over greater median portion, blackish 

 inside, though extreme inner edge and whole outer edge whitish. 

 Anal whitish, also ventral, though latter with quite large median 

 lengthwise brownish area. Iris whitish and muzzle pale. 



Length 175 mm. 



Type, No. 7,493, A. N. S. P. Atlantic Ocean. C. L. Bona- 

 parte (No. 346). 



Only the above described example known, which differs from 

 Cypselurus rondeleti in the shorter pectoral and more numerous 

 gill-rakers. My examples of C. rondeleti show the pectoral reach- 

 ing the caudal base and the gill-rakers 7 + 15, though the larger 

 248 mm. long. 



(■KoXijq, many; tqQ/^os, strainer, or gill-raker, as here understood.) 



Cypselurus vinciguerrse (Jordan and Meek) . 

 Adult from Gulf of Mexico. 



Cypselurus hyperistius new species. Fig. 4. 



Head 4^; depth 6; D. ii, 9; A. ii, 9; P. i, 17; V. i, 5; scales 50 

 counted from shoulder to caudal base medially and 4 more on 

 latter; 31 predorsal scales to head; 7 scales above 1. 1. to dorsal 

 origin; snout 4 in head, measured from upper jaw tip; eye 3; maxil- 

 lary 3f; interorbital 2j; least depth of caudal peduncle 3|. 



Body elongate, robust forward where also constricted below 

 and upper surface broadened, though posterior regions well com- 

 pressed. Caudal peduncle well compressed, least depth about 

 If its length. 



Head broadly depressed above, flattened sides narrowly con- 

 stricted below, width 1^ its length, and front profiles about evenly 

 inclined. Snout moderately broad, conic, length about f its 

 width. Eye very large, high, greatly impinging on upper profile, 

 and hind pupil edge slightly advanced from center in head length. 



