1886.] PROCEEDINGS OF UNITED STATES NATIONAL MUSEUM. 345 



slender, more than twice as long as rest of head; 

 teeth rather weak ; preopercle with two cross- 

 folds of skin ; caudal peduncle with a strong, black 

 keel; caudal fin moderately forked, the lower lobe 

 much the longer; dorsal inserted a little behind 

 anal ; ventrals midway between base of caudal 

 and middle of eye ; skull narrow. D. 1,24; A. 1, 

 22. Scales small, green, about 210 before dorsal. 

 Bluish white below, a faint bluish band along 



sides ; tins bluish Caribb^us, 19. 



aa. Body very strongly compressed, its greatest breadth not half its greatest depth 



(Athlennes) ; caudal peduncle not compressed, with- 

 out keel; jaws long and very slender, the upper 

 strongly arched upward at base, so that the mouth 

 cannot be closed ; snout twice length of rest of 

 head ; eye large, 2^ in postorbital part of head; 

 maxillary entirely concealed by preorbital ; a fold 

 of skin across preopercle ; opercle smooth ; inser- 

 tion of ventrals well forward, midway between 

 front of arch of upper jaw and base of caudal; 

 caudal deeply forked : dorsal and anal falcate, the 

 latter beginning farther forward ; pectorals long, 

 falcate ; scales minute : species of large size with 

 scales (and bones) green; no lateral baud; sides 

 silvery, with round, dark-blotches in youth ; fins 

 with black Tips. D. 1, 25; A. 1, 26. Lat. 1. about 



520 HiANS, 20. 



2. Tylosurus notatus. 



Belone notata Poey, Memorias, ii, 293, 1860 (Havana); Giinther, vi, 1866,248 

 (Jamaica); Poey, Synopsis Pise. Cubens., 1868, :382; Poey, Enumeratio 

 Pise. Cubens., 1675, 120 ; Goode, Proc. U. S. Nat. Mus., 1879, 151 (Pen- 

 sacola). 

 Tylosurus notatus Jordan & Gilbert, Syn. Fish. N. A., 1883, 373 (copied) ; Jor- 

 dan, Proc. U. S. Nat. Mus., 1884, 111 (Key West) ; Bean &• Dresel, Proc. 

 U. S. Nat. Mus., 1884, 168 (Jamaica) ; Jordan, Cat. Fish N. A., 59 ; Jordan, 

 Proc. U. S. Nat. Mus., 1886, 33 (Havana). 



Habitat. — West Indian fauna, north to Peusacola. 



Head, 2^; depth, 5 in head. D. I., 13. A. 1, 13. Length (418, Key 

 West), 16 inches. 



Body robust, uot at all compressed, scarcely deeper than broad, ex- 

 cept at base of caudal; the breadth of body between pectorals G in 

 head; no keel on caudal peduncle, the lateral line not black and not 

 more conspicuous on the tail than elsewhere. 



Jaws slender, rather long, the upper jaw from eye contained 4 times 

 in length, and If times length of rest of head. Mouth capable of being 

 completely closed. Eye large, its diameter equal to interorbital width, 

 2\ in postorbital part of head and in snout. 



Teeth slender and pointed, those of the inner row on each side, in 

 each jaw, enlarged, about 25 of them being canine-like. Teeth and 

 bones of head not green. Maxillary entirely concealed by the preor- 

 bital. Interorbital space, with a rather broad and deep median groove, 

 which is widened and scaly anteriorly, with an inconspicuous median 



