322 NEW YORK STATE MUSEUM 



160 Tylosurus acus (Lacep^de) 

 Eoundfish 



Spliyraoia acns Lacepede, Hist. Nat. Poiss. V, 6, pi. 1, fig. 3, 1803, 



Martinique. 

 Belone Uitimana Poey, Memorias, II, 290, 18G1, Havana; Gunther, Cau 



Fish. Brit. Mus. VI, 249, 1866. 

 Belone jonesi Goode, Am. Jour. Sci. Arts, 295, 1877, Bermuda; Gunther^ 



Ann. Mag. Nat. Hist. Ill, 150, 1879. 

 Belone caribba'a Guntheb, Cat. Fish. Brit. Mus. VI, 241, 1866, not of 



Le Sueur. 

 Tylosurus acus Jordan & Fordice, Proe. IT. S. Nat. Mus. 355, 1886; Jordax 



& Etermann, Bull. 16, U. S. Nat. Mus. 716, 1896, pi. CXVI. fig. 309. 



190O. 



Body slightly compressed, its greatest depth one twentieth of 

 total length, its greatest width about one twenty-eighth of the 

 same; free part of tail somewhat depressed, quadrate, it& 

 depth one third of greatest hight of body; caudal carinae moder- 

 ate, black; head somewhat depressed above, striated, with a 

 broad, shallow median groove which expands posteriorly into a 

 wide, somewhat depressed triangular area, length of head con- 

 tained three and one fourth times in total length without caudal; 

 superciliary region sharply striated; snout equal to maxillary^ 

 one fifth of total length, and three times postorbital part of head; 

 mandible slightly shorter than distance from snout to nape, 10 

 times vertical diameter of eye, and projecting beyond tip of upper 

 jaw; eye equal to width of interorbital area and one eighth of 

 length of head; teeth large, sharp, not very close, maxillary teeth 

 about 60, the largest one sixth as long as the eye; mandibular 

 teeth about 60, the largest one ninth as long as the eye; no 

 vomerine teeth; dorsal origin at a distance from tip of snout 

 equal to two and one fifth times length of head, slightly behind 

 anal origin, length of dorsal base five times long diameter of 

 eye, greatest hight of dorsal fin equal to greatest width of head, 

 and contained seven and one half times in length of head, last 

 dorsal ray about one third of anterior rays; anal base terminat- 

 ing anteriorly to end of dorsal at a distance equal to length of 

 first dorsal ruy; ventral origin midway between front of orbit 

 mimI liiisi- (if middle caudal rays, length of ventrals one seventh 



