[59] CATALOGUE OF THE FISHES OF NORTH AMERICA. 



Order V.— SYNENTOGNATHI. (Q) 

 Family LXVIII.— BELONID^.i (57 pt.) 



194.— TYLOSURUS-Cocco. (181) 



654. Tylosurus hians Cuv. & \'al. W. ((i9t)) 



655. Tylosurus fodiator^ Jordan & Gilbert. P. 



656. Tylosurus crassus-" Poey. W. (GOO &.) 



657. Tylosurus caribbasus Le Sueur. W. (59T) 



658. Tylosurus notatus Poey. W. (598) 



659. Tylosurus sagitta'' Jordau &, Gilbert. W. 



660. Tylosurus marinus Bloch «fc Schueider. N. S. (599) 



661. Tylosurus exilis Girard. C. (600) 



662. Tylosurus stolzmanni'' Steiudachner. P. 



' Aocordiug to Dr. Gill the structure of the skeleton in Belone, Tylosurus and Pota- 

 morrhaphis differs so much from that of the other Scomberesoddce that these genera 

 should be placed in a distiuct family, Belonidce. 



■ The identificatiou of our species of Tylosurus may be aided by the following key: 

 a. Body strongly compressed, somewhat band-like, about twice as deep as broad; 

 beak slender, the upper jaw strongly arched at base ; dorsal and anal 



very long, the posterior rays elevated ; D. 24 ; A. 25 Hians. 



aa. Body subcylindrical, or not greatly compressed. 



b. Dorsal and anal long, each with 20 or more rays, their posterior rays prolouged 

 in the youug, short in the adult; scales small; beak strong, with 

 large teeth ; lateral line passing into a dark-colored, keel on tail, no 

 bluish lateral band ; size large. 

 c. Beak very strong, not twice as long as rest of head ; body comparatively 

 stout ; depth about 14. 



d. Dorsal rays about 19 ; anal 17 Fodiator. 



dd. Dorsal "rays about 23. A. 23 CRASStJS. 



cc. Beak twice or more length of rest of head; body comparatively slender; 



depth about 18, D. about 25, A. about 24 CARiBB.fiUS. 



li. Dorsal and anal short, each with less than 20 rays; the last rays not prolonged; 



beak long and slender ; sides with a bluish lateral band ; size small. 



e. Caudal peduncle posteriorly compressed, the lateral line not dark and not 



forming a keel. 



/. Body very broad, robust; dorsal very short, its lobe orange-red. in life; 



maxillary hidden by preorbital. D. 13 ; A. 14 Notatus. 



ff. Body very slender, subterete ; dorsal moderate, not red ; maxillary not 



hidden by preorbital. Eye small. D. 14, A. 16 Sagitta. 



e. Caudal peduncle posteriorly depressed ; lateral line forming a slight keel 

 which is blackish in color; eye rather large; D. 15; A. 18.. Marinus. 

 ee. Caudal peduncle depressed, with a strong keel; maxillary not entirely 

 hidden. D. 15 or 16 ; A. 17. 



g. Pectorals plain olivaceous ; dorsal and anal lobe pale Exilis. 



gg. Pectorals abruptly black at tip; dorsal and anal lobes blackish 



Stolzmanni. 



'^Tylosurus fodiator Jordan &. Gilbert, Proc. U. S. Nat. Mus., 1881, 459. Mazatlan. 



■* Belone crassa Poey, Memorias Cuba, II, 1860, 291 = Tylosurus gladkis Beau, Proc. 



U. S. Xat. Mus., 1882, 430= Tylosurus crassus Jordan, Proc. U. S. Nat. Mus., 1884, 



112 (not Belone jonesi Goode). Pensacola southward. • 



'•Tylosurus sagitta Jordan & Gilbert, Proc. U. S. Nat. Mus., 1884, 25. Key West. 

 * Belone stolzmanni Steindachuer, Ichthyol. Beitriige, VII, 21, 1878 = Tylosurus 

 sierrita Jordan & Gilbert, Proc. U. S. Nat. Mus., 1881, 458. Gulf of California to 

 Peru, 



