712 Bulletin 47, United States National Museum. 



behind eye ; maxillary almost entirely concealed by preorbital. Cuba 



and Jamaica. (ei>pi>f, wide; &^, eye.) 



Tylomrus euryops, BEAN & DEESEL, Proc. U. S. Nat. Mus., 1884, 168, Jamaica. (Type, No. 



32073. Coll. Public Museum of the Institute of Jamaica.) JORDAN, Proc. U. S. Nat. Mus., 



1886, 35. 



1053. TYLOSURTJS DIPLOT^ENIA (Cope). 



Head 2f; eye 2i in postorbital part of head. D. 16; A. 17. Body sub- 

 terete ; caudal peduncle very much depressed, wider than deep, but 

 without trace of keel ; maxillary nearly concealed by preorbital : top of 

 head nearly smooth. Caudal moderately emarginate; snout nearly 

 twice length of rest of head; scales not very small, 23 rows between 

 dorsal and anal. Brownish above, silvery below, a bluish lateral stripe 

 edged below with black and yellowish. St. Martin Island, West Indies. 

 (Cope) ; not seen by us. (^TrAoof, double ; raivia, ribbon or stripe.) 

 Belone diplotsenia, COPE, Trans. Amer. Phil. Soc. Phila., 1871, 481, St. Martin Island, West 

 Indies. 



1054. TYLOSURUS MICROPS (Gunther). 



Head 3. D. 13 to 15; A. 14 or 15. Tail strongly depressed, with a 

 sharpish edge, which is posteriorly black. Body depressed, rather 

 broader than deep. Upper surface of head flat, smooth, with a narrow 

 median groove; superciliary region quite smooth; base of premaxillaries 

 depressed ; maxillary half hidden by the preorbital. Teeth of moderate 

 size, widely set; vomerine teeth none. Diameter of eye little more than 

 width of interorbital space and length of postorbital portion of head, 

 which is rather more than half length of beak. Depth of body consider- 

 ably less than length of pectoral fin, which is less than the distance of 

 the opercular margin from the orbit ; ventral fin a little nearer head than 

 caudal ; middle and hinder dorsal and anal rays subequal in length, short, 

 the last termiuating at a considerable distance from root of caudal ; origin 

 of anal somewhat in advance of that of dorsal ; caudal forked, with 

 the lobes subequal in length. Scales minute, adherent. The termination 

 of the lateral keel on the caudal fin black. Coast of Guiana. (Gunther.) 

 (fitKpbs, small; tty, eye.) 



Belone microps, GUNTHER, Cat., vi, 237, 1866, Surinam, British Guiana. (Coll. Sir R. Schom- 

 burgk.) 



1055. TYLOSURUS ANGUSTICEPS (Gunther.) 



Head 2f-. D. 16; A. 19. Tail strongly depressed, with a sharpish lateral 

 edge; body subcylindrical. Head narrow, elongate, rather convex above, 

 with a deep, median longitudinal groove. Base of the intermaxillaries 

 depressed ; teeth very small ; maxillary half hidden by the preorbital. 

 Eye J length of postorbital part of head, which is more than that of pec- 

 toral. Ventral somewhat nearer to head than caudal; middle and hinder 

 dorsal and anal rays subequal in length, short, the last terminating at a 

 considerable distance from root of caudal ; caudal fin somewhat emar- 

 ginate. Scales very small. Termination of the caudal keel blackish. 

 Coast of Ecuador. (Gunther.) (angustus, narrow ; -ceps, head.) 



Belone angusticeps, GI)NTHER, Cat., vi, 238, 1866, Ecuador. (Coll. Fraser.) 



