1«86.] PROCEEDINGS OF UNITED STATES NATIONAL MUSEUM. 



357 



this will uot preveDt us from seeing in tkese a single identical species, 

 all the characters of iuii)ortance being always alike. 



''The museum of Palermo has of this Tylosurus three large prepared 

 skins, two skeletons, and one young specimen in alcohol. For better 

 comparison I give here the measurements of all these : 



Length f lom tip of snout to front of dorsal . . 

 Lenjith from tip of snout to origin of ventral 

 Length from tip of snout to origin of pectoral 



Length from tip of snout to front of eye 



Distance from front of eye to gill opening . _ . 



Length of head .". T 



Depth at pectoral 



Dorsal rays 



Anal rays 



Pectoral rays 



Ventral rays 



§2 



S - 



?3 



ga 



M.0.90 

 .70 

 .31 

 .20 

 .11 

 .315 

 .059 

 25 

 23 

 13 

 1,5 



M.0.70 

 .53 

 .26 

 .17 

 .08 

 .253 

 .059 

 24 

 22 

 13 

 L5 



a hi 



M 



m 





M.0.69 M. 0.695 



.53 

 .26 



.17 I 



.08 



.26 I 



.06 : 

 24 

 •>2 I 

 13 1 



L5 ! 



.54 



.264 



.17 



.085 



.265 



25 



23 



13 



L5 



.526 



.26 



.17 



.684 



.264 



s'SS 



M. 0.295 

 .226 

 .115 

 -.08 

 .034 

 .116 



23 



13 

 L5 



19. Tylosuius caribbaeus. 



Belone caribbcBa Ijti Sueur, Jour. Acad. Nat. Sci. Pliila., ii, 1821, 127 (Caribbean 

 Sea); Cnvier & Valenciennes, xviii, 1846, 430 (Martinique; St. Bartholo- 

 mew ) . 



Belone altipinna, Pocy, Memorias, 293, 1861 (Cuba); Poey, Syn., 381, 1868; 

 Poey, Enuiiieratio, 120, 187.S. 



Habitat. — West Indian Fauna ; Cuba. 



We know this species only from the specimens from Martinique in 

 the museum at Paris, described by Valenciennes. It is very close to 

 T. acus, and may be the same, but the upper jaw is somewhat arched 

 at base and the eye is very large (2-^0 in postorbital part of head). 

 Pory's B. altipinna is doubtless identical with these specimens, and the 

 original caribhwa of Le Sueur is presumably the same. 



20. Tylosurus hiaiis. 



Belone hians Cuvier & Valenciennes, xviii, 432, 1846 (Havana, Babia) ; Gtiu- 

 ther, vi,]86G, 248 (West Indies, Bahia) ; Steindachuer, Ichtb. Beitr., iii, 

 64, 1875 (Acapulco) ; Goode, Proc. U. S. Nat. Mus., 1879 (Florida). 



Tylosurus hians Jordan & Gilbert, Synopsis, 1883, 373, 901 ; Jordan, Proc. U. 

 S. Nat. Mus., 1885, 370; Jordan, 1. c. (Havana) ; Jordan, Cat. Fish. N. A., 

 1885, 59. 



Belone maculufa Poey, Memorias, ii, 290, 1861 (Havana); Cope, Trans. Am. 

 Pbilos. Soc, 1871, 481 (St. Kitis). 



Habitat. — West Indies ranging to Brazil, and occasionally northward. 

 Also recorded from the Pacific coast at Acapulco. 



Head, 4; depth at pectoral in head, 4; breadth, 9 in head; depth, a 

 little more than postorbital part of head ; breadth, 2 in same. D. 1,25; 

 A. 1,26; lat. 1. about 520; 430 scales before dorsal. Length, 956 I. U. 

 from Havana, 32 inches. 



Body strongly compressed, deepest above ventrals, where it is more 



