1885] PROCEEDINGS OF UNITED STATES NATIONAL MUSEUM. 55 



" Habitat ad Caroliuaui, volitauti statura simillimus, at vix digito 

 lougior, ueque argenteus. Garden. 



" PiuiiiB pallid;e, fascia una alterave nigricante, ventrales, qua; in vo- 

 litante ne auum quidem attingunt, apice pinnam caudae attingentes, ^ 

 a Cauda remotfe, ceterum, uti in volitante, inter caput et anuni niedi.'B^ 

 radio primo brevi, pectorales radio primo et secundo brevibus ; cauda- 

 lis lobus inferior longior," 



The specimen examined by us agrees very closely with the descrip- 

 tion and figure of lamelli/er given by Kner and Steindachner. It agrees 

 also with Llitken's account of the same species. 



The fasciatus of Le Sueur seems to be, in all probability, the same tish. 

 The figure is very poor, and the description meager, but apparently one 

 of the species with long anal is indicated, probably exiUens rather than 

 rolador, especially as the first and second pectoral rays are figured as 

 nearly equal in length. 



All the known specimens of exiliens are young fishes, and it is barely 

 l)ossible that E. rondeleti is the adult of the same species. The differ- 

 ences in the length of the second ray of the pectoral and in the height 

 of the dorsal seem, however, hardly likely to be due simply to differ- 

 ences of age. The JExocoetus exiliens of Cuvier «& Valenciennes is inde- 

 terminable from the description. It may be the young of U. exiliensy 

 rondeleti or vincigverrce. Uxocoetus nigripinnis and E. hrachycephalu» 

 Giinther seem to be closely allied to E. exiliens and E. rondeleti. 



5. Exocoetus rondeleti. 



Mugil alatita, Rondolet, De Piscibus, ix, 207, 1554. 



Exocoetus rondeleti, Cuv. & Val., xix, 115, 1846 (Naples, Sicily, Cauaries); Giin- 

 ther, 1866, 293 (copied); Steiudachuer, Iclithyol. Bericlit., 1868,69 

 (east coast of Spaiu, Sicily, Triest) ; Viuciguerra, Eisiiltati Ittiologioi 

 del Violante, 1883, 110 (Malta, Toulou, Tripoli, Lipari, Naples, Ge- 

 noa, Nice). 

 ? Exocatus hrachycejjhaluSjGuutljeT, vi, 1866, 297. (China.; 

 Exocwtus hradiyccphalus (in part ?), Liitken, Vidensk. Meddel. Naturli. Foreu. 



1876, 110, 405 (Atlantic, Nice, Acapulco, &c.). 

 ? Exocatus exiliens, Goode, Bnll. U. S. Nat. Mus., v, 64, 1875 (Bermudas) ; Jor- 

 dan «fe Gilbert, Syn. Fish. N. A., 1883, 380 (copied). 

 Exoccctus rolador, .Jordan, Proc. U. S. Nat. Mus., 1864, 34. (Pensacola. ) 



Habitat. — Tropical seas, north to Florida and France. 



Our specimens agree very closely with Giinther's description of E. 

 brachycephalus. His species seems, however, to be slenderer than our» 

 (depth 6i in length), the head shorter (5), and the dorsal much higher 

 (its longest rays more than half head). The specimens noticed by Liit- 

 ken as E. brachycephalus from the Atlantic seem to be the youngof this 

 species. The largest of our specimens have (as is stated in the original 

 description of E. volador) the first ray of the pectoral about half the 

 length of the fin, the second ray two-thirds. A younger specimen {7 

 inches) has the first ray of the pectoral about one-third the length of 

 the longest, one-half the length of the second. Liitken finds the firi>t 



