4S0 DEEP-SKA FISHES OF THE ATLANTIC BASIN. 



siiuilaily grotesquely .sliaped HsL uiuler (lie uaine ol' (li/miutrus Alulleriainis {'\yiegmixiin''s 

 Arehiv, 1S40, 13), aiitl Moreau, iu his Fishes of France (p. 567), devotes three pages to an 

 argiiineiit for the si)ecific distinctness of T. crisfatiis. 



TRACIIVl'I'I'.lMIS UEPANDUS, (Metaxa), Costa. 



" Giimiiclriis rcjtaiidus, MicTAXA." 



Trach!i))ltrits rcpainlus, Costa, Fauiiii N;ii>(>litaua, IV-sci, pi. ix. 



A Tntrhyptenis witli the greatest lieight of tlic body contained about 3i times in its 

 total length (without caudal). The belly is sharp and rough, tlie cauihil peduncle very 

 slender. The anterior dorsal is composed of 8 rays, the length of which is more than lA 

 times the distance between the tip of the snout and the margin of the caudal; these rays 

 have here and there upon them membranous expansions. The ventrals are alxiut as long 

 as the tish, and the hrst ray at its extremity becomes divided into i mend)ranous tilameuts. 



Radial formula: D. 8+152; A. none; P. 10; V. 7; C. 10. 



Color: The entire l)ody is silveiy, with numerous bluish-black dots, which, Iteing |)]aced 

 more closely together in the region of the back, form interrupted transverse bands; these 

 in the caudal region completely surround the body. There are certain reddish spots which 

 mingle with the blue ones, giving a rosy tint to the spots upon the back. The fins are 

 rosy; only the membranous expansions of the anterior dorsal are black. The caudal is of 

 the same color, exceiit the upper and lower margins, which are somewhat clouded. 



This form has been taken at Civita Vecchia and Naples, and has been seen also in the 

 Adriatic. A figure of it is given in Giinther's article " Ichthyology" in the Cyclopsedia 

 Britannica, and also in the Study of Fishes (p. 521). It is undoubtedly a young of some 

 other form, but possibly not of T. truvhypteruii, since the small form described by Costa 

 under the name T. fillvauda has been identified by Emery with that species. T. filicauda 

 has a very long filament at the tip of the next to the last caudal ray, counting from above. 

 Its dorsal crest is very long, but lacks the membranous expansion noted in T. rcpaitdas. 

 The ventrals arc also very long. 



Family REGALECID.^. 



/ Giniiclyidi, IvAFlNESQUE, lucUce d'lttiologiii Siciliana, 1810, 31. 



Gi/nnietiulw, Swainson, Nat. Hi.st. Fishes, 18.19, il, 47,49. 



Eegalecidm, Gill, Standard Nat. Hist., iii 183.'>; American Naturalist, xxi, 1887, 86; xxiv, 1890, 482. 



Tteniosoraes with the body very elongated and compressed, the head oblong, the 

 ojiercular apparatus well developed (the operculum extended backwards, the suboperculum 

 obliquely behmd it, and the interoperculum extended upwards below the two), the preor- 

 bital chain oblique and widest at the second bone, ventrals represented by single elongate 

 rays, the cranium with the myodome atrophied and the dichost suppressed, tlie supraoc- 

 cij)ital pushed forward by the extensive development of the epiotics which encroach for- 

 wards on the roof as well as back and sides of the cranium, and with short ribs. (Gill.) 



REGALECUS, Brunnich. 



UegnU'cus, BrOnnich, Nya Sammlung, iii, 1788, 414. - Gunther, Cat. Fish. Brit. Mus., iil, 307; Challenger 



Report, XXII, 73. 

 Gynmetrus, Schneider, Bloch Syst. Ichth., 1801, 487. — Cuviek and Valenciennes, Hist. Nat. Poiss, x, 352. 



TJody very elongate, conijiressed. Head oblong. Teeth absent. Ventrals eai-h a pro- 

 longed hlameut, sometimes witli a dilated tip. Caudal rudimentary (not so in R. litmnclii, 

 from Asia). No air bladder. Pyloric appendages in considerable numbers. 



REGALECUS GLESNE, Ascanius. (Figure 395.) 



Spada miir'niu, Imperato. 



Ophidium ijliKne, AsCANins, Nya Saiiiinl. Vid. Solsk. Skr. in, 419. 



llegalcctis ijlesiic, Ascanu's, Icones Keriim Natiualiiiin, lS0(i, ]il. xi. — LACEi'iiDE, <>2>. cil., ii, 214. — Gray, I'roc. 



Zool. Soe., 1819, HI.— Gi'NTllHR, Cat. Fish. Brit. Miis., in, 310. 

 Gymnctrim ijlcsue, CuviER and Valenciennes, ojj. cit., x, 3116. 



