480 DEEP-SEA FISHES OF THE ATLANTIC BASIN. 



similarly grotesquely shaped fish under the name of Gfymnetrus Miilh linniis (Wiegmann's 

 Archiv, 1840, 13), and Moreau, in his Fishes of Fiance (p. 567), devotes three pages to an 

 argument for the specific distinctness of T. cristatus. 



TRACHYPTERUS REPANDUS, (Metaxa), Costa. 



" Gymnetrus repandus, Metaxa." 



Trachypterus repandus, Costa, Fauna. Napolitana, Pi iscr, pi. ix. 



A Trachypterus with the greatest height of the body contained about 3i times in its 

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

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

 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 about as long 

 as the fish, and the first ray at its extremity becomes divided into -1 membranous filaments. 



Radial formula: D. S+152; A. none; 1". 10; V. 7; 0. Id. 



( !olor: The entire body is silvery, with numerous bluish-black dots, which, being placed 

 more closely together in the region of the back, form interrupted transverse hands; 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 tins are 

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

 the same color, except tin- upper and lower margins, which are somewhat clouded. 



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

 Adriatic A figure of it is given in Gunther's article "Ichthyology" in the Cyclopaedia 

 Britannica, and also in the Study of Fishes (p. ~>'2\). It is undoubtedly a young of some, 

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

 under the name T.filicauda 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 erest is very long, but lacks the membranous expansion noted in T. repandus. 

 The ventrals are also very long. 



Family REGALEClDvE. 



I Ginnetridi, Raflnesque, Indice d'lttiologia Siciliana, 1810, 31. 



Gymnetridce, SwainSON, Nat. Hist. Fishes, 1839, n, 47,49. 



Eegalecidce, Gill, Standard Nat. Hist,, in is:;:,; American Naturalist, \\i, 1887, 86; wiv, 1890, 482. 



TVcniosoiues with the body very elongated anil compressed, the head oblong, the 

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

 obliquely behind 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, the supraoc- 

 cipital 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, BrLinnich. 



Begaleeus, Brunnich, Nya Sammlung, in, 1788, 11 l.-C< ntuer, Cat, Fish. Brit, Mas., m, 307; Challenger 



Report, xxn, 73. 

 Gymnetrus, Schneider, Bloch Syst. Ichth., 1801, 4*7. — Ccvtjer and Valenciennes, Hist. Nat. Poiss, x, 352. 



Body very elongate, compressed. Head oblong. Teeth absent. Ventrals each a pro- 

 longed filament, sometimes with a dilated tip. Caudal rudimentary (not so in h'. Russelii, 

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



REGALECUS GLESNE, ASCANIUS. (Figure 395.) 



Spada marina, Imperato. 



Ophidium glesne, AscANius,Nya Saraml. Vid. Selsk. Skr. in, 419. 



liegalecus glesne, Ascanius, Bones Rerum Natuialiuin. 1806, pi. xi. — Lacepede, up. <it., n, 214. — Gray, Proc. 



Zool. Sue, 1849, 81.— Gunther, Cat. Fish. Brit. Mas., in, 310. 

 Gymnetrus glesne, Cuvier and Valenciennes, op, cit., x, 306. 



