3G8 DEEP-SEA FISHES OP THE ATLANTIC BASIN. 



broad, scarcely elevated, with a spine on each side pointing outwards and covered by skin. 

 Operculum small, with a slender horizontal spine posteriorly, the part below the spine being 

 emarginate. Gill-membranes united below the throat by a rather narrow cutaneous bridge, 

 not attached to the isthmus. Gill-opening wide; gills 4, a slit behind the fourth; pseudo- 

 branchiae glandular. The trunk is rather low, its greatest depth being one-sixth of the total 

 (without caudal). Tail tapering into a very narrow band. The first dorsal fin commences 

 behind the vertical from the base of the pectoral, is somewhat higher than long, and not 

 higher than the second. The second dorsal commences immediately behind the first; its 

 rays increase somewhat in length posteriorly, one of the longest being half as long as the 

 head. The whole fin is naked. Caudal fin slender, slightly rounded, entirely free from 

 dorsal and anal, and nearly half as long as the head. The anal fin commences at some 

 distance behind the vent, which is situated vertically below the origin of the first dorsal; 

 it is very similar to the second dorsal. The pectoral is inserted somewhat below the middle 

 of the body, and its length equals the distance between the front margin of the eye and 

 the end of the operculum. Ventrals narrow, slender, with the outer ray produced into a 

 filament shorter than the pectoral. 



The scales extend over the whole head, the chin and the thin lips being naked. (Giinther.) 

 This form, originally described from Nice, has since been found at Madeira by John- 

 son, and at Naples and Catania by Giglioli. 



The Blalce obtained a poor specimen, apparently of this form, at station LXXXi, oil" the 

 Island of Nevis, in the West Indies. 



LOTELLA, Kaup. 



Lotella, Kaup, in Wiegm. Arch., 1858, p. 88. — Gi ntiif.r, Cat. Fish. Brit. Mus., iv, 316; Challenger Report, 

 xxn, 1887, 80, pi. xiv, fig. A. (Lotella marginata.) 



Body of moderate length, covered with small scales. A separate caudal; 2 dorsal fins 

 and 1 anal; ventral fins with a flat base and composed id' several rays. Teeth in the upper 

 jaw in a band, with an outer series of larger ones. Vomerine or palatine teeth, none. Chiu 

 with a barbel. Branchiostegals 7 (<»?). (GUnthcr.) 



Five species of this genus are known: L. j>hycis (Schlegel), Giinther, from Japan; L. 

 rhachinus (Forster) Giinther, from Queen Charlottes Sound; 1j. fuliginosa, described by 

 Giinther from a specimen without locality in the British Museum; L. mawillaris, Bean, 

 doubtfully referred tu this genus, and L. marginata, Giinther, from 140-345 fathoms, off 

 the Pacific Coast of southwestern South America. 



LOTELLA MAXILLARIS, Bean. (Figure 321.) 



Lotella maxillaris, Bean, Proc. U. S. Nat. Mus., vn, 1889, 241. — Ginther, Challenger Report, xxn, 1887, 86. 

 — Jordan, Cat. Fish. N. America, 1885, 130. 



A Lotella having the length of its moderately compressed head contained about 4£ times 

 in the total length without caudal; the height of the body 5 times. Snout short. The eye 

 is one third as long as the head. The maxilla reaches to the vertical through the anterior 

 margin of the pupil; its length equals that of the postorbital part of the head. The teeth 

 are in narrow bands in the jaws, the outer series being enlarged. The vomer and palate 

 seem to be without teeth. The vent is situated about under the eighth ray of the second 

 dorsal. The distance of the first dorsal from the tip of the snout is contained 4 times in the 

 total length, including caudal. The ventrals extend to about the vertical from the origin 

 of the second dorsal, and do not reach nearly to the vent. The longest ray of the first 

 dorsal is a little more than one-half as long as the head. None of the rays of the second or 

 of the anal are as long as the first ray of the first dorsal. The longest ray of the second 

 dorsal does not much exceed one half the height of the body. The longest ray of the anal 

 is about one-half the length of the ventral. The origin of the anal is about under the tenth 

 ray of the second dorsal. The ventrals are situated about under the beginning of the pos- 

 terior third of the head; their length equals one-fourth of the length of the second dorsal 

 base. The origin of the pectoral is somewhat in advance of that of the first dorsal. The 



