DISCUSSION OF SPECIES A\D THEIK I>I>T!;ilil'TION. 



225 



ridges; 7 bucklers along the base of the dorsal, the fifth and sixth largest; 2 on the median 

 line in front of the ventrals, the second largest; one median plate, and •> pairs between 

 ventrals and anal, and 4 along the base of the anal. Top of the head with roughish 

 ridges, but without spines; a spine at the base of each dentaiy bone; the broad mamillaries 

 each with a supplemental bone; teeth nearly obsolete. Eye large, limeh nearer the gill 

 opening than the tip of the snout. (I ill rakers short. Caudal peduncle very slender, the 

 caudal tin short and rounded; pectorals very short; ventrals large, the rays I, 6, the first 

 soft ray closely appressed to the spine; anal spines short and stout, the soft rays, like 

 those of the dorsal, low; dorsal spines filamentous. D. IX, 26; A. Ill, 24. Pelagic; one 

 specimen taken at Provincetown, Mass. (Description from the original type,by Jordan.) 



ZENOPSIS OCELLATUS. 



Zeno})sis conch if o\ (Lowe), is closely allied to this species and is a pelagic form, 

 evidence has as yet been found of its occurrence below the surface. 



No 



CYTTUS, Gunther. 

 Cyttus, GUNTHER, Cat. Fish. Brit. Mus., n, 1860, p. 396. 



Body compressed and elevated, covered with very small scales; mouth protractile. 

 Two contiguous dorsal fins, the first with eight or nine spines, the anal with two short 

 spines. No bony plates along the base of the dorsal and anal fins. Ventral fins composed 

 of oue spine and six or eight soft rays. Minute teeth in the jaws aud on the vomer, none 

 on the palatine bones. Branchiostegals, eight. 



The type is Cyttus australis (Capros australis, Kichardson), from Australian seas. C. 

 abbreviates, Hector (Gunther, Challenger Report, xxn, p. 22, PI. x, fig. B), was obtained 

 in 400 fathoms some 200 miles off Cape Farewell, New Zealand. ('. hololepis, described 

 below, was obtained in 220 fathoms. It is fair to assume then, since two out of three 

 of the known species are found in deep waters, that G. australis also descends to the 

 depths. 



CYTTUS HOLOLEPIS, Goodf, and Bean, n. s. (Figures 233, 233a, 2336.) 



The greatest depth of the body, which is at the ventral origin, is two-fifths of the total 

 without caudal. The length of the head is three-eighths of the standard length. The eye 

 is very large, equal to two ninths of the length without caudal, and more than one-half the 

 length of the head. The width of the interorbital space, 9 millimeters, is two-fifths of the 

 length of the bead. The intermaxillary is protractile and when drawn out a deep horseshoc- 

 19868— No. 2 15 



