some new SliarJcs. I'M 



from spine of first dorsal, with vouiided j)ostc'rior aii<^le. 

 Vctitrals not rciichiii^^' the vertical tVc^m posterior end of 

 second dorsal. 



Ifdh. Magellan. 



A single specimen (?) of G40 mm., presented by Capt. 

 Wharton, R.N. 



Ceiiti\ )sc>/m n us cn/ptacanth un. 



Centrnphorus ccchlcpis (non Bocage & Capello), Giiuth. Cat. Fish. viii. 



]-.. 4l';} (1870). 

 Centrosn/mmts ccclolepis, GooiIr & Bean, Oceanic Ichtlivol. p. 14, pl.i%-. 



tig. 13 (189G). 



Dtrmal denticles imbricated, those on the head and on the 

 upper and lower parts of the body to the level of the first 

 dorsal fin each with 3 parallel keels ending posteriorly in a 

 point, the others smooth, with rounded free edges and with a 

 rounded depression on the free surface of each. Distance 

 from mouth to end of snout greater than that from eye to 

 first gill-opening; nostrils oblique ; length of anterior labial 

 fold about equal to its distance from the symphysis. Ante- 

 rior dorsal fin shorter than the second, the length of its base 

 (without the spine) about ^ its height and ^ of its distance 

 from the second ; length of base of second dorsal (without 

 the spine) ^ its distance from the caudal ; spines very short, 

 hidden beneath the skin. Pectoral not extending to the 

 vertical from origin of first dorsal, with rounded posterior 

 angle ; ventrals extending to the vertical from the posterior 

 end of second dorsal. 



Ildb. Madeira. 



A single specimen ((J) of 700 mm., presented by J. Y. 

 Johnson, Esq. 



The relations of the two species of Centroscymuus above 

 described are shown in the following synopsis of the species 

 of the genus : — 



I. Anterior labial gr'>ove.=? moderate, ^aoh. 



about as long as its distance from the 

 middle of the upper jaw ; nostrils 

 oblique. 

 Dorsal spines well developed and strongly 



projecting 1. macracanthiis. sp. n. 



Dorsal spines short, slightly projecting . . 2. cojlulepis, Boc. & Capell. 

 Dorsal spines not projecting, hidden be- 

 neath the skin 3. cryptacanthus, sp. n. 



II. Anterior labial grooves long, each about 



twice as long as its distance from the 

 middle of the upper jaw ; nostrils slightly 

 oblique, almost transverse 4. obsairm, Vaill. 



