GOEGOXOCEPHALCS. 137 



at tip ; one of the arm-spines very much longer than the rest, and 

 almost as long as the arm is wide. Skin hoth of disk and arms 

 without any hard deposit ; no tentacle-scale ; about six mouth- 

 papilloe. 



Colour, in spirit, creamy white. 



Sometimes found clasping the axes of living specimens of Funicu- 

 lina quadrangularis. Arms not naturally extended, but when so 

 drawn out may give a spread of 800 mm. 



R. r. 



380 (ca.) 15 



360 (ca.) 20 



175 (ca.) 10 



125 (ca.) 8 



Distribution. Circumpolar : North Sea, eastern side of North 

 Atlantic, Japan. To 350 fins. 



a. The Minck. « Porcupine ' Exp. 



b. Loch Torridon. J. A. Stewart, Esq. 

 c-g. Loch Hourn, 70 fms., 29/8/87. John Murray, Esq. 



h. Firth of Lorn. John Murray, Esq. 



i,j. Firth of Lorn (embracing Funiculina quad- John Murray, Esq. 



rangularis). 



k, I. Aberdeen. Geo. Sim, Esq. 



GORGOXOCEPHALIISLE {see p. 27). 



G0RG0NGCEPHALUS. 



Gorgonocephalus (pars), Leach, Zool. Misc. ii. (1815) p. 51 ; (sens. 



emend.) Lyman, Chall. Rep. Qph. (1882) p. 258. 

 Euryale (pars), Lamk. An. s. Vert. ii. (1810) p. 535; Ay. Mem. Soc. 



Neuch. ii. (1839), Notice, §c. p. 1. 

 Astrophvton (pars), Forbes, Brit. Star/. (1840) p. 67 ; M. Tr. Syst. 



Ast. (1842) p. 121 ; Lyman, III. Cat. Mm. C. Z. i. (1865) p. 180; 



Norm. Ann. 4'" Mag. xv. (1865) p. 105. 



Disk rounded or with slight re-entering curves, thick ; arms 

 narrow at the base and not dividing so frequently as in Astrophyton. 

 Radial shields elongated, diverge considerably. Upper arm-plates 

 represented by a mosaic of thin irregular plates. 



Key to the Species. 



Dorsal surface of disk spiny 1. G. lincki. 



Dorsal surface of disk not spiny 2. G. eucnemis. 



1. Gorgonocephalus lincki. 



? Astrophyton arborescens, Penn. Brit. Zool. iv. (1777) p. 56 (non 



M. Tr.). 

 ? Asterias caput-meduspe, Turt. Brit. Faun. (1801) p. 140. 

 ? Astrophyton scutatum, Flem. Brit. An. (1827) p. 489; Couch, Corn. 



Faun. i. (1838) p. 84. 



