86 ASTEKOIDEA. 



Cribella rosea, Forbes, Brit. Star/. (1840) p. 106 ; Thompson, Faun. 



Irel. iv. (1856) p. 439; MaitlanA, Anim. Behj. sept. (1851) p. 90. 

 Asteracanthion roseus, Dub. <§■ Kor. Vet.-Ak. Hdlg. 1844 (1846), 



p. 241 ; Perr. Ann. Sci. Nat. xii. (1869) p. 229, pi. xvii. fig. 7. 

 Henricia rosea, Gray, Brit. Bad. (1848) p. 20. 

 Asteracanthion roseus (pais), M. Tr. Syst. Ast. (1842) p. 17. 

 Stichaster roseus, Sara, Norg. Ech. (1861) p. 86 ; Norm. Ann. fy 



Mag. xv. (1865) p. 125 ; Hodge, Tr. Nat. Hist. Soc. North. <§• 



Durh.iv. (1872) p. 136; Perr. Arch. Zool. exper. iv. (1875) p. 347 ; 



Dan. # Kor. Norsk. Nordh. Ast. (1885) p. 30. 



11 = 7 r. 



Hays long, tapering gradually, rather sharply marked off from 

 the disk, blunt at tip, with a prominent terminal plate. Ambulacral 

 groove pretty wide, with a double or triple row of blunt, closely 

 packed, rather irregularly disposed spines, beyond which are two or 

 three rows of smaller, almost tubercle-like spines. The ossicles of 

 both surfaces are arranged in very regular rows, among which 

 that which extends along the middle line of the back is conspicuous. 

 The ossicles are irregularly oval in form and the tubercles with 

 which they are closely covered are squarish and flat-headed ; there 

 are seven or eight rows on either side the middle line, and the 

 ossicles in those at the side of and on the ventral surface of each 

 arm are larger than those on the dorsal surface. The definiteness 

 of the arrangement of the rows of ossicles is less marked and the 

 tuberculation does not form so close a pavement in specimens from 

 55 or 200 fathoms ; in the Croulin specimen the tubercles are 

 almost spines. The papular spaces are distinct but never large. 

 The disk is small, the madreporite on its side is prominent and 

 surrounded by a circlet of flat tubercles. 



Colour in life, orange or reddish ; dried or in spirit, pale yellow. 



R. 

 112 

 92 



Distribution. Coasts of Norway, Holland, British Isles. To 

 200 fms. 



a. Croulin Id., Skye, 30 fms. E. M' Andrew, Esq. 



b. Ayrshire. Prof. E. Forbes. 

 e. Kilbrennan Sound, 10-20 fuis. J. Murray, Esq. 

 d. 30 miles off Achill Head, 144 fms. It. Irish Acad. 



e, f. S.W. coast of Ireland, 55 fms. 



g. 50° 50' 15" N., 11° 12' 30" W., 200 fms. G. C. Bourne, Esq. 



h. S.W. Ireland. Dr. Grenfell. 



i. Port Erin, I. of Man, Easter 1889. 



j. Plymouth. 



A\ Aberdeen. G. Sim, Esq. 



Z-». ? ' Porcupine ' Exp. 



