108 OPHIUROIDEA. 
g, r. Blacksod Bay, 3-4 fms., April 24, R. Trish Acad. 
1891. 
s-v. Blacksod Bay. Dr. Grenfell. 
w. West coast of Ireland. R. Dublin Soe. 
a,y. Belfast Bay. Belfast Nat. Hist. Soc. 
z, a’. Strangford Lough. Belfast Nat. Hist. Soe. 
b'-d'. Off Liverpool. 
e’, f'. Pembrokeshire, Mrs. Fenwick. 
g'. S. Wales. Mrs. Passingham. 
h'-k'. Plymouth. 
U', m'. Weymouth Bay. 
n’, o'. Weymouth. 
p'. Hastings, April 4, 1881. S. O. Ridley, Esq. 
qu’. Dover. Mr. E. Tennent. 
v’. Firth of Forth. Prof. E. Forbes. 
w'—a'', Montrose, June 18/26, July 22, Sept. W. Duncan, Esq. 
23, 1889, 
ee 7", sBritish, H, Ball, Esq. 
2. Ophiura albida. 
Ophiura albida, Forbes, Mem. Wern. Soc. viii. (1839) p. 125, pl. iv. 
figs. 5 & 6; ed. Brit. Starf. (1840) p. 27 ; Thompson, Nat. Hist. Irel. 
iv. (1856) p.486; Luthk. Dansk. Vid. Selsk. Skrift. v. (1859) p. 39, 
pl. i. fig. 2; Norm. Ann. § Mag. xv. (1865) p. 118; Jarzynsky, 
Trans. Petersb. Soc. Nat. 1. (1870) p. 318. 
Ophioglypha albida, Zym. Ill. Cat. M. C. Z. i. (1865) p. 49; Heller, 
Zooph. u. Echin. Adriat. Meer. (1868) p. 58; Ludw. Mitth. zool. 
Stat. Neap. i. (1879) p. 547; Herdman, Proc. Phys. Soc. Ed. v. 
(1880) p. 200; Leslie et ad. op. cit. vi. (1881) p. 87; Carus, Faun. 
Med. (1884) p.95 ; Hoyle, Proc. Phys. Soc. Ed, viii. (1885) p. 148; 
Barrois, Rev. Biol. 1. (1888) p. 72; Felstrup, Zool. Dan. Pigh. 
(1890) p. 28, pl. i. fig. 1. 
Ophiolepis ciliata (pars), M. Tr. Syst. Ast. (1842) p. 91. 
Ophiolepis stenura, Lorenz, SB. Ak. Wiss. Wien, xxxix. (1860) 
p- 681. 
Allied to O. ciliaris, but distinguished by not growing so large, 
haying less numerous and more coarse disk-scales, a smaller number 
(less than twenty) comb-spines at the insertion of the arms, and no 
ventral pores owing to the union of the side arm-plates in the 
ventral middle line, and proportionately stouter arms. Mouth- 
plate pentagonal, as broad as long. Many of the upper disk-scales 
are quite large, and the radial shields therefore are by no means 
conspicuous. ‘The side-spines are short, four or five to a plate. The 
lower arm-plates are more angulated and less curved along the distal 
edge than in O. ciliars. 
Colour when dried white ; Forbes states that in life the disk and 
the centre of the arms are pink, with white or orange spots on the 
disk. 
R= 27; 25; 21:5. 
i — a eed 
Distribution. North Atlantic (Eastern side); Arctic Ocean; 
Mediterranean. ‘T’o 250 fms. 
