ro 
1Z ASTEROIDEA. 
. Oyster-beds, off Stackpole Head, Jan. 1889. 
g 
A. Cornwall. 
2. Polperro. 
4. Falmouth. W. P. Cocks, Esq. 
k. Plymouth. Prof. Stewart. 
i. Plymouth. 
m,n. Berwick. Dy. G. Johnston. 
o. Shetland Islands. KE. M. Nelson, Esq. 
2. Luidia sarsi. 
Luidia fragilissima, Forbes, Mem. Wern. Soc. viii. (1839) p. 123; 7d. 
Brit. Starf. (1841) p. 135 (pars). 
Luidia sarsii, Diib. § Kor. Gifu. Vet.-Akad. Forh. 1844 (1845), 
p- 118; Sars, Nyt Mag. x. (1859) p. 46; zd. Norg. Ech. (1861) p. 25 ; 
Norm. Ann. § Mag. xv. (1865) p. 118; Hodge, Trans. North. & 
Durh. iv. (1872) p. 184; Dan. §& Kor. Norske Nordhavs Ast. 
(1884) p. 94; Sladen, Chall. Rep. Ast. (1889) p. 258; Scott, 
Proce. R. Phys. Soc, Edin. 1890-1 (1892), p. 82. 
Luidia savignii, Diib. § Kor. Vet.-Ak. Hdlg. 1844 (1846) p. 254 
(pars), 
R = 5r (nearly). 
Five arms, not very long, tapering rather rapidly, so that they 
have the form of elongated triangles, rather but not very fragile. 
Ambulacra wide, bordered by three rows of spines, of which the 
median is the larger, while the innermost is directed towards the 
groove; there is a row of respiratory pores followed by infero- 
marginals as in L, ciliaris, the three or four large spines carried 
by which are proportionately and the smaller spines are absolutely 
larger than in the other species ; the rays of the stellate heads of 
the paxille are also longer, and one ray often forms a projecting 
spins. Madreporite small, obscure, marginal. Pedicellarie rare, 
small, papilliform. 
Colour, in spirit or dry, white. 
R.* r. 
35 6°5 
3l 6 
Distribution. Eastern side of Atlantic from Norway to Cape Verde. 
To 374 fms. 
a-c. Between Scotland and Faeroe Banks, ‘Porcupine’ Exp. (St. 46). 
374 fms. 
d-f. Off Island of North Rona, 33 fms. ‘Knight Errant’ Exp. (St. 3). 
g-j. Kast of Shetland Islands, 64 and ‘ Porcupine * Exp, (Sts. 67 & 
68). 
75 fms. 
k,l. Outside Valentia. BR. Trish Acad. 
m. Donegal Bay, 33-37 fms. R. Irish Acad. 
* The arms of the same specimen may differ a little in length. 
