OPHIOCOMA,. 129 
Teeth, tooth- and mouth-papille ; tooth-papille very numerous. 
Disk granulated and radial shields hidden. Spines smooth, not 
numerous. 
1. Ophiocoma nigra. : 
Asterias nigra, Abilg. apud O. F. Miiller, Zool. Dan. iii. (1789) p. 20, 
pl. xciii.; LZ. Gmel. S. N. xiii. (1789) p. 3168 ; Retz. Diss. Spec. Ast. 
(1805) p. 31. 
Ophiura granulata, Flem. Brit. An. (1828) p. 488; Thompson, Nat. 
Hist. Trel. iv. (1856) p. 438. 
Ophiocoma nigra, M. Tr. Arch. f. Nat. 1840, p. 328; wd. Syst. Ast. 
(1842) p. 100; Dib. § Kor. Vet.-Ak. Hdlg, 1844 (1846), p. 284; 
Gray, Brit. Rad, (1848) p. 26; Herdman, Proc. R. Phys. Soc. Ed. 
v. (1880) p. 201; Leslie §- Herdm. op. cit. vi. (1881) p. 87; Barrots, 
Rev. Biol. i. (1888) p. 73; Hyelstrup, Zool. Dan. Pigh. (1890) 
p- 29, pl. iii. fig. 4. 
Ophiocoma granulata, Forbes, Mem. Wern. Soc. viii. (1839) p. 127; 
id. Brit. Starf. (1840) p. 50. 
Asterias tricolor, Adzlg. Zool, Dan. iii. (1789) p. 28, pl. xevil.; Retz. 
Diss. Spec. Ast. (1805) p. 31. 
Ophiura spheerulata, Ness. Coll. Zool. Scan. (1817) p. 16. 
Ophiocoma nilssoni, M. Tir. Syst. Ast. (1842) p. 100. 
A moderately sized stout species. 
Disk rounded, covered with a fine granulation, which ceases only 
near the bursal slits; arms fairly stout, seven or eight times the 
radius of the disk. About ten teeth, a number of small tooth- 
papille ; mouth-shield irregular in form, but often lens-like and 
broader than long; four upstanding mouth-papille on either side. 
Upper arm-plates wider than long, but soon encroached on by the 
side arm-plates, which carry five or six rather long, sharp spines. 
Two tentacle-scales to very far out in the arm, then only one. 
Colour black or dark brown, the arms lighter than the disk ; 
’ sometimes lighter, and sometimes spotted. 
R. r. 
95 11 
76 10 
56 8°5 
50 8-5 
40 4°5 
Distribution. Scandinavian Seas; Barents Sea. ‘To 87 fms. 
a, 6. Between Plocton and Loch Reraig, John Murray, Esq. 
21/9/91. 
ec. Sound of Mull, 70 fms., 5/9/87. John Murray, Esq. 
d, e. Loch Leven, 25 fims., 27/8/87. John Murray, Esq. 
f,g. Firth of Lorn, 50 fms. John Murray, Esq. 
h, i. Near Trench and Kilbrennan Sound, John Murray, Esq. 
10-14 fms. 
j-l. Kilbrennan Sound. John Murray, Esq. 
m. 4 miles S.E. of Sanda, 30-38 fms. John Murray, Esq. 
n, 0. West coast of Scotland. John Murray, Isq. 
K 
