104 ASTEROIDEA. 
surface shows stoutish bars forming the framework of the arm, but 
the spines developed are few, short, and sharp. No major pedicel- 
lari, Madreporite near the edge of the disk, rather large. 
Colour, when dried, light brown. 
Breadth of arm 
R. Tr. at base. 
12 3°5 4 
9°5 4 3°5 
9 3°5 3 
a-f. Outer Skerries, Shetland. Rev. Canon Norman. 
y-t. Coast of co. Down. Belfast Nat. Hist. Soe. 
Asterias tenuispinis. 
Asterias tenuispina, Lamk. An. s. Vert. ii. (1816) p. 561 ; Ludwig, Mitth. 
zool. Stat, Neap. i. (1879) p. 538. 
IT should have included this species in this Catalogue on the strength of a 
specimen stated, with a query, to have come from Lyme Regis, and presented by 
the late Lord Enniskillen, but for the very emphatic answer in the negative 
which the Rev. Canon Norman gave (Ann. & Mag. vi. (1890) p. 502) to my 
query (¢. ¢. p. 424), “Is Asterias tenuispinis, Lamk., a ‘ British’ species ?” 
BRISINGIDK (see p. 24). 
Key to the Genera of Brisingide. 
Without dorsal PRP UL sie este eaiarvenecatouee sieentets 1. Bristnaa, p. 104. 
With dorsal maples scp sue eters unless le oysie ulnar 2. OprnrA, p. 105. 
1. BRISINGA. 
Brisinga, Ashjprnsen, Fauna Litt. Norv. ii. (1856) p. 95; Sars, On 
some Remarkable Forms, §e. (1875) p. 101; Ludwig, Zeitschr. f. wiss. 
Zool, xxxi. (1878) p. 216; Sladen, Chall. Rep, Ast. (1889) p. GOL. 
Disk small, rays less than or not much more than twenty, 
with ridge-lke lateral and dorsal bands on the proximal part of 
the arms; no dorsal papulee; major pedicellarix numerous; no 
minor pedicellariz. 
1. Brisinga endecacnemos. 
Brisinga endecacnemos, Ashjornsen, Faun, Litt. Norv. ii. (1856) p. 95, 
pl. ix. figs. 1-15; Sars, On some Remarkable Forms Se. (1876 
p. 101. 
R= 138 or 147. 
Arms eleven, long, delicate, with moderate transverse ridges on 
the proximal part of the arm; ambulacra wide, bordered by two or 
three more or less delicate spines, beyond which is a row of long 
and rather strong spines. Madreporite prominent. 
Distribution. Kastern side of North Atlantic from Norway to 
Spain. 100-1095 fms. 
