188 THE RECENT CRINOIDS 
Colobometra perspinosa (P. H. Carpenter). 
Antedon perspinosa 1881. P. H. Carpenter, Notes from 
the Leyden Museum, vol. 3, p. 178. — 1891. Harr- 
LAUB, Nova Acta Acad. German., vol. 58, N°. 1, p. 85 
(reference to the Leyden specimen and to Antedon 
loveni only). 
Colobometra perspinosa 1909. A. H. Crark, Proc. Biol. Soc. 
Washington, vol. 22, p. 6. 
Jobi (von Rosenberg). — The cirri are XIII, 53, 
55, 56, 57, 58 and 59, long and comparatively slen- 
der, tapering slightly in the distal half; the longer 
proximal segments are slightly (about one third) longer 
than broad. Pa is absent; the IBr, are short, three times 
as broad as long; the IBr, are also short, twice as broad 
as long. The synarthrial tubercles are small, but well 
marked, with the proximal half (on the IBr,) more or less 
spinous. P, is slightly stiffened, about as two thirds the 
length of P,, with about fifteen segments which become 
squarish on the third and distally three times as long as 
broad. P, is enlarged and greatly stiffened; P, is slightly 
larger than P,, but similar to it. The following pinnules 
to P, or P, are similar, but slowly decrease in length and 
thickness; those following are only slightly stiffened. The 
distal pinnules are very long and slender, with about twenty- 
seven segments. 
The proximal pinnules are comparatively slender, not so 
stout as those of C. vepretum; the cirri are also slightly 
less stout than are those of that species. P, is rather 
strongly prismatic, and the following pinnules are prismatic 
for a diminishing distance basally. 
Amboina (coll. Ludeking), — The cirri are XII, 
56—65, exactly like those of the preceding. The whole 
animal exactly resembles the type. 
The stiffness of P,, which is composed of elongated 
Notes from the Leyden Museum, Vol. XX XIII. 
