H. €. CHADWICK—-REPORT ON THE CRINOIDEA,. 45 
the last few ossicles it is represented by a pair of parallel spines, and the 
penultimate one bears a strong opposing spine. 
In relative size the proximal pinnules of the armlets resemble those of the 
specimens from Ceylon, but the number of pinnular ossicles is larger. 
The second syzygy occurs at the ninth or tenth joint and the third at the 
fourteenth, 
Distribution. New Guinea, Tonga Islands, Ceylon, Red Sea. 
ANTEDON PARVICIRRA, Carpenter. 
This species, originaliy discovered by the ‘ Challenger’ in the neighbourhood 
of the Philippine Islands, is represented in Mr. Crossland’s collection by one 
specimen, and it is, perhaps, the most interesting addition to the Crinoid 
fauna of the Red Sea made by him, especially as no other record of its 
occurrence has heen made since the publication of Carpenter’s Report on the 
Crinoidea of the ‘ Challenger ’ Expedition. 
The type specimen has forty cirri, consisting of from ten to twelve ossicles ; 
in the one under notice seventeen are actually present, but the number was 
originally not less than twenty, and may have been twenty-five. They 
consist of fourteen ossicles, of which the first and the penultimate are the 
shortest. The intervening ones are long and cylindrical, with enlarged ends, 
the fifth and sixth being the longest. The penultimate one bears a minute 
opposing spine. 
The radials are not visible, except at the angles. The first primibrachs are 
very short and have a transverse furrow, deeper at the sides than in the 
median line, and are not in contact laterally ; the second (axillaries) are 
pentagonal, wider than long, and have a backward projection into the slightly 
incised first primibrachs. 
The first brachial is wedge-shaped and is just in contact with its fellow on 
the inner side of the armlet. The second brachial is twice the length of the 
first and slightly longer on the outer than on the inner side. ‘The third and 
fourth brachials are together nearly square and are united by syzygy. Then 
there follow a number of wedge-shaped brachials which, as the tip of the 
armlet is approached, become obliquely quadrate, but alternately longer on 
one side than on the other. 
In both branches of the left anterior arm the second syzygy occurs at the 
fifth joint, but in the others it is at the ninth. The third is at the fourteenth, 
and others follow between every third and fourth brachial with great regu- 
larity. The proximal pinnules have fewer ossicles than those of the type. 
Locality.— Suez Bay, 10 fathoms, mud. 
ANTEDON MARGINATA, Carpenter. 
With some little doubt I have referred to this species two small and 
imperfect specimens from the same locality as the foregoing. As in the type 
5* 
