I3S 
Stat. 305. ]\Iid-channel in Solor Strait, oft' Kampong Menanga. 113 Metres, i Ex. 
There are apparently 20 arms (12 on the three rays preserved) about 70 mm. long. 
The cirri are XMI. One cirrus, not quite full size, with 39 segments remains. This example 
agrees well with specimens from the Philippine Islands. 
Pectinometra A. H. Clark. 
Key to the Species of the Genus Pectinometra. 
a' Ossicles of the division series and first two brachials with no trace of median 
carination, rugose on the dorsal surface, and with finely crenulate edges 
which are not everted; cirri X — XV, 26 — 40 (usually 34 — 36); 15 — 20 arms 
(P h i 1 i p p i n e I s 1 a n d s) carduum 
a- Ossicles of the IBr series with a prominent high median keel ; a similar but 
much less developed (sometimes obsolete) keel on the ossicles of the IIBr 
series and the first two brachials; the edges of the ossicles of the division 
series may be everted, but are never crenulate; usually 20 arms • 
b' cirri with 41 — 48 segments; keel on the ossicles of the IBr series very 
high and prominent, especially proximally ; edges of the ossicles of the 
division series only slightly or not at all everted (Malay Archipelago 
and the Lesser Sunda Islands) magnijica 
\y cirri with 30 segments; keel on the ossicles of the IBr series lower and 
more uniform in height; edges of the ossicles of the division series 
prominently everted (souther n J a pa n) flavopiirpjirea 
I. Pectinometra magnijica (A. H. Clark). 
A. H. Clark. Proc. Riol. Soc. Washington, vol. 22, 1909, p. J"] {Caloinetra magnijica). 
The Crinoids of the Indian Ocean, 1912, p. 185, fig. 31, p. 186. 
Stat. 94. 5°ii'.2N., ii9°35'.4E. Sulu Sea. 450 Metres, i Ex. 
This specimen may be described as follows : 
The centrodorsal is very small, apparently truncated conical, the dorsal pole very 
slightly convex, obscurely tubercular, 1.5 tnm. in diameter; the cirrus sockets are arranged in 
ten columns of two, more rarely three, each. 
The cirri are XXII, 37 — 40 (usually 37), 28 mm. to 32 mm. long; the segments 
gradually increase in length to the sixth, which is about as long as broad, and after the ninth 
gradually decrease so that after the nineteenth they become about twice as broad as long; 
the terminal fifteen to eighteen segments taper gradually so that the last few segments are 
very small; all the segments have slightly overlapping ventral distal ends; after about the 
ninth segment the distal dor.sal ends of the segments become prominent, and in the outer half 
of the cirri the seofments bear the characteristic hio-h dorsal keels. 
