CRINOIDEA—CLARK. 9 
Colour im life——Arms white, pinnules, and occasionally the cirri also, light 
heliotrope or violet, the ventral surface yellow or yellowish (Station 2). Sometimes 
the arms are narrowly banded with violet at the syzygies (Station 10). 
Notes.—Of the sixty-four specimens in the collection, fifty-three have the usual 
10 rays and 20 arms. One example has 10 rays and 22 arms (Station 12), one of the [Br 
axillaries bearing two IIBr series, resembling the [Br series, each with two arms. Four 
specimens have 9 rays and 18 arms (Stations 1, 2 [2], and 3). Three specimens have 8 
rays and 16 arms (Stations 2, 8, and 12). Three specimens have 6 rays and 12 arms 
(Stations 1 [2], and 8). Except for the 9-rayed examples, these are all much less than 
full size. The 8-rayed specimen from Station 8 is about two-thirds grown, and that from 
Station 12 is very small. The 6-rayed specimens are half the normal size or smaller. 
In the specimen with two IIBr series and 22 arms (Station 1) one of the II Br series 
is normally developed. The second is situated on the left distal face of the 1Br axillary 
and is turned so that its dorsoventral axis makes an angle of 90° with the dorsoventral 
axis of the other, and of the IBr series which bears them. The axillary of this IIBr series 
therefore has one of its lateral angles (the right) extending directly outward while the 
other (the left) is directed inward. Of the two arms arising from this axillary, one 
(which normally would be the right) extends outward from the general circle of arms 
with its dorsal surface to the left, while the other (normally the left) extends inward 
within the circle of arms and is not visible in external view. 
In some of the specimens (Station 9) the middle two-thirds of the outer half of 
the fourth and following brachials is abruptly elevated and densely covered with very 
small erect spines; or (Stations 2, 10) on the sixth and following brachials a triangular 
area with the base occupying the entire dorsal portion of the distal edge and the apex 
in about the middle of the middorsal] line is abruptly elevated and finely spinous. This 
elevation of a portion of the dorsal surface of the brachials disappears at about the 
thirtieth brachial, after which point the brachials have slightly produced and strongly 
serrate distal ends and sometimes a roughened dorsal surface. 
Some individuals (Station 1) show no elevation at the synarthrial lines, while in 
others (Station 1) there are rather prominent small conical synarthrial tubercles. 
The longest complete cirri (Stations 1, 10) are 70-80 mm. long and consist of 36-40 
segments. The terminal claw is long, sharp, and very slender, gently curved in the 
proximal third but becoming straight in the outer two-thirds. 
In the largest specimen with well preserved arms these are about 150 mm. in 
length; but im some of the specimens the arms must have been nearly or quite 200 mm. 
long. 
Genus SOLANOMETRA A. H. Clark. 
SOLANOMETRA ANTARCTICA (P. H. Carpenter). 
Localities.—Station 1, 354 fathoms, December 22, 1913 (one); Station 3, 157 
fathoms, December 31, 1913 (five); no locality (three). 
3242—B 
