ECHINODEEMS FROM WEST AUSTRALIA. 233 
25 mm. across tlie disk, and has 25 amis: 90 mm. long more or less. 
Cirri XXX, 19-22. There is only one record of C. stelligera from a point 
anywhere nearly so far south as Wooded Isle, and that is the isolated and 
dubious record from Port Jackson. The species ranges from Ceylon to 
Samoa and is very common at the Murray Islands, east o£ Torres Strait, but 
is not known from the coast of Queensland. 
COMATULA SOLARIS. 
Lamarck, 1816, Anim. s. Vert. ii. p. 5.33. 
A specimen with the 10 arms, 125 mm. + long and about 7 mm. wide, 
near biise, was taken at East Wallaby Island. It is almost black, but has a 
longitudinal liglit stripe on the dorsal side of each of the arms, which are 
remarkably stout. A second specimen not quite so large, taken in the 
dredge off Long Island, has no trace of the light stripe on the dorsal side of 
the arms. It has the cirri XIII, 18. 
COMATULA PECTINATA. 
Asterias pectinata Linn^, 1758, Syst. Nat. ed. x. p. 663. 
Comatiila pectinata A. H. Clark, 1908, Proc. U.S. Nat. Mus. xxxiii. p. 685. 
This comatulid seems to be rather common at the Abrolhos, as there are 
13 specimens in the present collection : 9 dredged off Long Island and 4 
dredged near First Island. All are brown, pale brown, or yellow-brown in 
colour. They are small, only two or three having arms 100 mm. long. The 
cirri range from I-XIV, with segments 10-14, but in no case are they 
arranged in pairs at the corners of the centrodorsal as they are in C. purpurea. 
Otherwise these specimens would, because of their small size, be more 
naturally assigned to that species, which Mr. A. H. Clark has recorded from 
" between Fremantle and Greraldton.'^ Several of the specimens examined 
by Mr. Clark were not typical C. purpurea, and intergrade evidently with 
C pectinata. Gislen (1919) has found so much ihtergradation between 
C. pectinata and C. purpurea that he retains the latter name as varietal only, 
and I am inclined to agree with him that it is certainly not specific. Just 
what the relation between C. purpurea and C. pectinata really is requires still 
further study. 
COMANTHUS ANNULATA. 
Actinometru anmdata Bell, 1882, Proc. Zool. Soc. London, p. 535. 
Cumantlnis ( Vnnia) annulata A. H. Clark, 1911, Mem. Austral. Mils. iv. p. 757. 
The seveii specimens of this handsome species were all taken on the shores 
of Wooded Isle. The number of arms ranges from 36 to 47 and their length 
from 100 to 125 mm. ; in the specimen with 36 arms every Br series is 
4 (3 -f 4), but in the one with 47 there are four II Br series, 2 and one 
IV Br series, 2. Cirri very weak, V-VIII, 12. The uniformity of these 
specimens in coloration is their most notable feature, and in this they agree 
LINN. JOURN. ZOOLOGY, VOL. XXXV. 17 
