RECORDS OF IV. A. MUSEUM. 
134J 
COMATULA SOLARIS. 
Lamarck, 1816. Hist. Nat. Anim. s. Vert., vol. 2, p. 533. 
This species is well-known from Queensland and Torres Strait, 
and has been recorded from as far west as Holothuria Bank. Its 
occurrence on the western coast of Australia is therefore not 
remarkable. The specimen in the present collection is in what Mr. 
Clark (l.c.) calls the “broad-armed and generally robust phase” 
and is unicolor — almost black. 
Coast of West Australia. One specimen. No. 260. 
COMANTHUS ALTERNANS. 
Aciinometra aUernans, P. H. Carpenter, 1881. Notes from Leyden Mus., vol. 3, 
p. 208. 
This species has been recorded from the Philippines and from 
Port Molle, Queensland. Its occurrence, therefore, at the Abrolhos 
Islands, North-western Australia, is of no little interest. The 
specimen before me is small, having only 34 arms, each about 
60 mm. long, which is an inaccurate way of saying that the tip of 
each ray is a little more than 60 mm. from the centre of the disk. 
There are two cirri, attached to the margin of a flat centre-dorsal 
less than 3 mm. in diameter ; the larger cirrus is broken ; the 
smaller has 15 very short, slightly swollen joints. In three of the 
rays the II Br series is 4 (3+4), the III Br is 2, and the IV Br is 
4 (3-t-4) again ; in a fourth ray, on one side. III Br is 4 (3 + 4) and 
IV Br is 2 ; in the fifth ray, on both sides II Br is 2 ; and III Br 
is 2 also. The colour of this specimen is light wood-brown. On 
account of its small size and the fact that the two arms fail to show 
the regular alternation of the division series, I have hesitated in 
calling this specimen alternans, but I think there is really little 
doubt that it is a young example of that species. 
Abrolhos Islands, Western Australia. One specimen. No. 125. 
COMANTHUS PARVICIRRA. 
Aleclo parvicirra, J. Muller, 1841, Arch. f. Naturg., Jhrg. 7, vol. i, p. 145. 
Comanihus parvicirra, A. H. Clark, 1911. Mem. Aust. Mus., IV, pt. 15, p. 758. 
The occurrence of this species in the collection is quite to be 
expected since it has been previously recorded from Fremantle. 
Coast of West Australia. One specimen, without number. 
