A. H. CLARK : THE CRINOIDS OF THE INDIAN OCEAN. 79 



COMATULA ROTALARIA. 



Comatula rotalaria 1816. Lamarck, Hist. nat. des animaux sans vertebres 



vol. 2, p. 534. 

 Actinometra jukesii 1879. P. H. Carpenter, Proc. Roy. Soc, vol. 28, p. 390. 

 Actinometra paucicirra 1884. Bell, Rep. Zool. Coll. H.M.S. " Alert," p. 169, 



pi. xvii, figs. A, Aa.— 1888. P. H. Carpenter, " Challenger" Reports, 



vol. 26, Zoology, p. 291, pi. iv, fig. 6; pi. v, fig 3 ; pi. liv. 

 Actinometra aruensis 1888. P. H. Carpenter, "Challenger" Reports, vol.26, 



Zoology, p. 292, pi. iv. fig. 6. 



Habitat. — Northern and north-western Australia; Reef of Atagor : Aru 

 Islands. 



Depth. — Littoral, and down to 15 fathoms. 



Remarks. — The " Actinometra rotalaria'' from the Philippine Islands des- 

 cribed and figured by Carpenter in the " Challenger " report is obviously the 

 same thing as Miiller's Alecto parvicirra and, on the strength of this, I have hereto- 

 fore employed the Lamarckian name for that species. Upon examining the 

 Lamarckian types at Paris, however, I discovered that Comatula rotalaria is in 

 reality the form which was called by Carpenter jukesii and later (adopting Bell's 

 name) paucicirra, an entirely different thing, belonging to an entirely distinct 

 genus. 



COMATULA ETHERIDGEI. 



Comatula etheridgei 1910. A. H. Clark, Australian Museum Memoirs. 

 Habitat. — Holothuria Bank, north-western Australia ; Baudin Island. 

 Depth. — 38 fathoms. 



COMATULA BRACHIOLATA. 



Comatula brachiolata 1816. Lamarck, Hist. nat. des animaux sans vertebres, 



vol. 2, p. 535. 

 Alecto rosea 1841. J. MtJLLER, Archiv fiir Naturgesch., 1841, i, p. 143. 



Habitat. — Southern coast of Australia. 



Remarks. — I have examined the types both of Lamarck's Coma/ « to brachiolata 

 (at Paris) and of Miiller's Alecto rosea (at Berlin) and find them to be specimens 

 of the same species. A fine specimen in the British Museum was taken at Port 

 Phillip, South Australia ; this is the first definite record for the species ; 

 Lamarck's specimens probably came from King George's Sound. 



COMATULA SOLARIS. 



Comatula Solaris I HI 6. Lamarck, Hist. nat. des animaux sans vertebres, vol. 



2, p. 533. 

 Actinometra imperialis 1841. J. MtJLLER, Archiv fiir Naturgesch., 1841, i, 



p. 140. 



