A. H. CLARK: THE CRINOIDS OP THE INDIAN OCEAN. 117 



HIMEROMETRA sp. 



Actinometra robustipinna 1881. P. H. Carpenter, Notes from the Leytlen 



Museum, vol. 3, p. 201. 



The type of Carpenter's Actinometra robustipinrut, which was brought from 

 the Moluccas by H. C. Macklot, proves to be a specimen of a typical species of 

 Himerometra, possibly H. crassipinna. 



Genus CRASPEDOMETRA. 



Craspedometm 1909. A. H. Clark, Proc. Biol. Soc Washington, vol. 22, P- 8. 

 (Antedon acuticirra P. H. Carpenter, 1882). 



CRASPEDOMETRA ACUTICIRRA. 



Aiitedon acuticirra 1882. P. H. Carpenter, Journ. Linn. Soc. (Zool.), vol. 16, 



p. 509. 

 Antedon ludovici 1882. P. H. Carpenter, Journ. Linn. Soo. (Zool.), vol. 16, 



p. 510. 

 Antedon australis 1882. P. H. Carpenter.. Journ. Linn. Soc. (Zool.), vol. 16, 



p. 510. 

 Antedon bipartipinna 1882. P. H. Carpenter, Journ. Linn. Soc. (Zool.), vol. 16, 



p. 512. 

 Craspedometra acuticirra 1909. A. H. Clark, Proc. Biol. Soc. Washington, vol. 



22, p. 9. 



Localities. — Andaman Islands. — One specimen with twenty-two arms 120 

 mm. long, and cirri X, 43+, 50 mm. long ; all the IIBr series are present ; the 

 two IIIBr series are 2, developed internally ; the colour is whitish, the articula- 

 tions purple, the arms crossed by regular broad deep purple bands ; the cirri are 

 white, each segment with a saddle of purple ventrally, becoming rusty brown 

 at the tip. 



Gregory Island, Mergui Archipelago. — One example with thirty-one arms 

 120 mm. long ; the IIBr series are all present, 4 (3-|-4) ; the IIIBr series are all 

 present, developed internally, and there is an additional external one; two of 

 them are 4 (3-|-4), the others being 2 ; the cirri are XIII, 43—44, 40 mm. long. 

 In coloration it resembles the following. 



Ye, Burma. — One especially fine specimen with thirty-six arms 90 mm. long ; 

 the IIBr series are all 4 (3+4), the IIIBr series all 2, all present internally, and 

 six present externally ; the synarthrial tubercles are prominent ; the cirri are XII, 

 42+, 43+, and 44+. 



In coloration this specimen is yellowish white, the pinnules with occasional 

 small irregular blotches of light purple ; the cirri arc white, becoming rusty 

 brown at the tip, each segment with a saddle of dull jjurplish. 



