168 ECHINODERMA OF THE INDIAN MlTSEUM, PART Vn. 



Port Blair , Andaman Islands. — One specimen. 

 Other Record. — Philippine Islands. 

 Depth. — 28-58 fathoms. 



COLOBOMETRA CHADWICKI. 



Antedon serripinna 1008. Chadwick, Journ. Linn. See. (Zool.), vol. 31. p. 44. 

 Colobowefra cliadwicki 1911. A. H. Clark. Proc. U. S. Nat. Mus., vol. 40, p. 'MX 



Habitat. — Suez. 

 Depth. — 10 fathoms. 



Genus OLIGOMETRA. 

 Olicjometra 1908. A.H.Clark, Proc. Biol. Soc. Washington, vol. 21, p. 12(i 

 (Antedon serripinna P. H. Carpenter, 1881). 



OLIGOMETRA GRACILICIRRA. 



Oligometra gracilicirra 1908. A. H. Clark, Smiths. Miscell. Coll. (Quarterly 



Issue), vol. 52, part 2, p. 221. 



Locality. — Andaman Islands. — Eive specimens: one of these, in a fairly 

 good state of preservation, has arms ap])roximately 50 mm. long, the cirri being 

 XV, 30-31, 12 mm. long; the segments of the lower pinnules have exceedingly 

 spiny distal ends, this character becoming gradually less marked and disappear- 

 ing at about the tenth pair ; the first and following cirrus segments have the dis- 

 tal dorsal edge everted, this eversion gradually becoming higher and narrower, 

 and transforming into a long spine after the seventh. The colour is white, the 

 IBr series and arms with a lateral purple line which fades away distally on the 

 arms; each cirrus segment has a narrow central purple band. This specimen, 

 when placed side by side with the type, showed no differences. Three of the 

 others resemble it. The remaining one is deep violet in colour, the cirri yellow 

 with the usual purple bands on each segment. The proximal pinnules are not so 

 spiny as usual, and P^ has about twelve segments instead of nine. 



Other Record. — Tawi Tawi group, Philippine Archipelago. 



Depth.— 49 fathoms. 



OLIGOMETRA GRACILICIRRA var. ORNATA. 

 Oligometra gracilicirra var. orvata 1911. A. H. Clark, Proc. V. S. Nat. Mus., vol. 

 39, p. 544. 



Habitat. — -Philippine Islands. 

 Depth. — 44 fathoms. 



OLIGOMETRA IMBRICATA. 



Antedon cupuliferus var. LUtken, MS. 



Oligometra imbricata 1908. A. H. Clark, Proc. Biol. Soc. Washington, vol. 21 

 p. 228, 



