A. H. CLAKK : THE CRINOIDS OF THE INDIAN OCEAN. 227 



CHARITOMETRA INCISA. 



Antedon incisa 1888. P. H. Carpenter, " Challenger " Reports, vol. 26, Zoo- 

 logy, p. 124, pi. ii, figs. 1 ord; pi. xxi, figs. 1, 2. 



Charitometra incisa 1907. A. H. Clark, Smiths. Miscell. Coll. (Quarterly Issue), 

 vol. 50, part 3, p. 361. 

 Habitat. — Kermadec Islands. 

 Depth. — 630 fathoms. 



Suborder COMATULIDA MACROPHREATA. 



Comatidida Macro phreala 1909. A. H. Clark, Proc. Biol. Soc. Washington, vol. 

 22, p. 174. 



Family ANTEDONIDiE. 



Antedonidce 1865. Norman, Ann. and Mag. Nat. Hist. (3), vol. 15, p. 98.— 1908. 

 A. H. Clark, Proc. U. S. Nat. Mus., vol. 4, p. 211 (emended). 



Subfamily ANTEDONINM. 

 Antedonince 1909. A. H. Clark, Proc. Biol. Soc. Washington, vol. 22, p. 176. 



Genus MASTIGOMETRA. 



Mastigometra 1908. A. H. Clark, Proc. Biol. Soc. Washington, vol. 21, p. 229 

 (Mastigometra flagellifera, sp. nov.) 



MASTIGOMETRA FLAGELLIFERA. 



Mastigometra fiageUifera 1909,. A.H.Clark, Proc. Biol. Soc. Washington, vol. 

 21, p. 229.— 1909. Vidensk. Medd. fra den naturhist. Forening i Koben- 

 havn, 1909, p. 190. 

 Habitat. — Unknown. 



MASTIGOMETRA MICROPODA. 



Mastigometra micropoda 1909. A. H. Clark, Proc, U. S. Nat. Mus., vol. 36, 



p. 649. 



Description. — Centrodorsal low- hemispherical, 4 mm. in diameter at the 

 base, the polar area sHghtly convex, or flattened; cirrus sockets closely crowded, 

 very numerous, in four or five alternating rows. 



Cirri L-XC, 16, about 10 mm. long ; first two segments short, rather over 

 twice as broad as long, third as long as broad to about one third longer than 

 broad, fourth and fifth slightly longer; succeeding segments subequal, about as 

 long as broad; third to sixth segments shghtly '^dice-box shaped," the remain- 

 der with the ventral surface practically straight and the dorsal with a slight 



