97 

 6. Stephcuwmetra indica (E. A. Smith). 



E. A. Smith. Ann. and Mag. Nat. Hist., series 4, vol. if, 1876, p. 406 {Comatula indica). 



Phil. Trans. Roy. Soc, vol. 168, 1879, p. 564, pi. 51, figs. 3, 30 — b [Comatula indica). 



BELL. Proc. Zool. Soc. London, 1 888, pp. 384, 387 {Antedon palmata, part). 



HaRTLAUB. Nova Acta der Ksl. Leop.-Carol. deutschen Akademie der Naturforsch., vol. 58, 



1891, N" 1, p. 59 {Antedon monacantha, part; specimen from Torres Strait). 

 THURSTON. Madras Government Museum Bulletin, 1894, N° 1, p. 28; N" 2, p. 114 (Antedon 



palmata, part). 

 Bell. in Gardiner, Fauna and Geography of the Maldive and Laccadive Archipelagoes, vol. 1, 



1902, part 3, p. 225 {Actinometra maculata, part). 



Trans. Linn. Soc. (Zool.), series 2, vol. 13, 1909, part 1, p. 20 [Antedon palmata). 



A. H. Clark. Buil. du Mus. d'hist. nat., Paris, 191 1, N" 4, p. 252. 



Proc. U.S. Nat. Mus., vol. 40, 191 1, p. 26. 



The Crinoids of the Indian Ocean, 1912, p. 135; p. 136 (under 5. monacantha, specimens 



from off northeastern Ceylon). 

 REICHENSPERGER. Abhandl. der Senck. naturforsch. Ges., vol. 35, 1913, Heft i,p. 102 (Stephano- 



metra monacantha). 

 A. H. Clark. Smithsonian Miscellaneous Collections, vol. 61, 1913, N" 15, p. 29. 

 H. L. Clark. Carnegie Institution of Washington Publication N°2i2, 191 5, p. 103 (Stephano- 



m e tra monacantha). 



Stat. 301. io°38'S., i23°25'.2E. 22 Metres. 1 Ex. 



In this specimen the 20 arms are 115 mm. long; the fiat dorsal pole of the centrodorsal 

 is 2 mm. in diameter; the cirri are XXXIII, 20 — 21, 20 mm. long; P 3 is 15 mm. long with 

 15 — 16 segments of which the fourth and fifth are the longest; on the inner arms P 3 is 12 mm. 

 long, though composed of the same number of segments. P s is relatively slender, much less 

 spine-like than usual, more flexible basally, becoming very slender distally; the three basal 

 segments are about as long as broad, the fourth about one third again as long as broad; the 

 remaining segments are elongated. 



This specimen appears to be identical with Hartlaub's specimen of monacantha from 

 Torres Strait. It also agrees with specimens of indica at hand from Ceylon, and with others 

 from Madagascar which I have examined, though the size is somewhat greater. 



There can be little doubt that the specimen taken by Dr. H. L. Clark at Maër Island, 

 Torres Strait, and recorded by him as 5". monacantha, belongs to this species. 



V. Family Mariametridae A. H. Clark. 

 Key to the Genera of the Family Mariametridae. 



a 1 Cirri very large and long, with more than 40 (usually 50 — 80) segments 

 b 1 Pj on the outer arms greatly elongated and flagellate, more than five 

 times as long as the following pinnules ; division series very narrow, 



very deep dorsoventrally, and very widely separated Pontiometra 



b 2 Pj only very slightly, if at all, longer than P 2 , and of the same character; 

 division series nearly or quite in apposition laterally through the extension 

 of their ventrolateral borders Oxymetra 



SIBOGA-EXPEDITIE XLII b. I', 



