5i 



HARTLAUB. Nova Acta der Leop.-Carol. deutschen Akad. der Naturforsch., vol. 58, 1891, 



N° 1, p. 95 [Actinometra bennettï). 

 NORMAN. Ann. and Mag. Nat. Hist., (6), vol. 7, 1891, p. 387 [Actinometra peronii). 

 Bell. Proc. Zool. Soc. London, 1894, p. 396 [Actinometra bennettï). 

 KOEHLER. Revue suisse zool., vol. 3, 1895, p. 290 [Actinometra robustipinnd). 

 BELL. Willey's Zoölogical Results , part 2, 1899, p. 134 [Actinometra bennetti and Act. 



grandicalix). 

 A. H. CLARK. Vidensk. Medd. fra den naturhist. Forening 1 Kobenhavn, 1909, p. 147 



[Comantluis [Comanthus] bennetti). 



Notes from the Leyden Museum, vol. 33, 19.11, p. 180 [Comanthus bennetti). 



Buil. du mus. d'hist. nat. de Paris, 191 1, N° 4, p. 248 [Comanthus bennetti). 



Die Fauna Südvvest-Australiens, vol. 3, 1911, Lief. 13, pp. 439, 443 [Comanthus bennetti). 



Memoirs of the Australian Museum, vol. 4, 191 1, part 15, p. 754 [Comanthus [Bennettia] 



bennetti). 



Proc. U. S. National Museum, vol. 43, 19 12, p. 391 [Comanthus bennetti). 



Crinoids of the Indian Ocean, 1912, p. 93 [Comanthus bennetti). 



Proc. Biol. Soc. Washington, vol. 25, 191 2, p. 23 [Comanthus crassicirrd). 



Smithsonian Miscellaneous Collections, vol. 60, 191 2, N° 10, p. 8 [Comanthus bennetti). 



Smithsonian Miscellaneous Collections, vol. 61, 191 3, N° 15, p. 15 [Comanthus benrfetti). 



Stat. 133. Anchorage off Lirung, Salibabu Island. Down to 36 Metres. 1 Ex. 



Stat. 240. Banda. 9 — 36 Metres. 1 Ex. 



Stat. 299. Buka or Cyrus Bay, southern coast of Rotti Island. Down to 34 Metres. 1 Ex. 



The small specimen from Stat. 133 I at first considered as representing a new species 

 related to C. japonica. It is evidently very immature, for the irregularity in the numbers of the 

 arms on the different rays indicate that it is undergoing adolescent autotomy. The earlier cirri 

 have slight dorsal processes, and this led me to consider it near C. japonica ; but the later 

 cirri appear to be quite without them. In very young C. japonica the young cirri possess very 

 strong dorsal processes. 



The centrodorsal is flattened-hemispherical, small, with a fiat dorsal pole 2 mm. in 

 diameter; the cirrus sockets are arranged in one and a partial second irregular marginal rows. 



The cirri are XVII, 17 — 24, 15 mm. to 24 mm. long, large and stout; the first segment 

 is short, the following increasing in length to the fourth, which is nearly or quite as long as 

 broad, and still further increasing to the fifth and sixth or sixth and seventh which are the 

 longest, nearly or quite half again as long as broad; the following gradually decrease in length 

 so that the last eight or ten are slightly broader than long; on the fully developed cirri (which 

 are evidently not of the type which the animal will possess when adult) the twelfth or thirteenth 

 and following segments have small subterminal dorsal tubercles; the shorter distal segments are 

 slightly compressed laterally and have a polished surface, though this begins gradually without 

 a transition segment; the opposing spine is small, low and broad, median or subterminal. 



Deep but very narrow subradial clefts are present. 



The mouth is interradial and submarginal; the anal tube is central. 



The radials are just visible beyond the edge of the centrodorsal, extending well up in 

 the angles of the calyx; they are slightly separated distally, so that the bases of the IB^ are 

 rather widely separated. The IB^ are short, with a convex proximal border and slightly converging 

 sides; they are about three times as broad as the median length. The IBr 3 (axillaries) are broadly 



