51 
Hartlaub. Nova Acta dcr Leop.-Carol. deutschcn Akad. dcr Naturforsch., vol. 58, 1891, 
N" I, p. 95 {Actinoiiutra bennetti). 
Norman. Ann. and Mag. Nat. Hist., (6), vol. 7, 1891, p. 3S7 [Actinometra peronii). 
Bell. Proc. Z06I. Soc. London, 1S94, p. 396 {Actinometra bennetti). 
KOEHLER. Revue Suisse zool., vol. 3, 1895, p. 290 {Actinometra robustipinna). 
Bell. Willey's Zoological 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 
{Comant/tits \Coiiianthus\ bennetti). 
Notes from the Lcyden Museum, vol. 33, 191 1, p. iSo {Comanthus bennetti). 
Bull, du mus. d'hist. nat. de Paris, 191 1, N" 4, p. 248 {Comanthus bennetti). 
Die Fauna Sudwest-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, 1912, p. 391 {Comanthus bennetti). 
Crinoids of the Indian Ocean, 191 2, p. 93 {Comanthus bennetti). 
Proc. Biol. Soc. Washington, vol. 25, 191 2, p. 23 {Comanthus crassicirra). 
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 bennetti). 
Stat. 133. Anchorage oft' Lirung, Salibabu Island. Down to 36 Metres, i E.x. 
Stat. 240. Banda. 9 — 36 Metres, i Ex. 
Stat. 299. Buka or Cyrus Bay, southern coast of Rotti Island. Down to 34 Metres, i 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 flat 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 si.Kth 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 IBrj are 
rather widely separated. The IBr, are short, with a convex proximal border and slightly converging 
sides; they are about three times as broad as the median length. The IBr^ (axillaries) are broadly 
