Comatula Lamarck. 
Subgenus Validia A. II. (lark 
Key to Uie Species of the Subgenus Validia. 
a' All ot" the arms the same length (northern Australia and the Aru Is- 
lands) rota/aria 
a- The outer arms arising from each IlBr series are much shorter than the inner 
(n orth wes t ern A u St ral i a a n d t h e A r u I si a nds) cthcridgci 
\ . Comatula (Validia) rotalaria (Lamarck). 
Lamarck. Hist. nat. des animaux sans vertcbres, vol. 2, 1816, p. 534. 
P. H. CarI'KNTER. Proc. Roy. Soc, vol. 28, 1879, p. 390 (Actiiioinetru jukesii). 
Bell. "Alert" Report, 1S84, p. 168 (Actinomelra jiikesi); p. 169, pi. 17, figs. A, Aa (Acti- 
noinetra paucicirra). 
Bell. Proc. Linn. Soc. New South Wales, vol. 9, 1885, p. 498 [Actinoinetra jukesi). 
P. H. Cari'ENTER. "Challenger" Reports. Comatulae, 1888, p. 291, pi. 4, fig. 6; pi. 5, fig. 
3 ; pi. 54 {Actinoinetra paucicirra and Act. artiensis). 
DODERLEIN. Denkschr. Ges. Jena, vol. 8, 1898. p. 479 {Actinoinetra paucicirra). 
A. H. Clark. Bull, du ]\Ius. d'hist. nat., Paris, N" 4, 191 1, p. 247. 
Die Fauna Sudwest-Australiens, vol. 3, 1911, part 13, pp. 437, 440, 443 — 445. 
Recent Crinoids of Australia, 191 1, p. 739. 
• Crinoids of the Indian Ocean, 1912, p. 79. 
Smithsonian Miscellaneous Collections, vol. 61, 19 13, N" 15, p. S. 
ReichensI'ERGER. Abhandl. der Senck. naturforsch. Ges., vol. 35, 191 3, Heft i, p. 83. 
A. H. Clark. Internationale Revue der gesamten Hydrobiologie und Hydrographie, 19 15, 
p. 224. 
Stat. 273. Anchorage oft" Pulu Jedan, eastern coast of the Aru Islands (Pearl Banks). 13 
Metres, i Ex. 
This is a particularly fine specimen with 20 arms 165 mm. long, the posterior arms 
being 120 mm. long; all of the arms are grooved; the centrodorsal exactly fills the space 
between the radials, its surface being on precisely the same level as theirs so that its borders 
are difficult to detect. 
2. Comatula (Validia) ether idgei A. H. Clark. 
A. H. Clark. Recent Crinoids of Australia, 191 1, p. 741. 
Die Fauna Sudwest-Australiens. vol. 3, 191 1, part 3, pp. 440, 444, 445. 
Crinoids of the Indian Ocean, 1912, p. 79. 
Smithsonian Miscellaneous Collections, vol. 61, 1913 N" 15, p. 8. 
Internationale Revue der gesamten Hydrobiologie und Hydrographie, 191 5, p. 224. 
Stat. 273. Anchorage off Pulu Jedan, eastern coast of the Aru Islands (Pearl Banks). 13 
Metres. 5 Ex. 
The largest specimen has the inner arms 45 mm. long and the longest outer arms 20 
mm. long; some of the outer arms are not so long as the pinnules which they bear; these 
SIBOGA-EXPEDITIE XI.II*. 4 
