11. Thalassonictra cchinata (P. H. Carpenter). 
r. H. Cari'ENTER. "Challenger" Reports. Com;itiilac, iS8S, p. 119, pi. 21, figs. 4, 5 [AiUedon 
ecliinatd). 
A. H. Clark. Smithsonian Miscellaneous Collections, vol. 61, 1915, N" 15, p. 46 (Thalasso- 
metra echinata). 
12. TItalassonictra imtlfispina (P. H. Carpenter). 
P. H. C.'\Rl'li.\'TER. "Challenger" Reports. Comatulae, 1888, p. 248, pi. 13, figs, i — 3; pi. 14, 
figs. 5 — 7; pi. 50, figs. 3 — 6; pi. 69, figs. I — 4 [Antedon uiultlspina). 
A. H. Cl.vriv. Smithsonian Miscellaneous Collections, vol. 61, 1913, N" i, p. 47. 
13. Thalassonietra omissa (Koehler). 
KoElILER. Echinodermes provcnant des campagnes du yacht "Princesse-Alice", 1909, p. 268, 
pl- 33' fiS- 'O [Antedon omissa). 
14. Tlialassometra attemiata A. H. Clark. 
A. H. Ci.ARK. Proc. Biol. See. Washington, vol. 22, 1909, p. 147 {Tlialassometra attemiata). 
— ■ — Crinoids of the Indian Ocean, 191 2, p. 204, fig. 38, p. 205 [Tlialassometra attenuatd). 
15. Thalasso7netra lusiianica (P. H. Carpenter). 
P. H. Carpenter, Proc. Roy. Soc. Edinburgh, vol. 12, 1884, p. 368 [Antedon lusiianica). 
"Challenger" Reports. Comatulae, 1888, p. 109, pi. 39, figs, i — 3 [Antedon lusitanica). 
Journ. Linn. Soc. (Zool.), vol. 24, 1892, p. 65 [Antedon lusitanica). 
Koehler. Echinodermes provenant des campagnes du yacht "Princesse-Alice", 1909, p. 267, 
pi. I, figs. 7, 8; pi. 32, figs. 12 — 14 [Antedon lusitanica). 
et Vanev. Bull, du Mus. d'hist. nat., Paris, 1910, N" i, p. 31 [Antedon [Crotalometra] 
lusitanica). 
A. H. Clark. Smithsonian Miscellaneous Collections, vol. 61, 1913, N" 15, p. 46 [Tlialasso- 
metra lusitanica). 
X. Family Charitometrid.ve A. H. Clark. 
Key to the Genera of the Family Charitometridae. 
a^ Proximal pinnules over twice as long as the very short middle and distal 
pinnules, and strongly carinate; arms usually from 20 to 30 in number; 
IIBr series 4(3 + 4) or 2, or both in the .same individual; IlIBr .series 
2(1 + 2), internally developed; ossicles of the division series and lower 
brachials usually with a more or less comple.x and highly developed tuber- 
cular ornamentation, though sometimes plain (West Indies; 121 — 720 
Metre.s) Crinometra 
a- Pro.ximal pinnules much less than twice as long as the middle and distal 
pinnules, usually only slightly, or not at all, longer 
b' small (arm length less than 60 mm., rarely over 45 mm.), with not more 
