171 



ii. Thalassometra echinata (P. H. Carpenter). 



P. H. Carpenter. "Challenger" Reports. Comatulae, 1888, p. 119, pi. 21, figs. 4, 5 {Antedon 



echinata). 

 A. H. CLARK. Smithsonian Miscellaneous Collections, vol. 61, 1915, N' 1 15, p. 46 {Thalasso- 



tnetra echinata). 



[2. Thalassometra multispina (P. H. Carpenter). 



P. H. Carpenter. "Challenger" Reports. Comatulae, 1888, p. 248, pi. 13, figs. 1 — 3; pi. 14, 



figs. 5 — 7; pi. 50, figs. 3 — 6; pi. 69, figs. 1 — 4 {Antedon multispina). 

 A. H. CLARK. Smithsonian Miscellaneous Collections, vol. 61, 19 13, N n 1, p. 47. 



13. Thalassometra omissa (Koehler). 



KüEHLER. Échinodermes provenant des campagnes du yacht "Princesse-Alice", 1909, p. 268, 

 pl- 33> fig- I0 {Aitedon omissa). 



14. Thalassometra attenuata A. H. Clark. 



A. H. Clark. Proc. Biol. Soc. Washington, vol. 22, 1909, p. 147 {Thalassometra attenuata). 

 Crinoids of the Indian Ocean, 19 12, p. 204, fig. 38, p. 205 {Thalassometra attenuata). 



15. Thalassometra lusitanica (P. H. Carpenter). 



P. H. CARPENTER, Proc. Roy. Soc. Edinburgh, vol. 12, 1884, p. 368 {Antedon lusitanica). 



"Challenger" Reports. Comatulae, 1888, p. 109, pi. 39, figs. 1 — 3 {Antedon lusitanica). 



Journ. Linn. Soc. (Zool.), vol. 24, 1892, p. 65 {Antedon lusitanica). 



Koehler. Échinodermes provenant des campagnes du yacht "Princesse-Alice", 1909, p. 267, 

 pi. 1, figs. 7, 8; pi. 32, figs. 12 — 14 {Antedon lusitanica). 



et Vaney. Buil. du Mus. d'hist. nat., Paris, 1910, N" 1, p. 31 {Antedon [Crotalometra] 



lusitanica). 



A. H. Clark. Smithsonian Miscellaneous Collections, vol. 61, 191 3, N° 15, p. 46 {Thalasso- 

 metra lusitanica). 



X. Family Charitometridae A. H. Clark. 



Key to the Genera of the Family Charitometridae. 



a 1 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(3-1-4) or 2, or both in the same individual; IIIBr series 

 2(1 + 2), internally developed; ossicles of the division series and lower 

 brachials usually with a more or less complex and highly, developed tuber- 

 cular ornamentation, though sometimes plain (West In dies; 121 — 720 

 Metres) Crinometra 



a 3 Proximal pinnules much less than twice as long as the middle and distal 

 pinnules, usually only slightly, or not at all, longer 

 b l small (arm length less than 60 mm., rarely over 45 mm.), with not more 



