400 BULLETIN 82, UNITED STATES NATIONAL MUSEUM 



Actinometra echinoptera Continued. 



var. rubiginosa-discoidea = Nemaster discoidea. 



Blake station 231. 



var. valida-meridionalis = Comactinia echinoptera. 



Blake station 272. 



var. aplanata = Neocomatella pulchella. 



No locality. 



var. multicirra = Nemaster iowensis; Hartlaub gives this 



as the same as Carpenter's blakei, 

 which is Comactinia echinoptera. 



In 1918 Dr. H. L. Clark recorded numerous specimens of this species from off 

 Habana, Cuba, in 110-200 fathoms which had been obtained by the University of 

 Iowa's Bahama expedition in 1893, and in 1921 the present author listed it from 

 various localities off Barbados, where it was found by the University of Iowa's 

 Barbados- Antigua expedition in 1918. 



Genus COMATULIDES A. H. Clark 



Comanthus (part) A. H. CLARK, Proc. Biol. Soc. Washington, vol. 21, 1908, p. 221; Zool. Anzeiger, 

 vol. 34, No. 11-12, 1909, p. 366. 



Cominia A. H. CLARK, Proc. TJ. S. Nat. Mus., vol. 36, 1909, p. 497 (diagnosis; genotype Comanthus 

 decameros A. H. Clark, 1908); Proc. Biol. Soc. Washington, vol. 22, 1909, p. 175 (referred 

 to the Comactiniinae) ; Vidensk. Medd. fra den naturhist. Forening i K0benhavn, 1909, p. 150 

 (off the Goto Is., 170 fathoms); p. 193 (probably occurs at Singapore); Ann. and Mag. Nat. 

 Hist., ser. 8, vol. 7, 1911, p. 644 (compared with Comissia); Memoirs Australian Mus., vol. 4, 

 pt. 15, 1911, p. 725 (absent from Australia); p. 741 (closely related to Comatula); Proc. U. S. 

 Nat. Mus., vol. 43, 1912, p. 389 (affinities and relations; closely allied to Comatula and to 

 Comactinia); Crinoids of the Indian Ocean, 1912, p. 9 (does not occur in the area of maximum 

 intensity of the East Indian fauna; absent from Australia); p. 10 (confined to Japan); p. 13 

 (corresponds to Leptonemaster and Comatilia); p. 20 (only known from the Korean Strait); 

 p. 55 (in key); p. 83 (original reference; genotype); Beitrage zur Kenntnis d. Meeresfauna 

 Westafrikas, Echinod. II, Crinoidea, 1914, p. 309 (corresponds, in part, to Comactinia); 

 American Naturalist, vol. 49, 1915, p. 525 (bathymetric range); p. 539 (asymmetry). 



Comatulides A. H. CLARK, Unstalked Crinoids of the Siboga Exped., 1918, p. 24 (in key; range); 

 p. 32 (key to the included species). 



Diagnosis. A genus of Comactiniinae including species in which the cirri are 

 numerous, XXIV-XL, long and slender, strongly compressed laterally, and com- 

 posed of not more than 20 segments, none of which are broader than long. The 

 10 arms are slender, gradually tapering distally, and never unusually attenuated in 

 the outer portion. The IBr series are relatively long, narrow, and widely free 

 laterally. The segments of the genital pinnules beyond the first 2 are not broadened, 

 being as long as, or longer than, broad. 



Geographical range. From southwestern Japan to the Lesser Sunda Islands. 



Bathymetrical range. From 311 to 984 meters. 



Remarks. This curious and isolated genus bears much the same relationship 

 to the other genera of Comactiniinae that Comatilia, Comatonia, and Microcomatula 

 bear to the other genera of Capillasterinae, and, like them, it is a deep-water type. 



