PART 5 A MONOGRAPH OF THE EXISTING CRINOIDS 617 



Atlantis station 3393; north of Ca.yo Coco, Camagucy Province, Cuba (lat. 22°36' 

 N., long. 78°19' W.); 402 meters; April 27, 1939 [H. L. Clark, 1941]. 



Atlantis station 3394; north of Cayo Coco, Camagucy Province, Cuba (lat. 22°34' 

 N., long. 78°14' W.); 366 meters; April 27, 1939 [A. H. Clark, 1940; H. L. Clark, 1941] 

 (3, M.C.Z., including the holotype, 1101). Type locality. 



Atlantis station 3401; north of Cayo Coco, Camagucy Province, Cuba (lat. 22°36' 

 N., long. 78°19' W.); 429 meters; April 28, 1939 [11. L. Clark, 1941]. 



Atlantis station 3404; north of Cayo Coco, Camaguey Province, Cuba (lat. 22°37' 

 N., long. 78°23'30" W.); 393 meters; April 28, 1939 [H. L. Clark, 1941]. 



Atlantis station 3405; north of Caj-o Coco, Camaguey Province, Cuba (lat. 22°38' 

 N., long. 78°25' W.); 429 meters; April 28, 1939 [H. L. Clark, 1941]. 



Atlantis station 3412; north of Puuta Alegre, Camaguey Province, Cuba (lat. 

 22°49' N., long. 78°48' W.) ; 429 meters; April 29, 1939 [A. H. Clark, 1940; H. L. Clark, 

 1941] (9, M.C.Z.). 



Atlantis station 3413; north of Punta Alegre, Camaguey Province, Cuba (lat. 

 22°50' N., long. 78°50' W.); 393 meters; April 29, 1939 [IL L. Clark, 1941]. 



Atlantis station 3416; north of Punta Alegre, Camaguey Province, Cuba (lat. 

 22°50' N., long. 78°55' W.); 366 meters; AprQ 30, 1939 [H. L. Clark, 1941]. 



Altantis station 3421; northeast of Caibarien, Santa Clara Province, Cuba Qat. 

 22°49' N., long. 79°07' W.); 429 meters; April 30, 1939 [H. L. Clark, 1941]. 



Atlantis station 3427; north of Caibarien, Santa Clara Province, Cuba (lat. 

 22°52'30" N., long. 79°20' W.); 439 meters; May 1, 1939 [H. L. Clark, 1941]. 



Doubtful locality. — Blake station 262; off Grenada (lat. 12°01'45" N., long. 

 61°47'25" W.); 168 meters; bottom temperature 16.66° C; fine sand; March 1, 1879 

 [Hartlaub, 1912; A. H. Clark, 1940]. 



Geographical range. — Coasts of Cuba; ?Grenada. 



Bathymetrical range. — From 366 to 530 meters. 



History. — In his report on the comatulids of the Blake Expedition published in 

 1912 Dr. Clemens Hartlaub described and figured Antedon liarthra from a much-broken 

 specimen from station 262. It is possible that Antedon liarthra represents the present 

 species, but there is no definite proof of this. 



Caryoinetra atlantidis was described and figured in 1940 from a specimen from 

 Atlantis station 3394. In addition to the type, two other specimens from station 3394 

 were recorded as well as four from station 3391 and nine from station 3412, and notes 

 on them were given. In 1941 Dr. Hubert Lyman Clark recorded this species from 

 fifteen additional stations and gave brief notes on them. 



Subfamily ISOMETRINAE 



Isometrinae A. H. Clark, Journ. Washington Acad. Sci., vol. 7, No. 5, 1917, p. 127 (includes only 

 Isometra); No. 16, p. 504 (in key), p. 510 (Isometra onl.y); Unstalked crinoids of the Siboga- 

 Exped., 1918, p. 196 (in key), p. 239 (includes only Isometra); The Danish Ingolf-Exped., vol. 4, 

 No. 5, Crinoidea, 1923, p. 49 (in key).— Gisl^n, Zool. Bidrag Uppsala, vol. 9, 1924, pp. 91, 232; 

 Ark. Zool., vol. 19, No. 32, 1928, p. 11.— John, Discovery Reports, vol. 18, 1938, pp. 123, 124, 

 174; Rep. B.A.N.Z. Antarctic Res. Exped. 1929-31, ser. B, vol. 4, pt. 6, 1939, p. 206.— Gisl£n, 

 Rep. Swedish Deep Sea Exped., vol. 2, Zool., No. 4, 1951, p. 55. 



Diagnosis [by A.M.C.]. — -A subfamily of Antedonidae in wiiich the cirrus sockets 

 are arranged in altcrnatmg rows on the conical to hemispherical centrodorsal; the 

 cirri are stout and well-developed, the peripheral ones with usually 30 to 40 segments, 



