340 BULLETIN 82, UNITED STATES NATIONAL MUSEUM 



Tuticorin, Madras Presidency [Bell, 1888; A. H. Clark, 1912, 1913, 1914] (1, 



B. M.). 



Ceylon Pearl Oyster Fisheries station LIV; Gulf of Manaar; in the northern 

 part of the Gulf of Manaar, south of Adams Bridge; 7-73 meters; bottom varied, 

 from sand to livmg coral [Chadwick, 1904]. 



Ceylon Pearl Oyster Fisheries station LXVIII; west coast of Ceylon; from off 

 Coppeliiddi southward to Navakaddu Paar; 15-34 meters; bottom nullipores {Litho- 

 thamnion fruiticulosum) , coral, and Orbitolites sand [Chadwick, 1904]. 



Galle, southwestern Ceylon [A. H. Clark, 1912] (17, U.S.N.M., 35418 [original 

 No. 25D], 35419 [original No. 18D], 35422 [original No. 2D], 35423 [original No. 

 20D], 35425 [origmal No. 28D], 35427 [original No. 16D], 35428 [original No. 31D], 

 36257; I. M.). 



Ceylon [Bell, 1887, 1888; P. H. Carpenter, 1888; de Loriol, 1893; Hartlaub, 1912; 

 A. H. Clark, 1911, 1912, 1913, 1914] (14, B. M.). 



Ceylon [Bell, 1888; P. H. Carpenter, 1888; de Loriol, 1893; Hartlaub, 1912; 

 A. H. Clark, 1911, 1912, 1913, 1914] (3, B. M.). 



Ceylon; Doctor Sarasin [Reichensperger, 1913]. 



Ceylon [H. L. Clark, 1915] (1, Colombo Mus.). 



Indian Ocean [A. H. Clark, 1911] (1, L. M.). 



Geographical range. — Coast of Travancore State, southwestern India, the Gulf of 

 Manaar, and the western and southwestern coasts of Ceylon. 



Baihymetric range. — From the shore line down to 15 (?73) meters. 



History. — This form was first mentioned by Prof. F. Jeffrey Bell, who in 1887 

 recorded specimens from Ceylon as Antedon carinata and also under the name of 

 A. adeonae. In 1888 he recorded Antedon adeonae from Ceylon and from Tuticorin 

 in the Madras Presidency of India ; his men tion of Antedon carinata from the Bay of 

 Bengal is based upon specimens of Tropiometra indica from Ceylon, but this species 

 is not known to occur on the eastern side of the island. 



In the Challenger report upon the comatulids published m 1888 Dr. P. H. Car- 

 penter included specimens of this form from Ceylon under the name Antedon carinata. 



In his report on the Crinoidea collected by Professor Sir William Herdman in 

 coimection with the pearl oyster fisheries investigations in Ceylon in 1902, which 

 was published in 1904, Herbert Clifton Chadwick recorded one specimen from station 

 LIV and several from station LXVIII on the west coast of Ceylon and in the Gulf 

 of Manaar under the name of Antedon carinata. 



In my first revision of the old genus Antedon published in 1907, I included this 

 form in Tropiometra carinata as imderstood by me. In my memoir on the Recent 

 crinoids of the coasts of Africa published in 1911, I included this form under a new 

 species, Tropiometra encrinus (see p. 333), which I said appeared to be generally rare, 

 though common about Ceylon. In my paper on the crinoids of the Leyden Museum 

 published in 1911, 1 recorded a specimen of Tropiometra sp., from the "Indian Ocean" 

 and gave notes on it. I said that the brachial carination is moderate as in the "South 

 Pacific" specimens {=carinata; see page 319). I added that this specimen appears 

 to belong to an undescribed species which occurs westward from the Indian Ocean 

 to the South Sea Islands; it is characterized by having the cirri small and weak, 

 though otherwise as in T. picta {=carinata) of the West Indies and Brazil. The 



