A MONOGRAPH OF THE EXISTING CRINOIDS 315 



colony living here must be an isolated one, originating from larvae carried thither by 

 the currents, not in direct connection with the main habitat of the species in American 

 waters, which should probably be sought to the south of the Orinoco and Amazon 

 Rivers. He recalled that we know from the work of von Graff that individuals living 

 there are infested with myzostomes, for he recorded Myzostomum gigas from speci- 

 mens dredged by the Challenger off Bahia. Alortensen was inchned to doubt the 

 correctness of the identification of the myzostomes from Bahia, for this species is 

 otherwise known only from the arctic Heliometra glacialis. 



Localities.— 'M&vme Investigations in South Africa; Rocky Bank, False Bay, 

 Cape of Good Hope; 31^9 meters; rocks; reference No. 15610 [Bell, 1905; A. H. 

 Clark, 1913] (2, B.M.). v.' :! 



Marine Investigations in South Africa; Rocky Bank, False Bay; 31 meters; rock 

 and coral; reference Nos. 15597 and 1559S [Bell, 1905; A. H. Clark, 1913] (3, B. M.). 



Rocky Bank, False Bay, Cape of Good Hope [A. H. Clark, 1911]. This refers to 

 the two preceding locahties. 



Simons Town, False Bay, Cape of Good Hope; Gauss, July 2, 1903 [A. H. Clark, 

 1915] (l,Beri. Mus.). 



Dr. Th. Mortensen's station 66; False Bay; 31 meters; stones; December 19, 1929 

 [Gisl6n, 1938]. 



Cape of Good Hope [A. H. Clark, 1913] (1, B. M.). 



Cape of Good Hope station 4801 (2 [cotypes of Antedon capensis], M. C. Z., 317). 



Marine Investigations in South Africa; off Algoa Bay, close to Riy Bank (lat. 

 33°58' S., long. 25°51'30" E.); 46 meters; dark sand, black specks, and rocks; refer- 

 ence No. 50SB [Bell, 1905; A. H. Clark, 1911]. 



Itongazi River, Natal, bearing N. W. Ya W., 3 milesj distant; 46j meters; sand and 

 stones; P. F. 12405-c [H. L. Clark, 1923]. 



Tugela River mouth bearing N. W. by W., 3}j miles distant; 26 meters; rocks; 

 reference No. 11386 [Bell, 1905; A. H. Clark, 1911]. 



Marine Investigations in South Africa; Durnford Point, Natal, bearing N. E. by 

 E., 9 miles distant; 25 meters; sand and shell; reference No. 11801 [Bell, 1905; A. H. 

 Clark, 1911, 1913] (25, B.M.). 



Marine Investigations in South Africa; station 96 [A. H. Clark, 1913] (2, B. ^^.). 



Marine Investigations in South Africa; stations 97, 98, 155 [A. H. Clark, 1913] 

 (2,B.M.). 



Marine Investigations in South Africa; station 160 [A. H. Clark, 1913] (2, B. M.). 



Marine Investigations in South Africa; station 165 [A. II. Clark, 1913] (1, B. M.). 



South Africa [A. H. Clark, 1909, 1914]. This refers to previous records from south 

 and southeastern Africa. 



Delagoa Bay, Portuguese East Africa; K. H. Barnard, October, 1912 [II. L. 

 Clark, 1923]. 



Mozambique; low tide; K. H. Barnard; November 1912 [H. L. Clark, 1923] 

 (1,M.C.Z.,748). 



Portuguese East Africa [Gisl^n, 1933]. 



Pieter Faiire stations 2001 and 2012 ; Portuguese East Africa; ?1925 [Gisl6n, 1938]. 



Zanzibar; Count von der Decken [von Martens, 1869; A. H. Clark, 1912, 1914] 

 (l,Berl. Mus., 1636). 



