Boone, Echinodermata, Cruises of "Eagle" and "Ara," 1921-28 151 



and Malpelo Island, and the Bay of Panama, in depths ranging from 

 331 to 1832 fms. Some of these are deposited in the Museum of 

 Comparative Zoology. 



Distribution : This unusual pelagic holothurian is evidently abun- 

 dant in the eastern tropical Pacific, for in addition to the distribution 

 noted above, thirty-three specimens, taken at ten stations, in depths 

 ranging from surface tow to 300 to 2440 fms., were obtained by the 

 "Albatross" in 1904-05. The "Ara" record adds another station for 

 this species. It is of interest to note that the extensive dredgings of 

 the "Siboga" did not obtain a single record of the species in the 

 Indo-Pacifie. 



Material examined : Three adult specimens in very good condition, 

 collected when the dredge was down 300 fms., bottom depth 1400 fms., 

 50 miles S. W. of Cape Malo, Panama, March, 1928, by the "Ara," 

 Cat. no. 227. 



Color : In life this holothurian is a delicate fuchsia red with shad- 

 ings of purplish. 



Discussion: All the "Ara" specimens are adult and conform with 

 Ludwig's very thorough description of the animal. Exquisite color 

 and detail illustrations of the species are given by Ludwig, in volume 

 17, part 3, plate 19, of the Memoirs of the Museum of Comparative 

 Zoology, 1894. 



References: Pelagothuria natatrix Ludwig, Bull. Mus. Comp. Zool., 

 vol. 24, p. Ill, 1893; Mem. Mus. Comp. Zool., vol. 17, p. 114, 

 pi. 19, 1894 (color plate).— H. L. Clark, ibid,vol. 39, p. 132, 1920. 



Order: ASPIDOCHIROTA. 



Family: STICHOPODIDAE. 



Genus: STICHOPUS Brandt. 

 Stichopus regalis (Cuvier). 



Plate 97. 



Type: Cuvier 's type came from the Mediterranean; its depository 

 is not stated. 



Distribution : This is essentially a Mediterranean species which is 

 also found on the coasts of the Hispanic Peninsula, in the Bay of 

 Biscay, and in British waters off the west coast of Ireland. It also is 

 found at the Canaries. Bathymetric occurrence : 10 to 1029 fms. 



