ECHINODERMS COLLECTED BY THE " HUXLEY," AUGUST, 1906. 537 



Although collected three years ago, preserved m spirit, and dried, 

 the red patches on the test are quite clear in the larger specimens. 



CLYPEASTROIDEA. 



Fibularidae. 

 Echinocyamus pusillus, 0. Y. INI idler. 

 Station XII. 246 fathoms. 2 specimens. 



SPATANGOIDEA. 



Spatangidae. 



Spatangus purpureas (0. F. Miiller). 



Station II. 2 specimens. 



Station XII. 246 fathoms. 2 specimens. 



Spatangus Raschi (Loven). 

 Station IX. 240 fatlioms. 30 specimens. 



Echinocardium pennatifidum, Norman. 

 Station XI. 146 fathoms. 4 specimens. 



HOLOTHUROIDEA. 



ASPIDOCHIROTA. 



Fam. HOLOTHURIID-ffi. 



Stichopus tremulus. Gunnerus (Ostergren). 

 Sticliopns Ricluirdi. Herouard. 

 Sticho'pus Richardi. R. Perrier, 



Holothuria tremula. Gunnerus. 1767. Diiben and Koren, Sars, 

 Theel, Jeffrey Bell. 



Holothuria elegans. F. 0. Miiller, Jiiger, Brandt. 



Station IX. 240 fathoms. 7 specimens. 

 Station XII. 246 fathoms. 1 specimen. 



Up to 1896 this species was regarded as a true Holothurian, possess- 

 ing only one bundle of genital tubes. In 1896, Ostergren (9) demon- 

 strated that it has two bundles of genital tubes, and consequently, as a 

 true Stichopus, should be called Stichopus tremvlus. 



Pi. Perrier, in his examination of the Holothurians of the Talisman 



