428 



THE VOYAGE OF H.M.S. CHALLENGER. 



GEOGRAPHICAL DISTRIBUTION OF THE CHALLENGER 

 HEXACTINELLIDA. 



After the above brief summary of the most important facts in regard to distribution 

 known before, and independently of the Challenger Expedition, I may proceed to an 

 account of the results which are now available. 



I shall first give a tabular survey of aU those stations of the Challenger Expedition 

 at which Hexactinellida were obtained, including notes of the distribution in depth, the 

 nature of the ground, and the number of specimens. The stations are arranged 

 according to the route of the expedition, and I have also noted the distribution on the 

 map accompanying this Report, in such a way that the marks indicate at least 

 the great division, and as a rule the family to which the species in question belong. 



TABLE III. — List of Hexactinellida collected during the Challenger 

 Expedition, arranged according to Stations. 



