Os^ 



THE VOYAGE OF H.M.S. CHALLENGER. 



belknapi, from the North Pacific, hit, 53° 8' N., long. 171" 19' W., 1006 fathoms, 

 black sand and shells, bottom temperature 35°"5 F. We are now in a position to state 

 that Leptochitoii alveolus is found in the North Pacific at great depths as far south 

 as lat. 16° 42' N. 



"Placiphom sctiger, King, was found at a depth of 345 fathoms, blue mud, bottom 

 temperature 46°, Station 306a ; and Eiqdaciphora simplex, Carp. MS., was collected 

 on the shore, and dredged from 110 fathoms at Tristan da Cunha." 



