74 



THE VOYAGE OF H.M.S. CHALLENGER. 



bottom temperature, 0"3° C. ; globigerina ooze. One specimen. Station 232. May 12, 

 1875. Lat. 35° 11' N., long. 139° 28' E. Depth, 345 fathoms; bottom temperature, 

 5 - 0° C. ; sandy mud. One incomplete specimen. Station 300. December 17, 1875. 

 Lat. 33° 42' S., long 78° 18' W. Depth, 1375 fathoms; bottom temperature, 1-5° C. ; 

 globigerina ooze. A great number of specimens. 



The individuals belonging to this species vary greatly in size as well as in the number 

 of pedicels and processes, and in order to give an idea of this variation I have composed 

 the following table : — 



Contrary to the condition inDeima and Oneiro'phanta the body-wall is here very thin, 

 soft, and pliable ; hence the body of this species has lost its original form greatly during 

 preservation in alcohol. The body must have been more or less fusiform, equally tapering 

 towards each extremity; this is best proved by filling the peritoneal cavity with alcohol or 

 air, and thus extending the perisoma. The dorsal surface is extremely convex, while the 

 ventral one is but slightly so. The mouth is more or less strongly inclined towards the 

 ventral surface, and the anus, which is strikingly large, is almost terminal or indistinctly 

 turned upwards. As the above table indicates, the number of pedicels and processes does 



1 All measurements are given in millimetres. 



5 As the individuals are rather contracted, it is impossible to tell the breadth of the body exactly, wherefore I 

 have generally omitted it. 



