352 



ME. HENET B. BIGELOW— BISCATAN PLANKTON : 



marginal surfaces characteristic of V. spinosa and well figured by Haeckel (1888). The 

 similarity between them and the Pacific series of spinosa is a further reason for identi- 

 fying them provisionally as that species, V. spinosa has been previously recorded only 

 from off the coast of Brazil (Keferstein and Ehlers) and from the South Atlantic (37° 3' S., 

 44° 17' W., Haeckel). 



RHIZOPHYSALI^. 



A single fragmentary rhizophysid was taken at Station 24/', surface ; probably on the 

 wire. But unfortunately it consisted only of three fragments of the stem, without any of 

 the appendages, and therefore cannot be identified, even generically. 



BATHYMETRIC DISTRIBUTION. 



The number of specimens of each species sent to me from each of the various horizons 

 is given in the accompanying table [in the case of the diphyids only the anterior 

 nectophores are included, to prevent duplication]. 



(NOTE. — The smaller Calycophorae are very delicate ; they were peculiarly often caught 

 up in clots of plankton, caused by the branching spines of Phseodarian Radiolaria or 

 by silk threads from the tow-net, from which they could only be released — if at all 



m 



