8 SiDEBOTTOM, Foraiiiinifera from the Island of Dclos. 



Spirillina vivipara, Ehrenberg, var. carinata, Halkyard. 



(PL 2, fig. 4.) 



Spirillina vivipara, Ehrenberg, var. carinata, Halk- 

 yard ('89), p. 69, pi. 2, fig. 6. 



Mr. Halkyard's description of this variety runs as 

 follows : " It differs from the type species in having the 

 periphery carinated, though the keel is not entire, but 

 irregularly crenated. This, however, may be caused by 

 accidental fracture. The tube is not closely coiled, but 

 each convolution is applied to the carina of the previous 

 one, the carina being repaired and strengthened so that 

 it is now entire." Mr. Halkyard found it at St. Brelade's 

 Bay, in Jersey, one of the Channel Islands. The Delos 

 specimens, four in number, are identical with the one 

 figured by Mr. Halkyard in the above reference. Very 

 rare. 



Spirillina vivipara, Ehrenberg, var. complanata, Jones 

 and others, var. (PI. 2, fig. 5). 



Spirillina vivipara, Ehrenberg, var. complanata,' ]ox\cs, 

 and others ('96), p. 290, pi. 3, figs. 20-22. 



Unfortunately I lost this specimen before the com- 

 pletion of the drawings. Mr. Millett, however, had seen 

 it, and considered it to be near to the " Crag" specimen 

 referred to above. 



Spirillina decorata, Brady, var. (PL 2, fig. 6). 

 Spirillina decorata, Brady ('84), p. 633, pi. 85, figs. 22-25. 

 One example only was found ; it answers fairly well 

 to Brady's description of 6". decorata, excepting that the 

 peripheral edge is serrate. I have found this serrate 

 variety in material from the Challenger Station, 185, off 

 Raine Island, the test being minute, as is the case with 



