6 SiDEBOTTOM, Foramifiifera fro7n the Island of Delos, 



*Spiroloculina grata, Terquem. 

 Spiroloculina grata (Terq.), Brady ('84), p. 155, pi. 10,. 

 figs. 16, 17, 22, 23. 



This pretty form is well represented. Frequent. 



Spiroloculina canaliculata, d'Orbigny. 



Spiroloculina canaliculata^ d'Orbigny ('46), p. 269, figs. 

 10-12. 



Typical specimens are rare ; specimens with only the 

 last chamber channelled are frequent. 



Spiroloculina acutimargo, Brady. 



Spiroloculina acutimargo, Brady ('84), p. 154, pi. lO^ 

 figs. 12-15. S. acutimargo (Brady), Balk will and Wright 

 ('85), p. 323, fig. I «, b, c. 



Two only found ; they come nearest to the one 

 figured by Brady ('84), pi. 10, fig. 14, but they are a little 

 more attenuated. Very rare. 



Sigmoilina, Schlumberger. 

 *Sigmoilina tenuis, Czjzek, sp. 



Spiroloculina tenuis (Czj.), Brady ('84), p. 152. pi. 10,. 

 figs. 7-1 1. 



The Delos forms are all carinate, but they have the 

 slight twist in the test, characteristic of the species. Rare. 



*Sigmoilina costata, Schlumberger. 



Sigmo'ilina costata, Schlumberger ('93), p. 69, pi. i,. 

 figs. 51, 52, and text-fig. 4. 



The tests are all of a pale cream colour and strongly 

 ribbed for the size of the specimens. They are more or 

 less rough. Common. 



Sigmoilina ovata. n. sp. (PI. 2, figs. 12, 13 ; Section i). 

 The test in outline is an irregular oval, showing 



