24 SiDEBOTTOM, Foraminifera fj'oiH the Bay of Palermo. 



Orbulina, d'Orbigny. • 



Orbtilina imwersa, d'Orbigny. 



Besides the usual typical form, there is one specimen 

 which is double, the G. bilobata of d'Orbigny. 



ROTALID/E. 



Spirillinin^. 



Spirillina, Ehrenberg. 



Spirillina vivipara, Ehrenberg. 



The largest examples on the slide are like the one 

 figured in the Deles paper (1908), fig. i, pi. 2. The 

 others are represented by Fig. 13, PI. i. The Palermo 

 examples of this form are composed of only two con- 

 volutions. 



Spirillina obconica^ Brady. 



This is a rare form. There are three specimens of 

 this small and delicate species. 'The swollen commence- 

 ment of the tube, referred to by Brady in the Challenger 

 Report, is well marked, especially in one of the tests, all 

 three of which consist of about three and a half con- 

 volutions. 



ROTALIN/E. 



Patellina, Williamson. 



Patellina corrugata^ Williamson. 

 Frequent. 



Cymbalopora, Hagenow. 



Cymbalopora poeyi, d'Orbigny, var. 



The tests are of the variety figured by Brady in the 

 Challenger Report, pi. 102, fig. 14. 



