lO SiDEBOTTOM, Forainiiiifcra from the Island of Delos. 



The test is compressed, elongated, and has the peri- 

 phery rounded. The umbih'cal cavity is deeply sunk, and 

 has a few ver\' fine lines ornamenting its sides. The 

 sutural lines are slightly sunk. This simple Pulvinniina 

 apjjears to belong to the " obloiga " group. Rare. 



Rotalia, Lamarck. 

 *Rotalia beccarii, Linnc, sp. (PI. 4, Fig. 6). 



Rotalina deccarti {hmnc), Williamson ('58), p. 48, pi. 4, 

 figs. 90-92. 



Rotalia beccarii (Linne), Parker and Jones ('65), p. 388, 

 pi. 16, figs. 29, 30. 



R. beccarii (Linne), Brady ('84), p. 704, pi. 107, figs. 



2 ^ 



R. beccarii (Linnc) Goes ('94), p. 99, pi. 16, fig. 811. 

 /\^. beccarii (Linnc), Flint ('99), p. 331, pi. 75, fig. 2. 



Three varieties of this common species are present, 

 one* small, with the outermost whorl consisting of si.x to 

 eight chambers, and a second" variety, much larger, 

 with ten or eleven chambers in the final convolution. 

 The former rather rare, the latter common. In this latter 

 the septal lines are often liiubate and raised. The third* 

 variety, which is very rare {Fig. 6, PL 4), is the largest of 

 the set, and highly decorated with tubercles, and exoge- 

 nous shell-growth. Mr. Millett kindly sent me a couple 

 of examples of this decorated form from the Pliocene of 

 St. Erth, and they agree well with those from Delos. He 

 writes me that he had listed them as Rotalia punctato- 

 granosa, Seguenza, but now considers them to be a variety 

 of R. beccarii, and also states that as far as he knows this 

 is its first recorded occurrence in the recent condition. 

 It is not quite so rare off Palermf). 



