Manchester Memoirs, Vol. liii. (1909), No. ^I. 9 



Pulvinulina nitidula, Chaster. (PI. 4, P'ig. 2). 



Pulvimilina nitidula^ Chaster ('92), p. (^^, pi. i, fig. 17. 



Dr. Chaster's description of this pretty little species, 

 which occurs off Southport, Lancashire, runs as follows : 



" Test small, much depressed, highl}' polished ; convo- 

 lutions about two in number, there being seven or eight 

 segments in the last ; superior surface slightly convex ; 

 sutures not depressed ; inferior surface concave ; aperture 

 large and oblique ; periphery acute. Diameter, "125 mm. 

 The test is so thin that the sutures on the inferior surface 

 are seen through the shell, and give it a pseudo-Cassiduline 

 appearance. Shore mud and in shallow water. Very 

 rare." 



The tests from Delos are quite typical. I have also 

 three specimens from the coast of Iceland. Rather rare. 



Pulvinulina globosa, n. sp. (PI. 4, Fig. 3). 



Test clear and delicate, composed of three convolu- 

 tions, made up of about thirteen inflated chambers, conse- 

 quently the sutures are deeply sunk. The aperture 

 appears to be concealed in the deeply sunk umbilical 

 region b}' granular siiell growth. The final convolution 

 consists of five chambers, and these are adorned on the 

 inner surface by very fine lines, radiating from the umbi- 

 licus. The test is very smooth, and finely perforated, and 

 of an irregular globular shape. 



About ten specimens were found of this minute species. 

 The one figured is the largest of the set. Very rare. 



Pulvinulina simplex, n. sp. (PI. 4, Figs. 4, 5). 



The test is transparent, and consists of four, five, or 

 six segments, having generally only four peripheral seg- 

 ments. The initial chamber is comparatively large. 



