Manchester Memoirs, Vol. Ixii. (19 17) 123 



309. Pulvinulina punctulata, (d'Orbigny.) 



Rotalia punctulata, d'Orbigny, 1826, Ann. Sci. Nat. vol. VII, 



p. 273, No. 25. 

 Pulvinulina punctulata, Brady, 1884, Chall. Rep. vol. IX, p. 685, 



pi. CIV, fig. 17, a, b, c. 



Rare. A few damaged specimens found in a sample of 

 Marl taken from about the middle of the beds (No. 5.) 



310. Pulvinulina favus, Brady. 

 Pulvinulina favus, Brady, 1877, Geol. Mag. Dec. II, vol IV., 



P- 535, n o figure. 

 Pulvinulina favus, Brady, 1884, Chall. Rep. vol. IX, p. 701, 



pi. CIV, figs. 12-16. 



Rare. The examples found are small and the peripheral 

 edge is not obtuse as in the specimens figured by Brady, but 

 is provided with a thin keel. The areolation also is somewhat 

 irregular. Most frequent in Gatherings 7 and 8. 



(The specimens differ considerably from the Challenger 

 types. The numerous recent specimens which we have seen are 

 all keelless and with a rounded periphery, and the aperture is 

 prominent and on the median line. In the Biarritz fossils there 

 is always a sharp peripheral edge, sometimes a sharp keel. The 

 aperture is always inconspicuous and situated on the inferior 

 surface. The ornamentation is also more abundant and delicate 

 in the fossils.) 



311. Pulvinulina schreibersii, (d'Orbigny.) 



Rotalina schreibersii, d'Orbigny, 1846, Foram. Foss. Vienne, 



p. 154, pi. VIII, figs. 4-6. 

 Pulvinulina schreibersii, Brady, 1884, Chall. Rep , p. 697, pi. 



CXV, fig. 1. 



Not rare. The specimens noted are well grown and typical 

 and were chiefly found in the upper beds. Though the species 

 is probably present in the lowest beds, it does not attain its best 

 development or growth until the very topmost layers of the clay. 



312. Pulvinulina procera, Brady. 



Pulvinulina procera, Bradv. 1881, Quart. Journ. Micr. Soc, vol. 



XXI, N.S., p. 66, (no figure). 

 Pulvinulina procera, Brady, 1884, Chall. Rep., vol. IX, p. 698, 



pi. CV, fig. 7, a, b, c. 



Very rare. Three small examples found in three separate 

 Gatherings, 2-4-5, (1893.) 



