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Transactions of the Society. 
illustrate our remarks by a series of plates generously granted to us 
by the Royal Microscopical Society. 
The material contributing to this paper has been derived from six 
sources. 
(1) A small collection made by C. D. Sherborn from material 
carefully selected from the softer band of the Red Chalk at Hun- 
stanton by Mrs. R. E. May. These specimens are of minute size. 
(2) A large collection made by H. W. Burrows, from material 
obtained from the upper portion of the Red Chalk at Speeton, kindly 
Plate IX. — continued. 
Fig. 
21. — Nodosaria calamorplia Reuss X 50. 
22. „ sp. x 50. 
23. „ limbata d’Orb. x 50. 
24. „ obscura Reuss x 40. 
25 a, b. „ prismatica Reuss x 50. 
26. „ ( [Dentalina ) soluta Reuss 
X 100. 
27. „ ,, communis d'Orb. x 50. 
Fig. 
28. — ■ Nodosaria ( Dentalina ) brevis d’Orb. 
X 50. 
29. „ „ filiformis d’Orb. x 50. 
30. „ „ marginulinoides Reuss X 50. 
31. „ „ mucronata Neugeboren 
X 50. 
32. ,, „ dbnormis Reuss x 75. 
33. — Marginulina inxqualis Reuss X 50. 
Fig. 
1. — Marginulina glabra d’Orb. X 50. 
2. „ variabilis Neugeboren 
X 50. 
3a, b. — Lingulina carinata d’Orb. x 50. 
4. — Frondicularia biformis Marsson x 50. 
5. ,, gaultina Reuss x 25. 
6a, 6. „ Archiaciana d’Orb. x 50. 
7a, 6. — Rhabdogonium tricarinatum 
(d’Orb.) x 50. 
8a, b „ minutum Reuss 
x 75. 
9. — Vaginulina eurynota Reuss x 25. 
Plate X. 
Fig. 
10, 11, 12, 13. — Vaginulina recta Reuss 
X 50. 
14, 15. „ arguta Reuss x 50. 
16. „ legumcn (Linn.) x 75. 
,, sp. (not figured). 
17a, b (and! Cristellaria rotulata (Lam.) 
XI. 7) / x 50. 
18a, b. „ cultrata (Montf.) X 50. 
19a, 6, 21. „ gibba d’Orb. x 50. 
20. „ italica (Defr.) x 50. 
^XI^S)} ” variabilis Reuss x 50. 
Plate XT. 
Fig. 
1. — Cristellaria lata Reuss x 50. 
2. „ multiseptata (F. & M.) 
x 50. 
3. 4. „ crepidula (F. & M.) x 50. 
5a, b. „ Marckii Reuss x 50. 
6. „ cymboides d’Orb. x 50. 
9, 10. — Polymorp/iina lactea (W. & J.) 
X 50. 
11. „ communis d’Orb. x 50. 
12, 13. „ amygdaloides Reuss vel 
P. gibba d’Orb. x 50. 
14. h „ horrida Reuss X 75. 
15. „ sp. x 50. 
Uvigerina sp. (not figured), x 50. 
16. — Ramidina aculeata (d’Orb.) X 50. 
Fig. 
17. — Globigerina bulloides (d’Orb.) x 50. 
18a, 6, c. ,, cretacea (d’Orb.) x 50. 
19. „ Linnxana (d’Orb.) x 75. 
Orbulina universa d’Orb. (not 
figured). 
20, 21. — Sphxroidina bulloides d’Orb. x 75. 
22. — Truncatulina variabilis d’Orb. x 50. 
23a, b. — Planorbulina ammonoides (Reuss) 
x 50. 
Pulvinulina Menardii (d’Orb.) (not 
figured). 
24a, b. — Discorbina vel Truncatulina x 50. 
25a, b. — Anomalina gi'osserugosa (Giimb.) 
x 50. 
26a, b. — Polystomella macella (F. & M ) 
x 50. 
(Some of these specimens have been deposited in the Natural History Museum.) 
