Notes on Eley's Foraminifera. 125 



shows the body (sarcode) of the animal without the shell. Fig. 44 

 is the empty shell, as a transparent object ; the curved edge of the 

 shell is darker, being seen vertically, and falsely appears like a 

 thickened margin. A membranous oval pedunculated sac is attached 

 to one of the chambers ; whether this is parasitical, or belongs to the 

 animal as a germ-sac, is unknown. Such a sac has been observed 

 in other instances, recent and fossil, by Ehrenberg. Fig. 45 re- 

 presents a BoUvina punctata, seen by transmitted light. Here also 

 the vertical thickness of the edge is less transparent than the flat 

 walls of the shell, and at first sight looks like a fringed border, but 

 the author fully explains it at p. 203. 



Mr. Eley's little book — whence these abstracts have been taken — 

 has been to many an excellent introduction to the study of geology, 

 and contains useful and well-arranged interesting information about 

 alluvium, Post-tertiary, Tertiary, and some Cretaceous strata. The 

 appendix is devoted to a natural history consideration of the Microzoa, 

 Sponges, and other fossils of the Chalk, and is illustrated by several 

 plates. PL i. gives Inoceramus prisms and various Sponge Spicules ; 

 plates ii. to ix. contain the Foraminifera found in the Chalk and its 

 flint (pseudomorphic chalk) ; pi. x. has some recent Foraminifera and 

 a Xanthid and a Fish-scale from the Chalk ; plates xi. and xii. repre- 

 sent miscellaneous Chalk fossils, chiefly in flint. 



We may add that the flint casts of PlanorbuUna ammonoides, above 

 mentioned (pi. ii. figs. 8 and 4), are comparable with the exquisitely 

 engraved figures in Mantell's plate xxi. "Philos. Transact." 1846, 

 where the Molluskite casts and the shells of small Flanorhulince are 

 carefully drawn. These belong to varieties between Fl. ammonoides 

 and PI. ariminensis, both Cretaceous and recent. Compare also fig. 

 29, in pi. ii. of Prof. Williamson's memoir " On some miscroscopical 

 objects from the Levant," etc., in the Manchester Lit. Phil. Soc. 

 Mem., vol. viii., 1847. This is the early (central) portion of Fl. 

 Mediterranensis. 



Foraminifera from the Chalh of the South-east of England, figured 

 hy the Rev. Henry Eley, 1856. 



1. Nodosaria raphanus, Linn. 



2. var. Zippei, Eeuss. 



3. Bentalina communis, D'Orb. 



4. Frondicularia Archiaciana, D'Orb. 



5. anffulosa, D'Orb. var. 



6. Flabellina rugosa, D'Orb. 



> 1. NODOSARINA. 



7. Cristellaria rotulata, Lam. 



8. ovalis, Eeuss. 



9. Polymorphina, sp. P '2. PoLTMORPHiNA. 



10. BuUmina variabilis, D'Orb. 



11. intermedia, Eeuss. 



12. BoUvina punctata, D'Orb. ? 

 13. obsoleta, Eley. 



14. Virgulina paradoxa, Ebrenb. 



15. Textilaria globulosa, Ebrenb. 

 16. turris, D'Orb. 



17. trochus, D'Orb. 



18. Spiiroplecta rosula, Ehrenb. 



19. Gaudryina rugosa, D'Orb. 



20. Verneuilina triquetra, Miinst. 

 21. yar. 



> 3. BULIMINA. 



>• 4. Textharia. 



