104 THE FOEAMINIFERA 



EXPLANATION OF PLATE 4. 



A. Cornusjnra involvens, Keuss. x 30. 



B. h. Penero^jlis arietinus, Batsch sp. : h, oral aspect. x 20. 



C. Peneroplis planatus, F. and ]M. sp. x 20. 



D. Peneroplis {Moiialysidium) Sollasi, Chapman. x 50. 



E. p. Orbici(linaadunca,F. and M. sp. : e, half-section of a fragment 

 of test showing chamberlets. E x 13, e x 32. 



F, /. Orhitolites complanata. Lam. (yonng specimens): /, transverse 

 and vertical sections (after Carpenter). F x 30, /x 36. 



G,.9. Alveolina Boscii, Defr. sp. : g, transverse section (after Brady). 

 xl5. 



H, Keramosplicera Murrayi, Brady, x 7. 



