JOUENAL 



OF THE 



ROYAL MICROSCOPICAL SOCIETY 



OCTOBER, 1908. 



TRANSACTIONS OF THE SOCIETY. 



XV. — On Cycloloculina, a Nevj Generic Type of the Foraminifera. 



With a Preliminary Study of the Foraininiferous Deposits 

 and Shore-sands of Selsey Bill. 



By Edward Heron-Allen, F.L.S. F.K.M.S., 

 and Arthur Earland. 



(Read June 17, 1908.) 

 Plate XII. 



Introductory Note by Edward Heron-Allen. 



I opine that if there might be a special heaven for Ehizopodists, it 

 would be one whose leading feature would be a calm sea, in the 

 surface waters of which a record number of living, pelagic Fora- 

 minifera might be gathered in the terminal bottle of a common 

 tow-net. If this may be postulated as the Walhalla of the student 



EXPLANATION OF PLATE XII. 



Fig. 1. — Cycloloculina annulata sp. u*. 1st or discorbine stage, x 9G. Balsam 



mount. 

 „ 2. — Ditto. 2nd or pavonine stage, x 60. Balsam mount. 

 ,, 3. — Ditto. 3rd or annular stage, x 48. Balsam mount. 

 ,, 4. — Ditto. 3rd or annular stage, x 48. Coarse specimen. Opaque mount. 

 ,, 5. — Ditto. 3rd or annular stage (fragment). X 48. Hyaline specimen. 



Opaque mount. To show the crenulated surface of chambers. 

 „ 6. — Ditto. Detail showing spines on septal face of chamber, x 290. 

 ,, 7. — Ditto. Detail showing areolated structure round the tubuli. x 290. 

 ,, 8. — Cycloloculina polygyra sp. n. 3rd or annular stage. x 48. Balsam 



mount. 



Oct. 21st, 1908 2 n 



