688 MESSES. E. HERON-ALLEN AND A. EAELAND ON THE 



In the Brady collections at Cambridge there is a slide labelled C. humilis Brady, 

 containing specimens of the very depressed type which occurs in this material, both 

 sessile and detached. The Cambridge specimens were all detached. Brady did not 

 apparently publish any description or figure of this form, which is certainly not worth 

 separating as a species, 



336. Cymbalopora tabellEeformis Brady. 



Cymbahpora tabellceformis Bradj^j 1884, FC. p. 637, pi. cii. figs. 15-18. 

 „ „ Egger, 1893, FG. p. 382, pi. xviii. figs. 54., 55. 



„ „ Millett, 1898, etc., FM. 1903, p. 697. 



Chapman, 1900, FLF. p. 189. 



11 Stations. 



Very generally distributed, but nowhere in such profusion as its closely allied form 

 C. poeyi. The points of distinction between C. tahellmformis and C. poeyi are some- 

 what unsatisfactory. Brady's chief distinctive feature is the difference of the aperture, 

 which, in C. foeyi, is described as an orifice opening into the umbilical vestibule, and 

 in C. tahellmformis as rows of siitural pores only. But many unquestionable speci- 

 mens of G. poeyi have marginal or sutural pores in addition to the umbilical arched 

 aperture. A more constant specific feature lies in the fact that in C. tabellce- 

 formis each chamber forms a perfect curve running from the flat superior face, on 

 which all the chambers are exposed (though often obscured by shell-thickening), 

 to the umbilical recess, in the manner, as we have elsewhere pointed out, of the 

 tuber of the common garden Eanunculus (H.-A. 1915, RPF. p. 258, pi. 18. fig. 53). 



All the specimens observed were free-growing, except at Stn. 1, where numerous 

 individuals were found encrypted in fragments of molluscau shells. This phenomenon, 

 which is hitherto unknown in the habits of any Foraminifer, has been made the 

 subject of a special study in the paper above referred to, which has been published 

 elsewhere. It is probable that a large number of the free specimens found at other 

 Stns. have original) y been encrypted in this manner, as they agree in all essential 

 features with the specimens which we have removed from such crypts. They are 

 nearly all of regular circular outline, very few approaching to the oval outline of 

 Brady's type. 



337. Cymbalopora bulloides (d'Orbigny). 



Rosalina bulloides d'Orbigny, 1839, FC. p. 98, pi. iii. figs. 2-5. 

 Cymbalopoi-a bulloides Carpenter, Parker, & Jones, 1862, IF. p. 216. 

 Tretomphalus bulloides Mobius, 1880, FM. p. 98, pi. x. figs. 6-9. 

 Cymbalopora bulloides Brady, 1884, FC. p. 638, pi. cii. figs. 7-12. 

 Murray, 1897, PF. p. 20, fig. 3. 

 „ Chapman, 1900, FLF. p. 189. 

 „ „ Earland, 1902, " On Cymbalopora bulloides (d'O.) and its Internal 



Structures,'^ Journ. Quekett Micr. Club, ser. 2, vol. viii. pp. 309- 

 322, pi. 16. 



