316 Transactions of the Society. 



28. MiUolina agglutinans d'Orbigny sp. 



Quinqueloculina agglutinans d'Orbigny, 1839, Foram. Cuba, p. 168, pi. xii. 



figs. 11-13. 

 MiUolina agglutinans (d'Orbigny) Brady, 1884, Foram. 'Challenger,' p. 180, 



pi. viii. figs. 6, 7. 

 Ditto. (d'Orbigny) Balkwill and Wright, 1885, Trans. B. Irish Acad., vol. 



xxviii. p. 355, pi. xiii. figs. 1-3. 

 Ditto. (d'Orbigny) Brady, 1887, Synopsis British Becent Foraminifera. 



Kecent only. The specimens are of a very fine and even 

 texture. 



29. MiUolina fusca Brady. 



Quinqueloculina fusca Brady, 1870, Ann. Mag. Nat. Hist., ser. 4, vol. vi. 



p. 286, pi. xi. fig. 2. 

 MiUolina fu^cu Brady, 1887, Synopsis British Becent Foraminifera. 

 MiUolina agglutinans (d'Orbigny) Gol ; s, 1894, Arctic and Scandinavian 



Foraminifera, p. 110, pi. xix. figs. 848./', g, h. 

 MiUolina fusca (Brady) Earland, 1905, Journ. Quekett Micr. Club, ser. 2, 



vol ix. No 57, p. 197. 



Kecent only. The specimens occur in considerable numbers, 

 as at Bognor. There is a considerable range in form, both spiro- 

 loculine, quinqueloculine, and hauerine specimens having been 

 observed. 



30. MiUolina alveoliniformis Brady. 



MiUolina alveoliniformis Brady, 1879, Quart. Journ. Micr. Sci., n.s. vol. xix. 



p. 54. 

 Schlumbergerina areniphora Munier-Ohalmas, 1882, Bull. Soc. Geol. France, 



ser. iii. vol. x. p. 425, fig. 

 MiUolina alveoliniformis (Brady) Brady, 1884, Foram. ' Challenger,' p. 181, 



pi. viii. figs. 15-20. 

 Ditto. (Brady) Millett, 1898, Malay Foram., Journ. B. Micr. Soc, p. 510. 



Fossil only. A small number of specimens have been obtained 

 from the detritus underlying the Mixon Bocks piled around the 

 base of the Mixon Beacon, which are to all appearance referable to 

 this species. They have no doubt been derived from the breaking 

 down of the Alveolina limestone, of which these rocks are mainly 

 formed, and it may be noted that thin sections of the Mixon Bocks 

 exhibit numerous individuals with an arrangement of chambers 

 similar to that in recent specimens of the species. M. alveolini- 

 formis has not, so far as we are aware, been recorded in the fossil 

 state, but in the living condition it is essentially a coral-reef type, 

 and may be found in most recent dredgings in which Alveolina 

 occurs. Hence its occurrence in an Alveolina limestone would not 

 be unexpected. 



