THE SH0RE-SAX1) AT BOGXOli, SUSSEX. 223 



of the septa in Textularia and Verneuilina, and I think it 

 probably occurs in all cases of advanced plastogamy. 



I was so fortunate as to find two specimens in which plasto- 

 gamy had taken place, with subsequent separation of the parents, 

 and in which the young shells still remained inside the cavity. 

 One of these was unfortunately lost again, but I have the other, 

 and the accompanying figure is reproduced from a careful 



drawing made by my cousin, Mr. J. A. Lovegrove. It will be 

 observed that the young specimens are monothalamous. They 

 are extremely delicate and hyaline, and appear to be imbedded 

 in sarcode. 



Discorbina wrightii, Brady. 

 Discorbina ivrightii, Brady, 1881, Denkschr. d. k. Ah. Wiss. Wien T 



vol. xliii., p. 104, pi. ii., fig. 6 ; Ann. 

 J fag. Nat. Hist., ser. 5, vol. viii., p. 413 r 

 pi. xxi., fig. 6. 

 ,, „ Brady, 1887, Synopsis British Recent Fora- 



minifera. 

 Common, but probably less so than the last species. 



Discorbina berth eloti, cl'Orbigny, sp. 



Rosalina bertJieloti, d'Orbigny, 1839, For am. Canaries, p. 135, 



pi. i., figs. 28—30. 



Discorbina bertheloti, Brady, 1884, Report " Challenger" p. 650, 



pi. lxxxix., figs. 10 — 12. 



„ ,, Brady, 1887, Synopsis British Recent Fora- 



niinifera. 

 Rare. 



