528 Transactions of the Society. 



margin broad and inflated ; chambers few in number, triangular, 

 radiating from a point at the aboral extremity of the test. Sutures 

 obscure ; surface covered with costas parallel with the sutures. 

 Aperture in a produced neck. Length 0*47 mm. 



This is a passage form from Vaginulina to Cristellaria and is 

 interesting as being a survival from the mesozoic period. In the 

 lias and more especially in the oolite, types similar in character 

 were extremely abundant, and a multitude of them has been 

 figured by Terquem in his various works on the foraminifera of 

 those formations. 



There is but a single specimen from the Malay Archipelago, 

 and this is from Station 25 in Area 2. 



