744 Transactions of the Society. 



Sub-family Cassidulinin^e. 

 Cassidulina d'Orbigny [182G]. 



Cassiclulina subglobosa Brady, plate XVI. fig. 2 a, b. Brady, 

 1881, Quart. Journ. Sci., n.s. xxi. p. 90. ' Challenger' Monograph, 

 plate liv. fig. 17. — Our specimen, the first of this " genus " recorded 

 from the London Clay, is very small, and we at first hesitated to 

 place it under Brady's form, but remarking its pear-shaped 

 bulimine-like orifice, and its subrotundate form, we consider it 

 referable to this variety rather than to C. crassa d'Orbigny. One 

 specimen ; brown clay. 



Family Lagenid2e. 

 Sub-family Lagenin^:. 



Lagena Walker & Boys [1784]. 



Lagena globosa (Montagu), plate XIV. fig. 11. Vermiculum 

 globosum Montagu, 1803, Test. Brit., p. 524. — A single spherical 

 chamber, sometimes inclining to oval, smooth, and shining, with an 

 aperture of radiating fissures, stellate in appearance. We figure a 

 typical specimen, but have also found the more oval varieties. 

 Four or five examples ; brown clay. 



Lagena globosa (Montagu), var., plate XIV. fig. 12. — A dwarfed 

 variety of L. globosa, in which the upper portion of the test is 

 attenuated, forming a neck, at the apex of which is a stellate 

 aperture. From the black clay. 



Lagena Isevis (Montagu), plate XIV. fig. 13. Vermiculum 

 Isevis Montagu, 1803, Test. Brit., p. 524. — Smooth, oval, passing 

 into the shape of an oil-flask ; the aperture is a lipped circular hole 

 at the end of a longer or shorter neck. Three or four specimens ; 

 brown clay. 



Lagena apiculata Beuss, plate XIV. fig. 14. Oolina apiculata 

 Beuss, 1850, Haidinger's Nat. Abh., iv. p. 22, plate i. fig. 1. — 

 Smooth, egg-shaped ; narrowing to a blunt stellate aperture above, 

 and having a short point below. Three specimens ; black clay. 



Lagena vulgaris Williamson ; var. oxystoma Beuss, plate XIV. 

 fig. 15. Lagena oxystoma Keuss, 1858, Zeitschr. d. g. Ges., x. 

 p. 433 ; 1862, Sitz. K. Ak. Wiss. Wien, xlvi. p. 335, plate v. 

 fig. 66, — A spherical form, with a neck rising abruptly from the 

 chamber and ending in a circular orifice. The surface of this 

 variety is granular, thus presenting a slight difference from 

 L. hispida and L. hystrix Keuss (' Lagenideen ').* This form was 

 first noted by Beuss as a new species in ' Ueber die Foraminiferen 

 von Pietzpuhl,' Zeitsch. d. Geol. Ges., x. (1858) p. 433, being 

 figured by him subsequently in his 'Lagenideen,' quoted above. 

 One ; brown clay. 



* SB. K. Akad. Wiss. Wien, xlvi. (1862) pi. vi. figs. 77-80. 



