Report on Foraminifera. By F. W. Millett. 11 



Lagena Chasteri sp. n., plate I. fig. 11. 



Test flask-shaped ; rounded at the base. Shell substance consist- 

 ing of a mass of vesicular matter enclosed between two layers of dense 

 clear substance. Surface smooth and polished. Length - 28 mm. 



That this is closely allied to L. spumosa is shown by the tendency 

 of the two forms to coalesce. 



The vesicular matter sparkling through the transparent outer 

 layer causes the test to resemble the mineral avanturine. 



It has been observed only at Station 25, where it is not uncommon. 



Lagena pannosa sp. n., plate I. figs. 12-14. 



Test flask- or decanter-shaped, with usually a constriction at the 

 place where the neck joins the body. Shell substance composed of an 

 inner layer of hard matter, on which rests a thick coating of opaque 

 granular substance, which exhibits a strong tendency to disintegrate. 

 Between the middle and base of the body are two zones of irregular 

 indentations. Length 0*30 mm. 



This interesting member of the com pound- wall series is well marked 

 by the tendency of the granular portion to disintegrate and expose 

 portions of the internal layer ; to a less extent this feature is apparent 

 also in L. spumosa. 



In the variety fig. 14 the disintegration is more irregular, and the 

 zones are not produced. 



The L. tubifero-squamosa Parker and Jones,* fossil from Grrignon, 

 with its "decaying outer layers," appears to be a member of this 

 group. 



It occurs at many Stations in both Areas, but is most abundant at 

 Station 25, which appears to be the headquarters of the compound - 

 wall series. 



Lagena foveolata Reuss, plate I. fig. 15. 



Lagena foveolata Reuss, 1862 (1863) Sitzungsber. k. Akad. Wiss. 

 Wien, vol. xlvi. p. 332, pi. v. fig. 65. Lagena No. 25, Von Schlicht, 

 1870, Foram. Septarienthones von Pietzpnhl, p. 10, pl.iii. fig. 25. 



This is a very beautiful form, the minuteness and regularity of 

 the sculpture causing the test to shine with great lustre. 



The cells are smaller, and have less space between them than in 

 the example figured by Reuss. 



It occurs, very sparingly, at Station 25, and has not been observed 

 elsewhere. 



* Phil. Trans., 1862, p. 354, pi. xviii. fig. 7. 



