THE FAMILY LITUOLID^ 157 



floorS; and subdivided by secondary labyrinthic 

 partitions. Eocene. (?) Lower Miocene. 



Example. — C. cpgyptiensis, Chapman, ' Geol. 

 Mag.,' N.S., Decade 4, vol. vii. 1900, p. 11, pi. ii. 

 figs. 1-3. 



Test conoidal, in vertical section nearly equi- 

 lateral, the two sides slightly convex, straight, or 

 incurved in the middle of the test ; base circular in 

 outline, and with a slightly convex surface ; peripheral 

 edge rounded. The base of the test, the homologue 

 of the septal face, is finely porous, or perforate. 

 (?) Loiver Miocene of Egypt ; constituting a large 

 proportion of a limestone. (Plate 8, figs. K, Z.) 



Genus Endoiliyra, PmLLiPS. 



Test polythalamous ; nautiloid or rotaliform ; 

 aperture simple, situated at the inner margin of the 

 final chamber. Carhonifcrou>i to Trian. 



Example. — E. Bowmani, Phillips, ' Proc. Geol. 

 Tech. Soc.,' West Riding, Yorks, vol. h. 1845, 

 p. 279, pi. vii. fig. 1. 



Test depressed, usually consisting of tw^o or three 

 oblique convolutions, of which but little more than 

 the last is visible on the exterior. Margin thick, 

 rounded, lobulate ; septal lines depressed. Segments 

 inflated ; variable in number, usually from seven to 

 ten in each whorl. Aperture single, simple. 



This species is usually the chief foraminiferal 

 constituent of the EndotJiyirt limestones often met 

 with in England, Wales, Scotland, Ireland, the 



