PLATE LXXIX. 



Fig. lad. lioLASTER l^evis, var. planus, Mantell. Flint, with moulds of this species, 



showing its gregarious character 

 and stratigraphical position in 

 the Chalk with flints, Lewes. 

 Natural size. Collection of the 

 Rev. Prof. T. Wiltshire, F.G.S. 

 (P. 317.) 

 2 a. — suBGLOBOSUs, Lcske. Posterior border, natural size, showing a 



small variety of test from the Red Chalk 

 of Speeton, inflated at the ambitus, and 

 truncated posteriorly. Natural size. 

 Collection of the Rev. Prof. T. Wilt- 

 shire. (P. 319.) 



2 3. — — — Upper surface. 



3 a. Cardiaster fossorius, Benett. Posterior surface, natural size, showing the 



narrow posterior border j anal area and high 

 position of the vent, an extremely sharp 

 angular variety. Cherty cast, from Lyme 

 Regis. Collection of the Rev. Prof. T. 

 Wiltshire. (P. 297.) 

 '6 b. — — — Upper surface of the same test, natural size, 



showing the deep anteal sulcus with angu- 

 lated borders and central position of apical 

 disc. 



4 a. IIoLASi'ER OBLiQUUS, Wright. Posterior border. Natural size. Red Chalk 



of Hunstanton. Collection of the Rev. 

 Prof. T. Wiltshire. (P. 313.) 

 a b. — — — Upper surface, showing test covered with 



small tubercles. 



