BY FREDKRK'K CHAPMAN. 271 



Amphifitegina lessoni, d'Orb.; Nos. 176, 182, 211, 212, 223. 

 [Usually the small, compressed, lenticular variety]. 

 Operculina complanaCa, Def ranee; No. 223. 

 Heterostegina deprr.Hsa, d'Orb.; No. 182. 

 H. jiiarcjaritata, Schlumberger"^ ; Nos. 182, 211. 

 H. cf. margaritata; Nos. 134, 176. 

 H. sp.; Nos. 210, 223. 

 Cycloclypetis sp.; Nos. 134, 176, 223. 



C. PusTULOsus, sp.nov. 

 (Plate V. fig.l; pl.vi. fig. 2; pl.vii. fig. 2). 



[Description. — This species is readily separable from already 

 known forms by its closely pimpled shell-surface. This decora- 

 tion is not confined to the central area of the test as in the 

 megalospheric form of C. carpenteri (Brady's G. guembelianus), 

 but is uniformly distributed over the whole surface. In the 

 present form the chamberlets are, generally speaking, more 

 rectangular than those of C. ca7ye7iteri, and towards the peri- 

 phery become very narrow. A fine example, in median section, of 

 a microspheric form, is shown on pl.vi. fig. 2. Diameter of test 1 

 to 6 mm.; Nos. 182, 223J. 



Cycloclype7is sp.; Nos 134, 176. 



Lepidocyclina insulce-natalis^ Jones & Chapm.; Nos. 133, (?) 134, 

 (?)190, 211, 212, 223. 



L. insuUa-yiatalis var. incequalis, Jones & Chapm; Nos. 133 

 211. [The Lejndocyclina described by Prof. Rupert Jones and 

 myself from the Miocene limestones of Christmas Island under 

 the name of L. insulce-natalisj represented the microspheric con- 

 dition. The megalospheric individuals may possibly be repre- 

 sented by the so-called variety incequalis,X which is closely 

 comparable, if not identical with L. murrayana, Jones & Chapm. ,§ 



* Samml. Geol. Reichs-Mus. Leiden, Ser. 1. Vol. vi. pt.3, 1902, p.252, 

 pl.vii. fig. 4. 



t Mon. of Christmas Island (Brit. Mus. Nat. Hist.) 1900, p.242, pl.xx. 

 fig.o, pl.xxi. figs. 13, 14. 



XOp. cit. pp.254, 255, pl.xxi. fig. 12. 

 § Op. cit. pp.252, 253, pl.xxi. fig. 10. 



