1 8 R. BULLEN NEWTON on 



Family CYPRAEID^. 

 Cypraea cf. bowerbanki, J. de C. Sowerby. 



PLATE 3, fig. 13. 

 Cypraea bowerbanki. 



J. de C. Sowerby : In F. Dixon's "Geology and Fossils of Sussex,'' 1850, p. 189, pi. 8, figs, i, 2 ; F. E. 

 Edwards : Mon. Pal. Soc. (Eocene Mollusca), 1854, p. 129, pi. 17, figs, ic, id. 



REMARKS. The specimen herewith determined is in a much fractured 

 condition, although its preparation for photographic purposes has been attended 

 with fairly successful results. It resembles very closely the well known 

 Bracklesham Bay species, Cypraea bowerbanki, which, according to the original 

 description, is " Egg-shaped, smooth, beak short, moderately wide ; aperture 

 narrow, curved, without a posterior canal ; outer lip incurved, a little flattened 

 towards the beak, with about thirty to thirty-five teeth, nine or ten of which are 

 elongated on the flat part." The actual basal characters of the present shell are 

 not present, so that uncertainty exists as to the width of the anterior opening, 

 and the presence or otherwise of a columella plication observed in examples of 

 the type. In other respects, however, the shell presents similarities such as its 

 proportional measurements, a completely hidden spire the absence of a posterior 

 canal, and a well curved labrum and columella region, which enclose an aperture 

 having a uniform width throughout. The dental ridges on both sides of the 

 mouth are also strikingly like those characterising the British shell. 



DIMENSIONS. 



(Approximate) ... ... ... 50 by 40 millimetres 



DISTRIBUTION. Lutetian, British. 

 OCCURRENCE. Cutting 6. 

 COLLECTOR. Mr. Kitson. 



Family AMPHIPERASID/E. 



Amphiperas nigeriensis, sp. nov. 



PLATE 3, figs. 14, 15. 



DESCRIPTION. Shell small, oval-fusoid, ventricose ; extremities produced and 

 widely channelled ; spire involute, without apical cavity ; dorsal and columella 

 surfaces covered with numerous, equi-distant, horizontal ridges, intermediate 

 grooves divided by a single central, horizontal line, and crossed by delicate, equi- 

 distant vertical striations, forming a nearly equi-lateral rectangular structure ; 



