Eocene Shells from Nigeria. 87 



which has recently been recorded by Oppenheim from 

 Egyptian rocks of similar age (' Palaeontographica,' 1903, 

 vol. XXX. part 3, p. 153). 



Dimensions. Umbouo-ventral 40 mm.j autttro-posterior 

 (approximate) 37 ; diameter 24:. 



Log. Kalfu-Tamaskie. 



Collector. Colonel Elliot. 



The following casts of Lucina probably comprise what 

 Prof, de Lapparent has referred to under the designation of 

 Lucina cf, gigantea : — 



Lucina cf. JMenardi, Deshayes. (PI. V. fig. 8.) 



Lucina Menardi, Deshayes, Desc. Coq. Foss. Paris, 1825, vol. i. pi. xvi. 



figs. 13 & 14, p. 94. 

 Lucina Menardi?, Bellardi, Mem. R. Accad. Sci. Torino, 18o4, ser. 2, 



vol. XT. p. 188. 



This form is represented by three limestone-casts with 

 closed valves in very fair condition of preservation. It is of 

 larger size than L. pharaonis^ and showing coarser radial 

 striations. It differs also from L. gigantea in possessing 

 more ventricose valves. 



One of the specimens (fig. 8) from Kalfu-Tamaskie exhibits 

 the long, narrow, anterior adductor scar lying slightly above 

 the pallial line. The size of the same specimen agrees with the 

 published figures of Deshayes, which are said to be of natural 

 size, a statement which, however, does not agree with the 

 text, where greater dimensions are given. 



Dimensions (the Garadimi specimen). Umbono-ventral 

 56 mm. ; antero-posterior 58 ; diameter 26. 



It is interesting to note in connexion with this determina- 

 tion that Bellardi doubtfully referred an Egyptian fossil to 

 this species. 



Lacs. Kalfu-Tamaskie and Garadimi. 



Collectors. Colonel Elliot and Captain Lelean. 



Lucina cf. pharaonis, Bellardi. (PI. V. fig. 9.) 



Lucina pharaonis, Bellardi, Mem. R. Accad. Sci. Torino, 1854, ser. 2, 

 vol. XV. p. 190, pi. ii. fig. 12; Oppenheim, Palaeontographica, 1903, 

 vol. XXX. pt. 3, pi. xiii. figs. 1 & 2, and pi. xv. fig. 6, p. 124, 



Represented by natural casts with closed valves of various 

 sizes, agreeing in its nearly circular shape and diameter with 

 the same form from Egypt, as figured quite recently by 

 Dr. Oppenheim and previously by Bellardi and others. The 

 Nigerian casts exhibit numerous fine longitudinal striations 



