24 R. BULLEN NEWTON on 



REMARKS. This species is closely related to Pleurotoma lajonkairii and 

 P. multicostata * which respectively belong to the Lower and Middle Eocene 

 of the Paris Basin, the second species forming the type of M. Cossmann's 

 Eopleurotoma? It differs from both, however, in the spire being of equal 

 length with the body -whorl and not longer as in the European forms, besides 

 being furnished with a better defined posterior division to the whorls. No 

 bifurcation of the ribs is visible as in P. multicostata. One specimen much 

 resembles the figures of P. lajonkairii, although examples examined of that 

 species do not appear to equal the detail shown in the original illustrations. 

 Resemblances may also be traced with Edwards's P. abnormis 3 from the British 

 Lower Eocene which, like the other forms referred to, is provided with a spire 

 exceeding the length of the body-whorl. 



OCCURRENCE. Cuttings Nos. i, 10. 

 COLLECTOR. Mr. Kitson. 



Family CONID^. 

 Conospirus 4 cf. parisiensis (Deshayes). 



PLATE 3, figs. 8, 9. 

 Conus antediluvianus. 



Deshayes : Desc. Coq. Foss. Paris, 1835, Vol. 2, pi. 98. figs. 13, 14, pp. 749, 750, non Bruguiere. 



Conus parisiensis. 



Deshayes : Supplement Desc. Coq. Foss. Paris, 1865, Vol. 3, p. 418. 



De Gregorio : Ann. Geol. Pal. 1890, part 7, p. 21 ; Cossmann : Essais Paleoconch. Comp., 1896, 

 part 2, pp. 155, 156. 



REMARKS. The small Coniform shells here determined as related to 

 C . parisiensis of Deshayes from the Middle and Upper Eocene beds of Europe, 

 are of fairly frequent occurrence in the Nigerian deposits. They are of more 

 or less uniform dimensions, the largest measuring 19 by 10 m.m., while 

 those represented by figs. 8 and 9 of Plate 3 are a little under that size, the 

 measurements of the type as given by Deshayes being 38 by 17 mm. The 



1 Deshayes : Desc. Coq. Foss. Paris, 1834, Vol. 2, pi. 64, figs. 8-13, pi. 65, figs. 18-20, pp. 466-8 ; 

 ibid., Suppl., 1865. Vol. 3, pp. 370, 71. 



2 Cossmann : Ann. Soc. R. Mai. Belgique, 1889, Vol. 24, p. 269. 



3 F. E Edwards : Eocene Mollusca England-Mon. Pal. Soc. 1860, pi. 30, fig. 14, pp. 294, 5. 



4 Gregorio, A. De. Ann. Geol. Pal. 1890, part 7, p. 21. Type of Conospirus =C. antediluvianus 

 Bruguiere from the Upper Tertiaries of Italy. 



