12 R. BULLEN NEWTON on 



less strikingly so in the modern Sepia. The dimensions of the fossil give a 

 length of 20 mm., width 15, and height 12. Although the rostrum shows 

 rather more curvature than usual, its slender and elongate characters agree, 

 with similar specimens of this species from the Bracklesham Beds of England 

 and similarly aged deposits of France and other European Eocene areas. 



Gabb's Belosepia ungula (Journ. Acad. Nat. Sci., Philadelphia, 1860, 

 New Ser. Vol. 4, p. 376, pi. 67, figs. 1-4) from the Texas Eocene of the 

 United States, appears to be a closely related form. 



The species is easily distinguishable from other described forms which 

 have more robust, shorter, broader, and sometimes wedge-shaped rostrums, 

 as for instance, B. incurvata of Cossmann and Pissarro (Pal. Indica, Mem. 

 Geol. Surv. India, 1909. New Ser. Vol. 3, Mem. No. i, pi. r, figs. 11-13, 

 pp. 2, 3), from the Lower Eocene (Ranikot Series) of India. 



The genus Belosepia is confined to the Eocene formation. 



DISTRIBUTION. British: Eocene throughout, but chiefly of the Lutetian 

 division. Europe : Paris, Belgium, &c. 



OCCURRENCE. Cutting No. n. 

 COLLECTOR. Mr. Kitson. 



Gastropoda. 



Family STROMBID^. 



Rostellaria bidigitata, sp. nov. 

 PLATE 4., figs. 8, 9. 



DESCRIPTION. Shell thick, elongate, narrowly pyramidal, turriculate, 

 depresso-convex ; body-whorl compresso-convex, postero-dorsally inflated, 

 canaliculated anteriorly and in rear ; spire produced, comprising about 10 deep, 

 flattened whorls, divided by a deep slightly excavated suture ; surface of the 

 earlier whorls spirally striate and longitudinally plicated, the later whorls 



