294 Mr. H. Seeley on Cambridge Palaontologij. 



which are convex and twice as wide as high. Body-whorl 

 very convex and (in the cast) less than twice the height 

 of the whorl above, and considerably wider than high. The 

 last whorl of the spire is exactly twice the height of the whorl 

 above it*. Mouth semicircular, rounded anteriorly. Colu- 

 mella ornamented in the middle part with two teeth, of which 

 the anterior is extremely large, fully a hne wide, and as high, 

 and angular. On each side of the whorl in the cast are wide 

 spaces, slightly hollow, like the fringes of Ranella, indicating 

 periodic mouths. 



In shape this shell is very like Phasianella neocomiensis 

 (D'Orb.). It is more inflated than any species oi Ringinella, 

 and is easily distinguished by the periodic mouths, by being 

 smooth, and by the large teeth in the middle of the columella. 



Extremely rare. University Museum. Collected by Mr. W. 

 Farren. 



The following species are new to the Upper Greensand of 

 England : — 



RostellariaOrbignj'ana( P. &II.)- Solarium Rochatianum (P. & R.)- 



cariuata {Mant.). Pleurotomaria allobrogensis(P. & R.)- 



Pteroceras Fittoni {Forbes). Brongniartiana ? (D'Orb.). 



retusum [Sow.). neocomiensis {D'Orb.). 



Natica Matlieroniana {D'Orb.). Dentalium ellipticum {Sow.). 



gaultina (D'Orb.). Cinulia incrassata (Mant.). 



Rhodani (Pict. & Roux). Hugardiana (D'Orb.), var. 



Ervyna (D'Orb.). Nerinsea, sp. 



Solarium dentatum (D'Orb.). Hipponyx, sp. 

 granosum (D'Orb.). 



EXPLANATION OF PLATE XL 



Pteroceras globulatum, back and front views of a very fine speci- 

 men, nat. size. Univ. Mus. 



Pterodonta marginata, ventral and dorsal views, nat. size ; the 

 tooth on the outer hp is only partially formed. Mus. Carter. 



Pterodonta longispira, dorsal view, slightly restored, from speci- 

 mens in Mus'. Carter. 



Fusus tricostatus, under side. Mus. Carter. The longitudinal ribs 

 restored fi-om a younger specimen in Univ. Mus. 



Fusus quinquecostatus, under side. Univ. Mus. 



Cerithium tenuistriatum, slightly restored. Univ. Mus. 



Funis elongatus, in Mus. Cookson (the whorls should have been 

 more oblique), and section showing the columella. 



? Funis brevis, greatly enlarged. 



Scalaria angularis, vipjjcr whorls restored. Mus. Carter. 



Solarium Sedgwickii (upper and vmder views of a partially grown 

 specimen). 



* Width 5 lines, height 7 lines. It was probably U hne higher. The 

 upper whorls of the specimen are broken avv.ay. 



