GASTEROPODA. 13 



More fusiform than other known English examples of the genus. 

 Geolo(/ical Position and Locality, The Great Oolite of iMinchinhampton, collected by 

 Mr. Witchell. 



Natica Hulliana, L^c. Tal). XLI, fig. 2. 



Testa ovata, subglohosa lavi ; anfractibus 6 valde convexis, suturis profunde iinpressis, 

 spira elevato, aciito ; apertura oblique ovali, antice rotundata postice angulata ; colunudUi 

 callosa, urn bill CO nullo. 



Shell ovate, subglobose, smooth ; volutions (6) very convex, the sutures deeply impressed; 

 the spire is elevated, acute, the last volution being very large ; the aperture is ovate, 

 oblique, the anterior side rounded, the posterior side acute, the length exceeding a moiety of 

 that of the entire shell; the columella is rounded, thickened, and there is no umbilicus. 



Allied to N. intermedia, Tab. VI, fig. 1, but with a more elevated acute spire, more 

 deeply depressed sutures, and a more globose ultimate volution ; specimens vary somewhat 

 in the figure of the last volution, but the acute, elevated, deeply sutured spire will always 

 serve to distinguish it. 



Geological Positions and Localities. I have obtained it in the Great Oolite of 

 Minchinhampton, and in the Inferior Oolite of the same locality ; Mr. Whiteaves has also 

 kindly forwarded to me a specimen from the Great Oolite of Kirklington, Oxon ; the latter, 

 which is a young form, has the last volution slightly more globose than in the other 

 examples. 



EULIMA? LiEVIGATA, Li/c. Tab. XXXI, fig. 3. 



Testa parva lavigata, subulata, acuta-, anfractibus {circa 10) planatis, angustis, suturis 

 impressis ; apertura suborbicidari obliquo, umbilico mdlo. 



Shell small, smooth, elongated, apex acute ; volutions (about ten) narrow, their sides 

 flattened, the sutures distinct but not constricted ; the aperture is obliquely orbicular ; there 

 is no umbilicus. 



The height of each volution slightly exceeds the half of the opposite diameter ; length, 

 nine lines ; diameter of the last volution, three lines. 



Compared with Eidima ? communis, the spire is more acute, the volutions more flattened, 

 and the sutures are less deeply impressed. 



Geological Position and Locality. It occurs rarely in the Cornbrash of Scarborough ; 

 the example figured is from the collection of J. Leckenby, Esq. 



