GASTEROPODA. 75 



Phasianella acutiuscula. Plate XI, figs. 28, 28a. 



P. Testa ovato-conicd; spird electa, acuta; anfractibus plants, angustis; anfractu ultimo 

 ovato, magnitudine modico. 



Shell ovately conical ; spire elevated, acute ; whorls flattened, narrow ; the last whorl 

 ovate, its size moderate. 



The figure most nearly approaches to P. conica, but it is less gibbose ; the spire is 

 more acute, elevated ; the whorls less numerous and narrow. 



Locality. It is not uncommon, and is found in all the shelly beds near to Minchin- 

 hampton. 



Phasianella nuciformis. Plate XI, fig. 26. 



P. Testa ovato-elongatd; spird parvd; anfractibus (6) subplanis, ultimo elongato; 

 aperturd angustatd. 



Shell ovately elongated ; spire small ; whorls (6) flattened, the last elongated ; aperture 

 narrow. 



The length of the aperture is equal to that of the spire ; the spire is acute ; the volutions 

 very narrow, except the last two turns, which are much elongated. Axis 9 lines, transverse 

 diameter 5 lines. 



Locality. It occurs in the planking of Minchinhampton Common, but is rare. 



Phasianella parvula. Plate XI, figs. 29, 29a. 



P. Testa parvd; spird elatd, apice acuto; anfractibus (6 — 7) planis aut subconvexis, 

 angustis; anfractu ultimo subgloboso; aperturd obliqud; columella arcuatd. 



Shell small; spire elevated; apex acute; whorls (6 — 7) flattened, or rather slightly 

 convex and narrow ; the last whorl globose and large ; the aperture oblique and oval ; the 

 columella curved at its base. 



The length of the aperture is two fifths of the entire shell ; the whorls are more numerous, 

 and the apex more acute, than is found in the other Great Oolite species ; the aperture is 

 rather small and contracted at its base. Axis 5 lines, transverse diameter 2^ lines. Rare. 



Locality. Minchinhampton Common. 



