GASTEROPODA. 49 
Euxima suscioposa. Plate IX, fig. 6 
LL. Testa levi, ovato-conicd ; spird subcontorta ; anfractibus convexis, angustatis, anfractu 
ultimo subgloboso ; apertura obliqua, ovata. 
Shell smooth, ovately conical; spire rather contorted; whorls convex, narrow, the last 
whorl subglobose ; aperture oblique and ovate. 
A small globose species, the spire of which is rather angular, its length beg somewhat 
less than that of the last whorl. 
Locality. tis rare, and occurs in the soft shelly Oolite of Minchmhampton Common. 
Cuemnitzia, D’ Orbigny. 1839. 
Shell turreted, elongated, not umbilicate ; volutions numerous, frequently costulated ; 
aperture oval or angular, anteriorly large, retracted Posies columella straight and 
smooth ; outer lip thin and smooth. 
Cuemnitzia Lonspater. Plate VIII, figs. 13, 13a. 
C. Testé turritd, apice acuto, levigato ; anfractibus in medio profundeé constrictis vel 
sulcatis, suturis viz impressis ; aperturd, elongato-ovatd, superne constricta, 
Shell turreted, elongated, acute, smooth; whorls deeply constricted, or sulcated in their 
middle part; sutures of the whorls sometimes scarcely distinguishable ; aperture elongated 
and ovate, narrow posteriorly. 
For the first four volutions the mesial depression is but slightly marked; but it gradu- 
ally increases in depth, the last two or three whorls being deeply grooved. Several oolitic 
species approach this shell, more especially the M/e/ania lineata of the Mineral Conchology 
and the JZ. procera of Deslongchamps; in the latter species, however, the concavity of the 
whorls is always very slight, and is sometimes not appreciable. Axis 3 inches 3 lines ; 
transverse diameter 10 lines; length of aperture 10 lines; breadth of aperture 5 lines. 
Locality. Our species is moderately rare; it has been found only in the planking of 
Minchinhampton Common. 
Named after W. Lonsdale, Esq., F.G.S., whose valued contributions to Geology, 
especially among the oolitic series, are well known. 
CHEMNITZIA sIMPLEX. Plate VII, fig. 15. 
C. Testd magna, turritd, elongata, levi; anfractibus convexts, suturis profunde impressis, 
aperturd obliqud ovatd ; columellé marginatd, rotundatd, subrecta ; labro interno effuso. 
Shell turreted, elongated, smooth; whorls convex, the sutures deeply impressed, aperture 
oblique, ovate; columella marginated, rounded, nearly straight ; mner lip effuse. 
