PULMONATA. 143 
ceeding half an inch in length ; while others, in a state of maturity, barely attain half 
that size. The figured specimen is nearly 4-10ths of an inch long, by 4 of an inch wide. 
Localities.—Bracklesham, where it is very rare. French: Grignon, Parnes, 
Mouchy, Courtagnon, Creil, Vexin, Acy (fide D’Orb.). Italian: Castel-Gomberto, 
near Vicenza (fide Bronn), Magdeburgh (fide Phil.), Westeregeln? (fide Beyr.), 
Gainfahren ? (fide Hornes). 
No. 84. MARGINELLA PuUSILLA. f. 2. Edwards. Tab. XVIII, figs. 6 a—c. 
MW. testa minimd, ovali ; spird easertiusculd, apice obtuso: apertura elongata, mediocr?, 
anticé profundée emarginatd ; labro eatis marginato, intis crenulato ; columella sub-rectd, 
guinguies vel sevies plicata, plicis fere transversis, sub-equalibus. 
Shell minute, oval; spire slightly elevated, with an obtuse apex : aperture elongated, 
moderately wide and deeply notched in front; outer lip thickened along the outer 
margin, and finely crenulated within; columella nearly straight, with five or six folds, of 
which the anterior two are the longer and slightly oblique, and the others are 
almost transverse and nearly equal in size. 
This pretty little Marginella appears to be perfectly distinct from all its congeners. 
It occurs rather plentifully in the Highcliff sands; but apparently disappears in the 
Barton sands and clay, as I have not met with any specimen from those deposits. It 
reappears in the fluvio-marine formation in Headon Hill, in which it is found sparingly. 
Size.—Axis, not quite 2-10ths of an inch; diameter, 1-10th of an inch. 
No. 85. MARGINELLA SIMPLEX. FF. 2. Edwards. Tab. XVIII, figs. 8 a—c. 
M. testa ovato-oblongd ; spird brevissind, pene obtectd ; aperturd elongatd, postice 
angustd, antice latiori, ad basin late emarginatd ; labro extiis incrassato, intus mutico ; 
columella quingues vel pluries plicatd. 
Shell small, ovate-oblong; spire short, depressed, almost concealed ; aperture 
elongated, narrow behind, effuse, and widely but not deeply notched in front; outer 
lip thickened along the margin, smooth, uncrenulated within; columella with two 
distant slightly oblique folds in front, and three or more obscure, nearly transverse, 
folds behind. 
This species so closelyresembles J/. ovw/ata in its general aspect, that a hasty comparison 
would lead to the two being regarded as identical: there are, however, several differ- 
ences which entitle the present shell to specific distinction. The spire is shorter and 
more depressed, and the anterior folds on the columella are more distant, and not so 
oblique; but that which particularly distinguishes J/. sémplex is the condition of the 
