460 GASTEROPODA OF THE INFERIOR OOLITE. 
justify their separation ; whilst in the shell itself the rugose radial ornamentation 
of the latter species is entirely wanting. 
Rare in the Great Oolite of Ancliff and Minchinhampton. My own specimens 
are from the Lincolnshire Limestone (Inferior Oolite) at Stoke Lodge, whence 
several interesting fossils have been procured ; rare. 
Family—PATELLIDA. 
Shell conical, with apex turned forwards ; muscular impression horseshoe-shaped, 
open in front.—S. P. Woopwarp. 
The Patellids of the Jurassic rocks have been described under several genera, 
viz. Patella, Scurria, Acmea, Scurriopsis, Guerangeria, Deslongchampsia, &e. In 
the Inferior Oolite of this country we do not possess many more than half a dozen 
species, and these on the whole are scarce and locally distributed. In the absence 
of special evidence these will be described primarily under Patella. 
Genus—Paten.a, Linneus, 1758. 
Shell ovately conical, with an oblong or oval base; apex subcentral, or inclining 
towards the anterior side; internal surface smooth ; margin of the aperture entire. 
Section A without radial ornament (? = Sewrria, Gray). 
404, Parenta inornata, Lycett, 1850. Plate XLII, figs. 4a, 4d. 
1850. Paterta tnornata, Lycett. Ann. Mag. Nat. Hist., 2nd ser., vol. vi, 
p. 415. 
1853. — — = Proe. Cotteswold Nat. Club, vol. i, p. 76. 
P Syn. — -- Morris and Lycett. Gt. Ool. Moll., pt. 1, p. 98, 
pl. xii, figs. 11, 11a. 
Description : 
Length ; : : ‘ . 30mm. 
Width : ‘ : ‘ . 18mm. 
Height : mee Deaiiie 
“ Ovate, smooth ; apex pointed, moderately elevated, subcentral, but posterior 
and inclined slightly forwards.” 
