GASTEROPODA. 87 
Rh. Testdé conicd; apice postice curvato; ambitu ovali; rimd angustd, costis majoribus 
radiantibus (circa 18), minoribus tranversis decussatis. 
Shell conical; apex somewhat spiral, and curved posteriorly ; base oval, foramen 
narrow, lengthened, and rather distant from the anterior margin; ribs radiating (about 18 
in number), crossed by others, smaller and transverse. 
The indifferent condition of the original specimen will account for its having been 
placed with Lmarginula. 
Locality. Ancliff and Minchinhampton ; at the latter place it occurs only in the bed 
of planking : it is rare. 
Rimvxa Burori, Des/., sp., Plate VIII, fig. 3, 3a, 4, ¢. 
Emaretnvia Buiorri, Deslongchamps. 1842. Mém. Soc. Linn. de Normandie, tom. vii, 
pl. 10, figs. 1—3. 
a — JD Orb. 1850. Prod. Paléont., p. 303, 
Rk. Testdé parva, crassa, conicd; apice posticée curvato, lateribus subplanis; costis radi- 
antibus magnis 15 et parvis 14 alternis; sulcis punctis tranversalibus magnis notatis. 
Shell small, thick, conical; apex curved posteriorly, the sides flattened ; ribs radiating, 
15 larger and 14 smaller, alternating—the three larger anterior ones being the most 
prominent; the transverse sulci of the interstitial spaces are large. 
This species bears a considerable resemblance to £2. ¢ricarinata; but it is more com- 
pressed laterally, the three large anterior cost are less divergent, and the form of the base 
is a longer oval. The &. ¢ricarinata is likewise destitute of the smaller ribs, and has more 
numerous transverse lines. 
Locality. \t occurs rarely at Ancliff; and is likewise scarce in the shelly roestone of 
the Inferior Oolite at Leckhampton Hill, Cheltenham. A single specimen, badly preserved, 
has also been procured at Minchinhampton. Colleville, Calvados. 
Emarerinuna, Lam., 1801. 
PatELLa sp., Linn. 
Emareinutvs, Montf. 1810. 
Shell conical ; apex usually curved posteriorly, base entirely open, orbicular or oval ; 
’ J? ? 
its anterior margin having a vertical fissure more or less lengthened; surface ornamented 
with ribs, and decussated. 
