262 
GASTEROPODA OP THE INPERIOR OOLITE. 
197. Natica Dundeibnsis, Tavmey, 1873. Plate XX, figs. 11 a, 11 b, 11c. 
1873. Euspiea Dcndeiensis, Tawney. Dundry Gasteropoda, p. 7 (15), pi. i, 
fig. 3. 
? — Zelima, d'Orh. Tawney, op. cit., p. 6 (14), pi. i, fig. 1. 
Description : 
Spiral angle . . . .75°. 
Height of body- whorl to entire shell . . 68 : 100. 
Length . . . . .35 mm. 
“ Shell globose, spire somewhat elevate, apex acute ; whorls six, obtusely 
rounded, separated by a broad, flat space at the suture, but round at the angle. 
Last whorl swollen, surface of shell with numerous very fine transverse lines, and 
a few distant obscure spiral raised lines. The test is punctate ; puncta in equi- 
distant rows. There is no umbilicus visible, the lip seems expanded over it.” 
Relations and Distribution. — This is sub-Buspiroid, and rather a clumsy form, 
the result in part of the salience of the penultimate whorl. In the young specimen 
(fig. lie) the system of axial and spiral lines, mentioned by Mr. Tawney, are so 
well preserved as to produce a complete reticulation. But this feature seems 
confined to specimens from Dundry where the matrix is suitable and other- 
conditions favourable, and is most obvious in the tender young shell. Specimens 
from Oborne exhibit the wide-apart spiral lines, but not very clearly. 
Natica Dundriensis occurs in the Humphriesianus -zone at Oborne and in the 
iron-shot Oolite at Dundry, ? also at Hook Norton. The single shell identified 
by Tawney as Natica Zelima, d’Orb., is probably an exceptionally large specimen 
of this species. 
198. Natica Hulliana, Lycett, 1863. Plate XX, fig. 12. 
1863. Natica Hulliana, Lycett. SuppL, p. 13, pi. xli, fig. 2. I 
I 
Bibliography, 8fc . — The author says he has obtained this species in the Great | 
Oolite of Minchinhampton and in the Inferior Oolite of the same locality. The J 
type specimen, now refigured, is labelled “ Inferior Oolite, Nailsworth.” The 
matrix somewhat resembles the upper bed at Longfords. Mr. Witchell quotes this 
species from the Glypeus-grit. 
Description . — Proportions nearly the same as in the preceding species. “ Shell 
ovate, subglobose, smooth ; volutions (six) very convex, the sutures deeply 
