366 GASTEROPODA OF THE INFERIOR OOLITE. 
The hody-whorl is large, angular, and sub-bicarinate, the widest part being at 
the upper keel, but the difference in width between the upper and lower keel varies 
considerably. ‘The keels are richly granulated, the granulations in the lower keel 
being smaller, and the whole surface of the shell is covered by an interlacing 
network of spiral and radial striz, the umbilicus being encircled by a row of 
prominent tubercles rather wide apart. Aperture sub-rhomboidal to circular ; 
umbilicus funnel-shaped and deep. 
Relations and Distribution.—There is much variety in the shells classed under 
Turbo Shaleri, chiefly owing to the difference in the amount of exposure in the 
penultimate—thus producing a figure very different to that of the specimen 
selected (fig. 12). It is obviously a member of the Granata-group, especially 
characteristic of the Concavus-bed, Bradford Abbas. Quoted from Dundry by 
Tawney, where specimens seem to be less highly ornamented. 
301. Delphinula, species or variety. Plate XXX, fig. 13. 
The specimen figured in the accompanying plate differs so considerably, both 
from Turbo Shaleri and also from the other members of the Granata-group, 
described below, as to be worthy of notice. The opening of the spiral angle is 
about 115°, the body-whorl is equally bicarinate, and the ornaments are very fine, 
except where a circle of elongated tubercles borders the wide and funnel-shaped 
umbilicus. 
The specimen is believed to be from the Inferior Oolite of the Dorset district 
and is unique. Asa mere name of convenience I would distinguish it as Delphinula 
** densistriata.” In shape, but not in ornamentation, it has some resemblance to 
Turbo Theodori (Goldf., t. 179, 1). 
302. DrLPHINULA SHALERI, VAR. PULCHRIOR. Plate XXX, fig. 14. 
Description : 
Height : : : ; . 2mm. 
Width : . : » 6 mm: 
Mean spiral angle avout : Bci5) 
Shell turbinate, moderately umbilicated, spire faicly elevated, ranging from 
more than one-third to less than one-half the total height; apex flattened, 
apical whorls smooth. Number of whorls five, concave, and ornamented by tuber- 
