SUPPLEMENT. 485 
440. Curitarum (Cotta!) Lycrrtt, sp. nov. Plate XLIII, figs. 22 a, 22 b. 
Description : 
Height : : : ° = Lo mm, 
Body-whorl to total height : . > 200): E00) 
Spiral angle . : : : One 
Shell sub-fusiform; apex sharp; spire regular; number of whorls eight, 
sutures close fitting. The ornaments consist of wide-apart longitudinal varices, 
which are decussated by strong spiral lines, slightly nodular. 
The body-whorl is considerably expanded so as to make the outer lip patulous. 
The longitudinal varices are scarcely to be traced in the body-whorl, which is 
ornamented by numerous spiral ribs, expanding outwards with the increase of the 
whorl and causing the margin of the lip to be crenulate. The aperture is oblique 
with a full and rounded outer lip, somewhat flattened anteriorly, with a sinuous 
and rather encrusted columella, which terminates in a broad, short notch turned 
outwards almost at right angles to the axis of the shell. 
Relations and Distribution.—This form is very different to the general facies 
of the shells in the Inferior Oolite which have been referred to Cerithium. It is 
suggestive of Pyrazus and other sub-genera of Potamides, but these are at least 
brackish-water shells. On the other hand, its resemblance to such shells as 
Cerithium (Colina) contractum, Sow., and Cerithium (Colina) teniatum from the 
Indian Ocean (Natal) is very striking. Provisionally we may refer the Oolite 
specimens to Colina. Mr. Wilson considers that, possibly, there is a generic 
affinity between C. [ycetti and the Upper Lias Nortonia Patroclus. 
From Nailsworth (Oolite Marl or Pea-grit) there are four specimens in the 
Jermyn Street Museum (Lycett Collection). The figured specimen is the most 
elongate. 
44]. Bracuyrrema, sp. Plate XLITI, fig. 23. 
An imperfect specimen with an estimated height of 15 mm. and a spiral angle 
of 40°. The aperture, which happens to be well-preserved, is widely sub-quadrate 
with an effuse outer lip; columella much twisted near the base, with a broad 
eutter or notch directed outwards at an angle of 45°. There is strong granu- 
lated spiral ornamentation throughout the shell, which appears to have been 
very thick. 
This seems to be a typical Brachytrema., A single specimen from the Irony 
Nodule-bed, Burton Bradstock. 
1 H. and A. Adams, 1853. 
64 
