194 CONTRIBUTIONS 
T. Stokesit.* Plate 6. Fig. 207. 
Description. 'Turbinolia cuneate, granulate, with twenty- 
four longitudinal furrows ; furrows on each side ten, two 
of which are incurved and extend nearly to the base—on 
each edge two, slightly curved and extending nearly to . 
the base; base emarginate; star elliptical; lamellee rugose. 
Diam. 5-20ths, Length 7-20ths, Breadth 7-20ths, of an inch. 
The segment is a magnified view. 
Observations. This is a beautiful species, resembling 
very slightly in outline the J. crispat (Lamarck). It is, 
however, more cuneate, and the situation of the furrows 
is different. The furrows on the sides of the Stokesii 
are marked, and from the edge of the star converge nearly 
to a point below the centre on each side. Anxious to dis- 
cover if any of the Turbinoliw possessed the same character 
with some of the Lunulites, (the enclosing in the calcare- 
ous matter a grain of sand as a point of commencement 
of growth, or as a balance) I first opened specimens 
of the Maclurii without success ; then specimens of the 
Stokesii and Goldfussii, in both of which the grain was 
found ; several pharetra were next examined, but in none 
was it to be seen. Having but a single specimen of the 
nana, I could not submit it to an examination. 
* T have placed on this species the name of the late secretary of the 
Geological Society of London, distinguished for his activity in promot- 
ing the knowledge of natural science. 
| See Goldfuss, vol. 1, p. 15, fig. 7. 
