TURBO. 
Prats XIII. 
Species 47. (Fig. 6 and c. Mus. Cuming.) 
Turso sprnosus. I have already described this ex- 
tremely variable species at Plate X., and there remarked 
the necessity of figuring the present specimen to assist in 
identifying it with Zhe Spiny Silvermouth of Chemnitz, 
Conch. Cab. vol. v. p. 204. pl. 181. f.1797. Externally 
it has a very similar aspect to certain varieties of the 
T. chrysostoma, it may, however, be readily distinguished 
from that species by its more tubular aperture, of which 
the interior is delicately silvered. 
Species 41. (Mus. Brit.) 
TurBo JoURDANI. 
turbinatd, imperforatd, anfractibus primis spiraliter 
tricostatis, costis subangustis, prominentibus, distantibus, 
ultimo ventricoso, multicostato, costis latiusculis, ob- 
columella subcylindraced, superné callosé ; 
aperturé ampla, circulari ; castaneo-rubente, intus mar- 
Turb. testd subampla, ovaté, conico- 
scures ; 
garitaced. 
Jourpan’s Turbo. Shell rather large, ovate, conically 
turbinated, imperforated, the first whorls three-ribbed, 
ribs rather narrow, prominent, distant, last whorl 
ventricose, many-ribbed, ribs rather wide, and ob- 
secure; columella rather cylindrical, callous at the 
upper part; aperture large, circular ; chesnut-red, 
interior pearly. 
Krener, Revue Zool. Soc. Cuv., 1839, p. 324. 
Zool., 1840, Moll. pl. 9. 
Hab. New Holland. 
Of this fine species there are two examples in the 
British Museum, remarkably distinguished from any other 
of the genus. The specimen represented is the smaller of 
the two. The first few whorls are characterized by three 
prominent spiral ribs, but they gradually become extinct 
as the shell approaches maturity, leaving the last whorl 
encircled throughout with a succession of obscure broad 
ribs, scarcely elevated above the surface. 
Mag. de 
Species 4 (Fig. c and d. Mus. Saul.) 
TurBo saxosus. The specimen here represented is a 
more frequent state of the species than either of those 
figured in Plate IV., and deserves illustration on account 
of the peculiar aspect of its colouring and additional 
tubercles. It is uniformly smaller in size, and of a white 
silvery ground, with the green sparingly distributed in 
rather distant waved stripes. 
\ 
April, 1848. 
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