TURBO. TURBAN . 
223 
77- Turbo* pallklus, Pale Turban . 
Montagu , pi. 21. f. 4. 
Shell rather slender, smooth, wjilte, sometimes with a 
greenish hue or covered with a rough coat: spires six or 
seven, flatfish but well defined : aperture somewhat orbi¬ 
cular, the outer-lip extremely thin, arched or much pro¬ 
duced towards the pillar; pillar-lip reflected, with a small 
perforation behind it, and an obscure tooth-like fold in the 
middle on the inside: length above the eighth of an inch ; 
breadth a third of its length. 
It is difficult to specify the precise differences between 
these three last species : but as far as we understand them 
from specimens before us, and which are all evidently dis¬ 
tinct, the Tu-bo unidentatus has the aperture} exactly oval, 
with the tooth placed on the inside in tlie middle; the 
T.plieatus has a strong fold quite across the pillar, and near 
the base ; the T. plicatus differs from both, in the much 
produced outer-lip and somewhat orbicular aperture, giving 
the base of the shell a more flattened appearance. 
Western coasts, and Dublin bay. v. m. 
78. Turbo interstinctus. Rosy-tipped Turban. 
Montagu, pi. 12. f. 10— Linn. Trans, iii. pi. 13. f. 23,24. 
Shell taper, obtuse, glossy-white, with generally a purple 
or rosy tinge at the tip : spires five, very little raised, but 
divided by a fine line, and marked with fine longitudinal 
ribs: aperture somewhat oval; the pillar-lip a little re¬ 
flected, with a small tooth : length a line ; breadth a third 
of its length. 
Western coasts, in fine sand. v. m. 
We cannot here avoid entering our strongest protest 
against the arbitrary removal of these six hist species into 
the genus Voluta, by modern compilers, in violation, as we 
are of opinion, of that natural alliance which in all doubtful 
cases should be ultimately decisive. If the mere circum¬ 
stance of the aperture being furnished with folds or teeth 
be alone a characteristic, then might the whole of this di¬ 
vision, and some others of a more remote family be arranged 
aa Volutes. But independently of this incident, we consider 
it as essential to the genus Voluta, that the aperture be 
elongated, taking in at the least one half of the shell, with 
