250 SPECIES OF THE SYSTEMA. 
Brucecinun gthbosuliwun, 
The box marked for this and the preceding species in the 
Linnean collection contains examples of the B. gibbosulum of 
authors (Kjener, Coq. Viv. Buc. f. 116, too elongated), and of 
the B. Thersites of Bruguiére. As the “ levi” of the diagnosis 
suits not the latter, whilst the entire description is applicable 
to the former, it is clear that the species has been rightly 
identified. ‘‘ Faux unidenta(ta) levi(s.)”, added by Linneus in 
his revised copy, further supports the received opinion, the 
smoothness of the interior in gibbosulwm and its denticulation 
in Thersites being an easy mark of distinction between these 
hump-backed congeners. The cited figure of Gualtier has been 
generally accepted as a delineation of this species; Seba’s 
drawing, on the contrary, most decidedly represents Thersites, 
and was either misplaced, or, being a dorsal view only, mistaken 
for the other: it was only added in the twelfth edition. 
Bueeinum mutable, 
The figure of Gualtier, being in harmony with the locality 
and description, enabled naturalists to determine this common 
* Mediterranean shell with facility and certainty. The Buccinum 
(Nassa) mutabile of authors (Kiener. Coq. Viv. Buccin. f. 93) is 
still preserved in the Linnean cabinet, and alone suits the defi- 
nition of the species. ‘“ Faux unidentata striata’ was designed 
to have been added to the description in the proposed new ~ 
edition of the ‘ Systema.’ 
Bucci Mevitewnr, 
The accuracy of the description, and the correctness of both 
the synonymy and of the assigned locality, left no possibility of 
this strongly featured and abundant shell being confused with 
any other. The Buccinwm Neriteum of authors (Kiener, Coq. 
