VOLUTA. 227 
Viv. Mitra, pl. 2, f. 4). There is no 48, O, in Gualtier: the 
reference to it is expunged in our author’s own copy of his 
‘Systema.’ 
Poluta rufa, 
The earlier writers have not succeeded in identifying this 
species. Schréter and Gmelin have copied the Linnean de- 
scription, but appended a note of interrogation to the reference 
to Gualtier, whose uncertain figure somewhat reminds one of 
Mitra aurantia, yet cannot be pronounced to be it: Dillwyn, 
deferring to the authority of Solander, considered it to be 
identical with the Mitra adusta of Lamarck; Deshayes has 
hinted that either M. crenifera or versicolor would prove a 
better substitution. Linnzus having declared his possession 
of an example, and an analysis of his collection (where none of 
the previously mentioned Mitres are to be found) having de- 
monstrated that one species alone (texturata might perhaps be 
excepted, but that is already appropriated) of its entire contents 
will answer to the description, no reasonable doubt of the typical 
authority of that specimen can be entertained. It has been 
thought desirable to figure it (pl. 4, f. 5), smee it presents certain 
peculiarities specified by Linnzeus, which are not displayed in 
any published drawing that I can at present discover. Martini’s 
figures 1380, 1381 form the nearest approach ; these have almost 
invariably been referred to M. ferruginea (delineated by Swain- 
son in plate 66, f. 2 of his first series of ‘ Illustrations’). The 
spotted colouring of the specimen (‘‘incarnato” with Linneus 
has the signification of orange rather than flesh-colour, as we 
learn from his account of the well-known Strombus pugilis in the 
‘Museum Ulrice’) is not the ordinary painting of ferruginea ; 
and the recuryation of the outer lip, which is edged with con- 
spicuous rounded tubercles, precisely accords with the features 
specified in the description: strictly speaking, there is a fifth 
obscure fold (Lamarck describes ferruginea as “ subquinque- 
plicata’”’), but Linneus was not wont to reckon any but the 
decided exterior ones. 
