328 SPECIES OF THE SYSTEMA. 
minute species an almost hopeless task, the locality, being 
taken as a limiting characteristic, has accomplished it. For 
the richly variegated colouring, minuteness of size, form of the 
mouth, and perfect smoothness of surface, are features com- 
bined in so few Mediterranean shells (the expression “ ovata” 
discriminates it from Vieuxii, &c.) that almost universal assent 
points to the Phasianella pullus of authors as its representative. 
Many specimens of this shell (Donov. Brit. Shells, vol. i. pl. 2, 
f. 2 to 6) are still preserved in the Linnean cabinet, where no 
other objects (and its presence therein has been recorded) 
equally suit the entire definition. 
Turbo personatus. 
The cited drawing of Rumphius undoubtedly represents the 
Turbo variabilis of Reeve (Conch. Syst. vol. i.), and if that 
beautiful species, so closely allied to, and so habitually con- 
fused with, 7. petholatus as to render it unlikely that our 
author would discern more than varietal distinctions between 
them, will correspond in characteristics with the few features 
specified in the original description, no hesitation need be felt 
in admitting its identity with the species under consideration. 
Morch, in referring to personatus “Gualt. t. 64, T” (as the tenia 
of Meuschen) intends, I presume, the same Turbo, and is satis- 
fied with this identification, to which, provided we limit it to 
the ‘Systema’ solely, I am disposed to assent. From the ex- 
pression ‘‘ convexa,”’ indeed, one might have expected a some- 
what more depressed form; it must be recollected, however, 
that its shape is so when compared with the contour of the 
adjacent congeners. 
What the species of the ‘Museum’ was I am at a loss to 
conjecture. It is described as no larger than a filberd-nut, 
having the aspect of a Nerite, dotted with blackish brown 
upon an ash-coloured ground, and with a pearly aperture. 
Can it have been some such shell as the T'rochus (!) crassus 
(Donov. Brit. Shells, vol. ii. pl. 71), of which one or more 
specimens may be descried in our author’s cabinet ? The Turbo 
variabilis is not present in the collection. 
