412 SPECIES OF THE SYSTEMA. 
Linnean cabinet, and an excellent figure of it, ‘“ Mart. Syst. 
183, t. 15, f. 144,” has been referred to as illustrative in the 
revised copy of the ‘Systema.’ The examples agree fairly 
with the description of the species in both the ‘ Systema’ and 
the ‘Museum,’ unless possibly the “ spira humilis” of the latter 
should be considered objectionable. 
Haltotis maruorata. 
Not only is the account of this species in the ‘Systema’ 
most unsatisfactorily brief, but even the details in the ‘Museum 
Ulrice’ are inordinately scanty. The illustrative figure in 
Argenville is too ill executed to be recognisable, and, moreover, 
exhibits no vestiges of the “striis longitudinalibus” of the 
diagnosis. It is not very easy, either, to identify Martini’s 
ideal of this Haliotis (perhaps for want of specimens); his 
painting (Conch. Cab. i. f. 139), apparently taken from a cut 
specimen, does not exactly resemble any of those in Reeve’s 
Monograph of the genus, yet reminds one in many respects of 
rosacea and virginea (distinct ?), an example (Humph. and Da 
Costa, Conch. pl. 9, f. 3) of the latter of which is preserved in 
the cabinet of Linneus (whose son has affirmed the presence of 
marmorata in the collection of his father), and corresponds 
more aptly with the description in the ‘Systema’ than any 
other object there present. Mérch has suggested the proba- 
bility of this identification (Cat. Conch. Yoldi). I am far from 
urging the adoption of the Linnean appellation on this account, 
for in truth the species was too inadequately defined for any 
assured recognition. 
The older conchologists (Kiimmerer, Bolten, Gmelin, Dillwyn) 
had apparently fixed upon a shell which they regarded as this, 
and for which they unanimously cited Martini, f. 139, and 
Knorr, 11. t. 17, f. 4, 5, as illustrative ; the rest of their synonymy 
is for the most part so contradictory, that it becomes diffi- 
cult to decide what they intended under this appellation. 
Schréter has so boldly charged Linneus with particularising 
accidental and omitting essential features, that one naturally 
doubts whether the specimens he has described belonged to 
the species; they seem to have been some such shell as the 
