66 SPECIES OF THE SYSTEMA. 
Venus cancellata. 
The Venus cancellata of Lamarck (Chemn. Conch. Cab. 
vol. vi. pl. 28, f. 290) and others still remains in its marked 
box in the Linnean cabinet, and alone in the collection agrees 
with the description and amended synonymy. One specimen 
has even the name written on it; but the handwriting seems 
scarcely that of our author. It is somewhat curious that the 
same name was applied, in 1781, to the same species in Gro- 
novius’s ‘ Zoophylacium,’ although the tenth edition only of the 
‘Systema’ had been consulted (or at least referred to) for the 
Veneres. 
It has been plausibly suggested that, as the V. ziczac of the 
‘Museum Ulrice’ was referred to as a synonym, it behoves us 
to adopt that name; but that work again reproduces the essen- 
tial characters specified in the tenth edition of the ‘Systema,’ 
the “lentiformi” of which is so utterly inappropriate for a 
heart-shaped shell, that no one could have recognised the 
V. cancellata (a most expressive appellation) by such a descrip- 
tion. The omission of all mention of the radiating costelle in 
the ‘Museum Ulric’ raises, moreover, a suspicion that the 
described specimen of that collection was not identical with the 
cancellated or typical form (“striis longitudinalibus”) of the 
‘Systema.’ Our author, in his revised copy, has correctly cited 
“ List. t. 278” (a reference which he has correctly transferred 
from Dysera), and added “lab(ia) truncata” to his previous 
description. 
The “ Gualt. t. 88, f..D” was probably meant to illustrate 
the anomalous variety (for a cancellated shell) “absque his 
(i.e. longitudinalibus) striis”: it reminds one much of calo- 
phylla, and was previously quoted for the var. e of Dysera in 
the ‘Museum Ulrice.’ 
Venus gallina. 
Specimens of the Venus gallina of the Mediterranean Sea 
(Chemn. Conch. Cab. vol. vi. pl. 30, f. 809) are enclosed in a 
