180 SPECIES OF THE SYSTEMA. 
and agrees with the several descriptions of it in the works of the 
illustrious Swede. In his revised copy he has rightly quoted 
Lister, ‘“‘ Conch. 747 ;” his published reference had been erro- 
neous. The younger Linné, who has added “ Mart. Conch. 2, 
t. 64, f. 517,” has properly erased the faulty synonyms of Adan- 
son and Bonanni. The other references are correct. 
CYPRAA. 
The polished surface of most members of this genus has 
prevented the permanence of the numerals originally written 
on the Linnean specimens. This, fortunately, is of less conse- 
quence, since the majority were either originally well defined by 
characteristic representations, or have been illustrated by fresh 
references in our author’s intended new edition. Seba was but 
sparingly referred to for this genus, owing, possibly, to the in- 
creased difficulty of referring to figures which have not any 
numbers appended to them. When Linnezus, as in citing plate 
76 for instance, mentions a numeral, the position of the figure 
(counting horizontally) upon the plate is alone intended. 
Cyprxa exanthenra. 
The well-known Cyprea exanthema (Reeve, Conch. Icon. 
Cyp. f. 16) is marked for this species in the Linnean cabinet. 
In the revised copy of the ‘Systema’ there is an erasion of the 
erroneous reference to Petiver, which had been correctly quoted 
for C. mappa likewise. ‘The synonym of ‘ List. Conch. t. 698, 
f. 45; t. 699, f. 46,” added in the copy that belonged to the 
younger Linné, indicates more characteristic engravings than 
those originally published, Regenfuss perchance excepted; for 
though figure 18 of Seba is not so unlike an immature exan- 
