408 SPECIES OF THE SYSTEMA. 
Deshayes, and by the laborious Récluz. The description of it 
by the former, in his edition of the ‘ Animaux sans Vertébres’ 
(vill. p. 616), so admirably coincides with the detailed account 
of it in the ‘Museum Ulrice’ that scarcely a doubt of the 
accuracy of this identification any longer exists. 
evita exubta. 
That the Nerite (Encycl. Méth. Vers, pl. 454, f. 1) which 
ordinarily bears this name among collectors should ever have 
been selected as the representative of the Linnean species is 
surprising; for not one of the twelve figures referred to as 
illustrative correctly exhibits its well-known features. A most 
contradictory synonymy, which comprised half as many species 
as references, accompanied the utterly insufficient description 
of the tenth edition of the ‘ Systema.’ Among the shells there 
indicated may be specified Nerita Malaccensis of Lamarck 
(Petiver), N. costata (Argenville), N. Listert of Récluz (Lister: 
the section quoted should have been 6, for 1 contains the per- 
forated limpets), Neritopsis radula (Rumphius; the unquoted 
figure 3 of the sarhe plate exhibits the Lamarckian exuvia), &c. 
The first of these has been selected by Dillwyn, Deshayes and 
Récluz as the representative of the Linnean species; an iden- 
tification supported by the circumstance that it (Knorr, Dél. 
Yeux, iii. pl. 1, f. 5) is the only one of the Nerites just men- 
tioned which is present in the cabinet of Linnzus (who has 
recorded his possession of an example), and by the “ Color 
ater albo undulato lineatus” of his manuscript. A careful 
perusal of the description in the ‘Museum Ulrice’ leads to 
the same conclusion. For although the N. exuvia of Lamarck 
agrees in most respects with the details there specified, it 
does not correspond with “nigricans—undatis lineis trans- 
versis (1. e. concentricis) albidis;” his Malaccensis, on the 
contrary, answers alike to that passage, and to the remainder 
of the description. This perfect accordance can be affirmed 
of no other species of the many grouped together by the 
synonymy; such an identification, moreover, accounts for the 
erroneous reference to Lister and Argenville, whose en- 
gravings exhibit the blackness and coarse ribbing characteristic 
