POSTSCRIPT. 
257 
but the short stalk, and carinated back valve, will at all 
times sufficiently distinguish the L. anserifera. This latter 
circumstance, of the black valve being carinated, induced 
Bruguiere and Mr. Wood to consider the toothed variety 
as a distinct species. 
Lepas sulcata, p. 72. 
Variety. The front margin of the upper pair of valves 
fringed with four or five projecting sharp spines, giving it 
much the resemblance of the cartilage side of Venus Dione: 
and the edges of the back valve serrate or slightly toothed 
towards the base. 
Lepas punctata, p. 7^. 
Variety . On a long stalk, like the L. elongata. 
This variety we found abundantly on the projecting rock 
which separates the Dawlish and the Warren sands. 
Murex antiquus, Variety , reversed, p. 89. 
Lister’s figures have every appearance of fossile shells ; 
and it is probable that Lister himself considered them as 
such; as at pl t 907- f- 27- he remarks, that the Murex per- 
.versus was the only left-handed marine shell which had 
ever come under his inspection : sola cochlea e marini3 
cst, quantum hactenus vidi, quae e dextra sinistrorsum tor- 
quetur:” and at lot 2004 of the Portland Catalogue, a re¬ 
versed Murex is mentioned as a petrifaction from Harwich, 
Linne and Gmelin, however, admit a recent reversed spe¬ 
cies, much allied to Murex antiquus, under the name of 
M. contrarius, referring to Lister’s plate 950, for a repre¬ 
sentation of it. In the Portland Catalpgue it is exhibited 
as a variety only, as the lot 4020 is described, “Murex 
antiquus, h. and a reversed one, extremely scarce, named 
by L. Murex contrarius : ” hut its country is not mentioned. 
This lot was sold to Mr. Dillon for two guineas. 
Nerita sulcata, p. 124. 
Lister , pi, 607- f. 41 ? 
Lister marks this as English, describing it, lineis un- 
datis rarioribus per obliquum depictus. His figure exhi¬ 
bits a gi'OQved appearance, but his words may imply n °t 
9 ‘ ?a thing 
