90 SPECIES OF THE SYSTEMA. 
former of which, apparently selected by Dillwyn as preeminently 
the gryphoides of Linneus, was assuredly comprehended in it 
by our author, as the numerals 137 (its number in the tenth 
edition) on an example in his cabinet plainly demonstrate; yet 
this evidence is invalidated by the numerals 129 (Zazarus in 
ed. 10) upon another example of the same richly-coloured West 
Indian species. All the information therefore to be derived 
from the marked specimens is simply this, that Linneus was in 
doubt whether to refer the macerophylla to Lazarus or to gry- 
phoides, and that consequently the examples were not con- 
sidered by him to be preeminently typical of either. This 
conclusion is strengthened by the locality authenticated by 
Brander, and the expressions “ valvule alba —punctis muri- 
cate,’ which suit not the red or yellow tint and the laminated 
sculpture of macerophylla, but are truly applicable to that 
Mediterranean shell for which Lamarck, whose synonymy, 
however, is incorrect, and whose description of it is insuffi- 
cient, has retained the appellation. Either this conclusion 
must be adopted, or, acting upon the principle that Linnzus 
has not truly defined either species, that one must be termed 
gryphoides which may first have been clearly separated from 
its congeners with that appellation. 
‘ 
Chama Dicornis. 
The Chama bicornis of Linneus, as Bruguiére has saga- 
ciously observed, was founded upon an erroneous impression 
that the two views of the same long-beaked valve delineated by 
Colonna, and copied by Klein and Lister, were representations 
of the twin valves of a bivalve shell. The characteristics of the 
species being imaginary and fallacious, the name must be sup- 
pressed. Some eroded single valves with greatly produced 
beaks, of either the Italian (gryphoides of Lamarck)-or the 
common West Indian (macerophylla of Chemnitz) Chama 
appear to represent this shell in the Linnean cabinet. 
