18 SPECIES OF THE SYSTEMA. 
in truth, the distinctive characters are by no means con- 
spicuous. The cinereus of the earlier British writers is not 
present. 
LE ees: 
The very bad condition of the majority of the Cirripedes in 
the Linnean cabinet, and the absence of appended numerals 
to the specimens, prevent much aid being derived from an 
examination of the types. 
Lepas balanus. 
The large Northern Balanus, so characteristically delineated 
by Born (Test.. Mus. Vind. pl. 1, f. 4), as the Linnean 
Species, answers so correctly to the various descriptions of 
its features in the different works of our author, who first 
separated it from the succeeding species, with which, in the 
tenth edition of his ‘Systema,’ he had confounded it, in his 
‘Fauna Suecica,’ that it has been generally, and with reason, 
accepted as its representative by succeeding writers. It has, 
however, from the elevation of its specific epithet to a generic 
appellation, received many different names, among which may 
be mentioned B. sulcatus in Bruguiére’s monograph, and 
B. Scoticus in Wood's ‘General Conchology. The Lepas 
balanus of the last-named work (pl. 7, f. 8) is a very different 
species, which does not so well suit the “ operculis acuminatis” 
of the ‘Systema,’ or the “operculum quatuor valvulis com- 
positum, acumine longo claudatur oblique mucronato’’. of the 
‘Fauna Suecica.’ 
The synonymy is deplorably bad, but as no satisfactory repre- 
sentation of the species apparently designed was in existence, 
we could not expect a very correct one. Leuwenhoek’s eighty- 
second epistle is concerning the human tongue; Gualtier’s 
