264 Dr. Arzertius’s Obfervations on the Genus Paufus. 
defcriptions only from the mouth and the organs for feeding, or 
what he calls In/rumenta cibaria. Thefe defcriptions he has pub- 
lifhed in his Genera Infeclorum, under the name of Characteres 
naturales, in imitation of what Linné had done before in regard 
to plants. 
But as a Charader naturalis, in whatever manner it may be 
made out, does not contain the whole defcription of a genus, or the 
whole account of the agreement between its f{pecies, I would call 
the remaining part Habitus: naturalis, and from the leading points 
of this double ftatement I would form a Charaéter artificialis, to be 
put before the genus in the text of the book, leaving what is 
named Charaéter effentialis, or the moft diftinguifhing marks from 
other genera, out of Charaéier naturalis, to be inferted as ufual in 
the methodical arrangement at the head of the clafs. 
But Pau/fus is a genus fo very unlike all others hitherto known, 
that I cannot find a place for it in this arrangement. Gmelin has 
put it in the divifion, Axtennis clava folida ; and Fabricius with Cero- 
coma in another, Antennis moniliformibus. But, as I have proved 
above, it does not belong to either; nor can it be placed amongft 
Fabricius’s genera Antennis extrorfum craffioribus, becaufe thefe expref- 
fions, without being otherwife defined, are fo vague that they may 
be equally applied to all infects with clavated antennz, as it has 
been done not only by Linné, but alfo by Fabricius himfelf in his 
Philofophia Entomologica, 1am therefore under the neceflity of mak- 
ing a new divifion for Pau/us. 
DESCRIPTIO 
