13 
of a new Coleopterous Genus. 
the circular chain connecting all the xylophagous Coleoptera, and 
especially the three principal genera of the tribus Prionii of Latreille 
(Regne Animal, 2e edit.), viz. Spondylis , Parandra, and Prionus, 
with its numerous subgenera. 
H aving already mentioned some of the corresponding characters 
between Parandra and Torneutes, I have only to add, that the latter 
is distinguished by its twelve, not eleven-jointed antennse, by its 
straight (not filiform) mandibles, by its rounded (neither depressed 
nor margined) thorax, by its short and stout feet, and by the absence 
of that singular appendage between the two lobes of the penulti- 
mate joint of the tarsi, characterising the larger species of the genus 
Parandra, whence it cannot be thought proper to unite them in 
the same genus : and however there may exist some resemblance 
between the genus Spondylis and that of Torneutes , in their ex- 
ternal form, and especially their thorax and habitus, there are 
yet essential differences in the internal structure of their mouth 
and in their legs, so that it will be equally impossible to arrange 
them together. It seems, therefore, indispensable to place this 
new genus at the head of the Prionida, immediately in connection 
with the family to which Parandra is removed, but of which last- 
named genus the economy is identical with that of Torneutes. 
Four specimens of Torneutes pallidipennis have been sent to 
me, agreeing in every respect. One of them has been presented 
to the Royal Collection of the University of Berlin ; two (one with 
mutilated mandibles) are preserved in my own Collection ; the 
fourth, destined for the Collection of the President of the Entomo- 
logical Society, has been lost on its way to England, and was dis- 
tinguished by a rudiment of a second small lateral abbreviated line, 
which is to be seen in the annexed figure. 
The name is derived from the Greek word ropvEvrne, tornator, 
alluding to its corroding the bark and wood of a high tree, un- 
known to me, in the province of Enlre Rios. 
It is clear, that the natural character of a genus, borrowed from 
a single species, may be very likely to embrace many of those marks 
which are rather diagnostics of the species itself. I hope, there- 
fore, to be excused, if in case of any further increase of the number 
of species belonging to the new genus Torneutes, a modification of 
its generic character, as it is established in this essay, should be 
found requisite. 
Berlin, Aug. 1835. 
