6G 
THE ORDER OE OOLEOPTERA. 
Cucvgus, Fill)., contains but one N. A. species, the G. clmipes, Fab. ; 
Catogenus, Westw., one, the G. rufus, Fab. ; Lamophlam, Lap., ten spe- 
cies ; Brontes, Fab., three species ; and Silvanus, Latr., nine species. ^ 
The word Gucvjus comes from the Brazil ian Gucuyo and Spanish On- 
cujo, a name given by the natives to the luminous snapping-beetle 
( E later noctilucus, Linn.) of South America. 
Family XXI. COLYDIIDiE. 
This family includes two principal types. In one, forming the sub- 
family Colydiides, the species are elongate and cylindrical, with ribbed 
or striate elytra, and in the other, or the sub-family of Syuchitides, the 
species are simply oval or oblong, somewhat flattened, and remarkable 
for their rough or spinous bodies. The antenme are either moderately 
and gradually clavate, or terminate in a small club, which usually in- 
cludes but two joints. The tarsi are all strictly four-jointed. These 
insects have the same carnivorous habits which seem to be common to 
most of the species included in our division ot sub-clavicornes. the 
larvae of Ditoma, of Aulonium, and of Gerylon, have all been seen depre- 
dating upon the larvae of Tomicus and other small wood-boring beetles, 
and one species, at least, the Gerylon histeroides, is equally predaceous 
in its perfect state. 
Forty-four N. A. species have been described. 
Family XXII. LATIIlilDIID-dS. 
Very small and not very common insects, sometimes found under 
stones and sometimes caught flying. They are of an oblong form, the 
abdomen being wider than the thorax. The antennae terminate in a 
small club of one, two, or three joints. The tarsi are three-jointed, the 
last joint being at least as long as the other two. The thorax has a 
raised border, and the elytra are puncto-striate, and ribbed between 
the striae. 
About fifty N. A. species have been described. 
Third Sub-Bection, MONILICORNES. 
Antennae often moniliform or bend-like ; subsist moetly upon decaying vegetable substances. 
TttIBE V. 
SHORT WINGED SCAVENGER-BEETLES. 
Putrivora brevvpennata. Braohelytra, Latieille. 
This tribe embraces an extensive series of beetles, corresponding, for 
the most part, to the Linuiuan genus iSlaphylhim, sometimes called in 
English Rove-beetles, and readily distinguished from all other Ooleoptera 
