448 
INSECTA. 
Hyleccetus, Lat. — Meloe, Canthaeis, Lin. — Lymexylon, Fah. 
H. dermestoides ; Meloe Marci, L., the male ; Lymexylon 
morio. Fab.; L. prohoscideum.lA.', Cantharis dermestoides, L., 
the female; H. dermestoides. Fab., Id.; Oliv., Col., 11,25; I, 1, 
2, It. The female is six lines in length ; pale-fulvous ; pectus 
and eyes black. The male is black ; the elytra sometimes 
blackish, and sometimes reddish, with a black extremity. Ger- 
many, England, and the north of Europe. 
There, the antennae are simple, slightly or not at all compressed, 
and almost moniliform. The thorax is nearly cylindrical. 
Lymexylon, Fah. — Cantharis, Lin. — Elateroides, Schceff. 
L. navale. Fab., the female ; L. jlavipes. Id., the male; Oliv., 
Ib., 1 , 4. Length of the preceding, but narrower ; pale-fulvous ; 
the head, exterior margin, and extremity of the elytra, black ; 
the latter colour rather more predominant in the male. This 
Insect is very common in the Oak forests of the north of 
Europe, but rare in the vicinity of Paris ; its larva is very 
long and slender, almost resembling a Filaria. It multiplied so 
excessively in the dock yards at Toulon some years ago, as to 
destroy great quantities of timber*. 
In the others the palpi are very short, and similar in both sexes f. 
The antennae are always simple and of equal thickness throughout. 
The tarsi arc short, and the penultimate joint in some is bilobate. 
The body is of a firm consistence, the top of the head unequal or 
sulcated, and the thorax nearly square or suborbicular. 
Cures, Fab. 
Joints of the antennae almost cylindrical ; penultimate joint of the 
tarsi bifid, mandibles unidentated under the point ; palpi, maxillae, 
and ligula exposed, the latter bilobate; mentum nearly semi-or- 
bicular. 
Two species are known, both proper to North America 
Rhysodes, Lat. Dalm. 
The antennae granose and all the joints of the tarsi entire. The 
mandibles appear to me to be narrowed and almost tricuspidate at 
the end ; the mentum is corneous, very large, clypeiform and termi- 
nated superiorly by three teeth or points ; the palpi are very short. 
* The Lymexylon jtrohoscideum of Olivier, from which he took his description, 
and which is now in tlie cabinet of Count de Jousselin of Versailles, should form 
a separate genus. See also the Lymexylon flahelliconie of Panzer, Faun. Insect. 
Germ., XI, 10. 
f The last joint, at least that of the maxillary palpi, is somewhat thicker and 
almost ovoid. 
X Cupes Capiiala, Fab. ; Lat., Gener. Crust, et Insect., I, viii, 2 ; Coqueb., 
Illust. Icon. Insect., Ill, xxx, 1. 
