COLEOPTERA, 
443 
Sometimes the antennje insensibly enlarge towards the extremity, 
or gradually terminate in a elub ; the intermediate joints, from the 
third, are nearly in the form of a reversed eone ; the two or four 
penultimate joints form reversed triangles, and the last is ovoid. 
Thanasimus, Lat. — Clerus, Fab. 
The maxillary palpi filiform ; last joint of those attached to the 
labium large and securiform *. 
Opilo, Lat, — Notoxus, Fab. 
The four palpi terminated by a large securiform joint f. 
Sometimes the three last joints of the antennae are much wider 
than the preceding ones, suddenly forming a club, either simple and 
in the form of a reversed triangle, or serrated. 
I’hose, in which this club is simple or not serrated, form two sub- 
genera. 
Clerus, Trichodes, Fab. 
The maxillary palpi of these Cleri, properly so called, are termi- 
nated by a compressed joint in the form of a reversed triangle ; the 
last of those that belong to the labium, which are larger than the 
others, is securiform. The antennal club is hardly longer than wide, 
and is composed of crowded joints ; the third is longer than the se- 
cond. The maxillae terminate in a projecting and fringed lobe. The 
thorax is depressed anteriorly. 
These Insects are found on flowers; their larvae devour those of 
certain Bees. 
Their stomach is widest anteriorly, and without plicae ; their in- 
testine is short, with two enlargements behind. According to M. 
Dufour, their crop is so short that it is almost entirely concealed in 
the head J. 
C. apiarius ; Attelabus apiarms, L. ; Trichodes apiarius, Fab. ; 
Oliv., Col. IV, 76, 1,4. Blue; elytra red, traversed by three 
bands of deep blue, the last of which occupies the extremity. 
I’lie larva devours that of our domestic Bee, and does much 
injury to hives, 
C. alvearius ; Trichodes alvearius. Fab. ; Oliv., Ib., 1, 5, a, b; 
Reaum., Insect., VI, viii, 8 — lO. Almost like the preceding, 
but with a bluish-black spot on the scutel. It inhabits the nests 
of the Mason Bees — Osmia — of Reaumur, and feeds on their 
larvae. 
Necrobia, Lat. — Corynetes, Fab. 
The four palpi terminated by an elongated, compressed, triangu- 
* Attelabus formicarius, L. ; Clerus formicarius, Oliv., Col. IV, 76, 1, 13; — 
Clerus mutillarius, Fab. ; Oliv., Ib., I, 12. 
•f- Attelabus mollis, L. ; Clerus mollis, Oliv., Ib., I. 10. 
X The genital organ of the male is much more complicated than that of the Mely- 
rides, Lampyrides, and other Malacodermi. The last abdominal annulus is widely 
emarginated. They and the Peltes of Fabricius are the only Coleoptera wliich have 
six biliary vessels — they are inserted into the cEecum. 
