INSECT A COLEOPTERA. 
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an oblong and slightly hatchet- shaped terminal joint, the hind legs long, 
the hind tarsi, at least the first three joints, without membranous ap- 
pendages : E. Jiliformis, Lap., from Madagascar. 
V. Ptychopterus. (This name cannot be a good one, on account of 
the dipterous genus Ptychoptera. In the first plan of this work, which 
was contained in the “ Monatsberichten der Acad.” of 1837, the genus 
was named Placoceru8, and it is only by mistake that this name has 
not been retained.) Labial-palpi long, with a triangular terminal joint ; 
antennas broad and flatly compressed from the third joint, short, broadest 
in the middle : P. dimidiatus, the only species, from Cafferland. 
VI. Axina, Kirby : containing a single species, analis, Kirby, not 
ditferent, perhaps, from the rujitarsis, Perty. 
In the following genera the first tarsal joint is so much shortened 
that the tarsi are apparently four-jointed. 
VII. Opilus (Notoxus, F.) — 1. Maxillary-palpi filiform, appendage 
of the tarsal joints undivided : 0. porcatus, F. 
In all the following, the terminal joint of the maxillary-palpi is hatchet- 
shaped. — 2. Antennae proportionally thin ; appendage of the tarsal joints 
lobed: O. mollis, L., domesticus, St., pallidtis, 01., univittatus, Ross. 
(fasciatus, Steph.), and six new species, tceniatus from Ragusa, thoraci- 
cus from Macedonia,/ro^^^aZ^s from Constantinople, tropicus from Sennaar, 
cinctus from Senegal, ohscurus from the Cape. — 3. Like 2, but the ter- 
minal joint of the antennae double the length of the preceding : inter- 
ruptus from Senegal, hasalis from Sinai. — 4. Like the preceding, but the 
ninth and tenth antennal joints turbinate, the eleventh almost as long as 
all the rest together ; suberosus from Madagascar. — 5. The last three an- 
tennal joints dilated ; in other respects like the preceding, a. Body of 
the more common oblong form ; tristis, and callosus from Madagascar, 
from Van Diemen’s Land. b. {Plcttyclerus, Body broad 
and flat : planatus (Cleruspl., Lap.). — 6. {Trogodendron, Guer.) An- 
tennae thickened towards the tips, appendage of the tarsal joints undi- 
vided : fasciculatus {Cl. fasc., Schreib.) 
VIII. Erymanthus, Kl., Spin. ; agreeing with Trichodes in the 
antennae and palpi, habit rather that of Opilus, thighs all thickened, 
tibiae curved, tongue deeply and sharply emarginated, terminal joints of 
the labial- palpi cup-shaped : E. gemmatus, from the Cape. 
IX. Trichodes. The typical Trichodes have distinctly club-shaped 
antennae. There are seventeen species (a great number of which are 
nominal). T. nobilis from Constantinople, and milieus from the Cape, 
are new. A small group peculiar to New Holland, with the antennae only 
a little thickened at the point, forms the genus Zenithicola, Spin., with Tr. 
australis, Boisd., instabilis, Newm., and one new species, Tr. ochropus. 
In the following genera the tarsi are apparently four jointed, as the 
fourth joint is rudimentary and concealed in the emargination of the third. 
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