COLEOPTERA. 
157 
the rostrum. This genus very much agrees with Microcerus, in 
the construction and station of its non-geniculate antennae; it also 
shows no sexual difference in the shape of the rostrum. The two 
anterior rings of the abdomen are constructed just as in that group, 
as well as in many of the Curculionideous epigean species, and, indeed, 
Schonherr was right in uniting them in his former work (Curculionid. 
Dispos. Method, pp. 8 and 78). 
3rd. I rather admit of the Antliarhinides being better placed 
amongst the Attelabidae than with Erirhinides, as Imhoff (loc. cit. ii. 
pp. 210 and 217) proposes. At least, they bear a greater resemblance 
to some Baridides, viz., Nanus, &c.; and by their exposed pygidium 
and their distant anterior coxae they rather remind one of the 
Apostasimerides. 
4th. Oxyrhynchus evidently belongs to the Rhynchophorides or 
Calandrides; the non-geniculation of the antennae being a secondary 
character compared to their insertion and the highly peculiar con¬ 
stitution of their club. Indeed, Fabricius had seen well. The Calan- 
dridae are so distinct from the other Curculionides, that they claim an 
equal rank in classification. 
5th. Ithycerus is constituted so much like the Gonatoceri Bra- 
chyrhynchi, that I think its natural place should be there, although its 
antennae are non-geniculate and the antennal groove of its rostrum 
obliterate. 
6th. Rhamphus undoubtedly is a modification of Orchestes. 
7th. Tachygonus certainly is a Ceutorhynchus-like form, and has 
nothing to do with Rhamphus. 
After those eliminations, the Orthoceri of Schonherr, until now so 
very heterogenous, might be reduced to four well-marked types, each of 
them having a value equal to that of the old genus Curculio of Linnaeus, 
although much less numerous in species ; these should be :— 
1. Brenthidae, connecting the Rhynchophori of Latreille (Curcu¬ 
lionides, Sch ., Paeodognathica, 7mA.) to the other Baculicornia of 
Imhoff (Colydii, Cryptophagides, Cucujides, Rbysodides, Parandridae 
and Hypocephalides, loc. cit. ii. pp. 159—170). Indeed, they bear 
a very slight likeness to the other Curculionidae. 
2. Bruchidae, linking the Curculionidae to the Chrysomelidae. 
