RHYNCHOPHORA. 
259 
Liosomus, a mere fraction of Molytes in size, repro- 
duces exactly its superficial characters, differing, how- 
ever, in the rostral scrobes, the structure of its antennae, 
and the shortness of the spurs to its tibiae. It abounds 
in wet places. 
Pl/inthus, found in dry situations on chalk by the 
coast (Dover, &c.), and less commonly in grass, &c., 
inland, is of very different shape from any of the pre- 
ceding, being more linear, with no scutellum, the 
rostrum longer than the head, and slightly contracted 
at the base, &c. ; it is very strongly and coarsely punc- 
tured, the punctures being often filled up with chalk, 
so that the normal dull pitchy-black colour of the 
insect is disguised. 
Pissodes, resembling ITylobius, though on a smaller 
scale, frequents pine forests ; one species, P. pini, 
abounding in many parts of Scotland, where I have 
seen the female with her rostrum deeply buried into 
the soft part between the outer bark and solid timber 
of fresh-cut fir-trees. In the hole thus formed an egg 
is deposited, the larva proceeding from which eats 
galleries under the bark until it is full grown, when 
it closes its retreat with particles of wood, frass, &c., 
and changes to pupa. The perfect insects are very 
prettily marked, being rich brown with golden-yellow 
spots : like Hylobius, they cling very tightly to the 
fingers when handled. 
The Erirrhinina, as usually constituted, consist of a 
somewhat heterogeneous assemblage ; a considerable 
number of them have now been referred to separate 
tribes; their antennae are either eleven- or twelve- 
jointed, with the club usually four-jointed; their an- 
terior legs are approximated at the base, and the 
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