250 
BRITISH BEETLES. 
on hazel ; its larva, conspicuous in this section for the 
possession of large dorsal tubercles, living in cylin- 
drically rolled-up leaves of that plant. 
The species of JRhynchites differ from the two just 
mentioned, in having the external border of the man- 
dibles cut out into large teeth, and the tibiae, as a rule, 
simple and not toothed on their internal margin. 
Rhynchites betuleti, a very lovely species, found not 
uncommonly at Darenth on the hazel, pierces the top 
shoots of that plant so as to arrest their growth, after 
having deposited an egg in them. Other species have 
been observed to lay an egg in the recently-formed 
fruit of wild trees, afterwards duly making an incision 
below, so as to impede its proper development, the 
larva finding sufficient nourishment before the fruit 
falls to the ground. R. sequatus (Plate XI., Fig. 5) 
is occasionally found in profusion in the flowers of 
the whitethorn. 
With these insects terminates the division Isotoma 
of Thomson, distinguished by the connate abdominal 
segments, of which the second and third are nearly 
equal, the antennas straight, &c. : his other division, 
Anisutoma, has the three apical segments free, the 
second being much longer than the third, the antennas 
usually elbowed, &c. 
The Apionin/E have tho rostrum long, arched, cylin- 
drical, and sometimes subulate (i.e. suddenly con- 
tracted before the apex), with its scrobes more or less 
distant from the mouth, and the antennas inserted 
towards its middle, or base ; the head more or less elon- 
gate behind the eyes ; the trochanters very large, and 
separating the femora and the coxae ;* the scutellum 
* This peculiarity is also found in Nanophyes, and Bedel 
