RHYNCHOPHORA. 
255 
and thinner legs and antennae, and the possession of 
long and distinct rostral grooves for the antennae. 
The sub-family Cdrculionina: contains by far the 
majority of the Ehynchophom, and is made up of very 
divergent forms, many of which exhibit relationships 
to other families ; they are, however, all connected by 
the fact that the mandibles have no scar (left by 
deciduous mandibles) at the anterior external angle 
of the rostrum j they have been divided into a largo 
number of tribes (which probably will have to bo 
reduced), the chief of which may briefly be noticed. 
The Sitonina, distinguished by having the mandi- 
bles thickly punctured and pubescent on their surface, 
not toothed and curved at apex, contain the single 
genus Sitones, which comprises many species, espe- 
cially noxious to clovers and trefoils, many of them 
abounding at all times of the year j the commonest is 
S. lineatus. They are small, rather elongate, greyish 
or brownish insects, which are very troublesome to 
beginners, owing to their great likeness to one another. 
They have been fully described by the author in the 
Entomologist’ s Monthly Magazine, vol. ii. 
The Gronopina, have a more or less distinct excava- 
tion in the prosternum for tho reception of the rostrum, 
the scrobes of which are linear and arched ; the eyes 
large, depressed, entirely covered in repose by the 
lobes of the prothorax, which are very prominent ; 
the metasternum very short; and tho tarsi spinose, 
or hairy beneath, never spongy. 
We possess but one genus and species, Gronops 
lunatus, in which the second joint of the antennae is 
very elongate ; it is a small dull-white or grey insect, 
strongly ribbed, with a narrow thorax, wiry legs, and 
