RHYNCHOPHORA. 
245 
tho text-book of Coleopterists devoted to this section), 
the Rhyjichophora are divided into two sub-sections, 
the Orthoceri, in which the antennas are not elbowed, 
with the basal point slightly elongated ; and the ros- 
trum has no distinct lateral grooves for the reception 
of the basal joints of the antennm; — and the Gonato- 
ceri, wherein the antennae are more or less distinctly 
elbowed, the basal joint being usually elongated, and 
always received into a canal at the side of the rostrum. 
The latter sub-section is separated into two groups, 
the Brachyrrhynchi, having the rostrum short, straight^ 
and thick, with the antennm inserted near its extre- 
mity, and mostly twelve-jointed ; and tho Mecorrhynchi, 
in which the rostrum is eylindric or filiform, more or 
less elongated (being seldom shorter than tho thorax), 
and with the antennse inserted before or near the 
middle, never near the mouth orifice. 
The late Mr. Walton has published many papers in 
the “ Annals and Magazine of Natural History ” 
(1844), in which are descriptions of, and useful re- 
marks upon, mauy of our species of Weevils. 
As before remarked, all the Rhynchophora are vege- 
table feeders ; and, although comparatively harmless 
in their perfect state, there is not one part of any tree 
or plant, or its product, that their larvae do not 
attack. 
These larvae, of which the grub of the nut-weevil 
( Balaninus nucum), so often found in filberts, &c., is 
a good typo, — are fat, fleshy, and cylindrical ; slightly 
attenuated in front aud recurved behind, with a round 
horny head, and no legs, which are represented by 
tubercles or callosities set with short bristles. Al- 
though usually adhering to one particular plant 
