214 RHYNCHOPHORA. 
a*, Mandibles thickly punctured and pubescent on their surface, 
sharp and without a tooth on their internal edge, and curved 
into a-sharp hook af apex 2s 6 5 so fe se 
b*. Mandibles glabrous, or rarely furnished with a few patches 
of rough hairs, on their upper surface, bilobed at apex or den- 
tate on their inner side before apex. 
at. Posterior margin of the second segment of the abdomen 
“produced at each side and extending over the third segment 
to the base of the fourth . . : 4 .. - Soba 
b+. Posterior margin of the second segment of the abdomen 
distinct in all its extent from the base of the fourth. 
at. Epimera of mesosternum not extending between the 
thorax and elytra and with its extremity invisible from 
above ; anterior coxee usually contiguous. 
*  Tarsi without onychium, and terminating at the third 
joint, which is strongly dilated . . . 2. . ss 
**. Tarsi normal, furnished with onychium. 
+, Posterior femora strongly thickened and adapted 
for leaping ; eyes almost meeting on upper surface 
OTC PAF LS SARGENT AG Orta NEE RS aE 
++, Posterior femora not adapted for leaping ; eyes 
widely separated on upper surface of head. 
+, Tarsal claws connate. 
aa*, Eyes widely separated beneath by the rostrum 
which is stout and, as a rale, nearly as wide as 
head; tibize armed with a large hook or tooth at 
apex ; size large . a alah a Sete OF See RC 
bb*. Eyes almost meeting beneath rostrum, which is 
slender, or comparatively slender, and much 
narrower than head ; tibize armed with a small 
tooth ; size small or very small . . 
tt. Tarsal claws free, 
aa*, Eyes extremely prominent ; tarsal claws almost 
alwaysappendiculate . .. . ++ .s -» 
bb*. Eyes not or scarcely prominent ; tarsal claws 
not appendiculate. 
aa}. Surface of thorax uneven and in places exca- 
vate ; eyes vertical; uppersurface scaly . . 
bb}. Su: face of thorax smooth or slightly uneven 
in front, but not excavate. 
aat. Tarsal claws strongly toothed at base on 
theinrmnderisidenge Ga sik. ce os 
bbt. Tarsal claws simple. 
aaa*. Elytra broadlyandseparately rounded at 
apex ; anterior coxze narrowly separate. 
bbb*. Elytra jointly rounded or separately 
acuminate at apex; anterior coxe 
contiguous. 
aaat. Third joint of tarsi very short be- 
hind base of onychium, strongly 
bilobed. 
aaat. Posterior tibice without or witha 
very obsolete hook at apex; ros- 
trum not carinate; trochanters 
without a long projecting seta 
bbbt. Posterior tibize with a more or less 
strong hook or spur at apex; 
[ Curculionine 
SITONINA, 
TYCHIINA, 
ANOPLINA, 
ORCHESTINA, 
LIXINA. 
SMICRONYCHINA. 
ANTHONOMINA,. 
GRONOPINA, 
ELLESCHINA. 
ACALYPTINA. 
HYPERINA. 
