SNOUT-BEETLES OK WEEVILS. 
137 
ter of an inch in length, with a rough surface and clothed with short 
stiff hairs. We have taken them abundantly in Michigan, under the 
chips placed as traps for the Plum-curculio. Thirteen species of Ophry- 
astes have been described, none of which have been found east of the 
Mississippi river. They are large species covered with cinereous scales. 
The eyes are partly covered by the prominent ocular lobes. The fam- 
ily name is derived from Leptops, (meaning narrow eyed) a genus pecu- 
liar to Australia. 
Sub-family BRACHYDERIDES. 
This sub-family comprises an extensive and considerably heterogene- 
ous assemblage of insects, which, taken in connection with the Otiorhyn- 
chides which follow, constitute the greater part of the division called, 
by Lacordaire, Cyclopthalmes, meaning round eyes, and which are distin- 
guished by the union of the three characters of short snouts, round eyes and 
the maxill® covered by the mentum. The Brachyderides are for the 
most part comparatively large species, often clothed with tine scales; 
most of them are found upon the ground, but some upon herbaceous 
plants. The sub-family contains the following N. A. genera, with the 
number of described species in each : Epicterus 7, Pandeleteius 1, 
Polvdrosus 2, Sitones 8, Tanymecus 5, Thalacites 1, Paclinseus 2, Pary- 
notus 1, Lachuopus 1, Platyomus 1, Strophosomus 1. 
Sab-family OTIORHYNCHIDES. 
This word literally means ear-snouted , and is intended to express the 
most peculiar character of the sub-family, which cousists in an ear like 
expansion on each side of the end of the rostrum, but some species are 
included which have not this character. Another distinctive character 
is the length of the scape, or first joint of the antenna}, which, except in 
the genus Brachystylus, always extends backwards beyond the eyes. 
Many species are found under moss and grass. Such larvae as are known 
feed upon the roots of plants. N. A. genera : Otiorhynchus 3 species, 
Agraphus 1, Tyloderes 1. 
Sub family CYLINDRORHINIDES. 
Rostrum as long, at least, as the head, rather stout, and more or 
less enlarged at the end. Scape reaching the eyes. Eyes oblong and 
transversal. Thorax with ocular lobes, and imperfectly contiguous to 
the elytra. This sub family contains the genus Listroderes , Sell., of 
which seventeen N. A. species have been described. This genus forms 
one of the transitional groups betwien the short-snouted and the long- 
snouted OurculionidaB, the rostrum being usually nearly twice as long- 
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