SNOUT-BEETLES OR 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 BRACHTDEKIDES. 



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, Cyelopthalmes, meaning round eyes, and which are distir- 

 guished by the union of the three characters of short snouts, round eyes aiu 

 the maxiilcie covered by the mentum. The Brachyderides are for tii 

 most part comparatively large species, often clothed with fine scales ; 

 most of them are found upon the ground, but some upon herbaceous 

 plants. The subfamily contains the following K A. genera, with the 

 number ef described species in each : Epicserus 7, Pandeleteius 1, 

 Polydrosus 2, Sitones 8, Tanymecus 5, Thalacites 1, PachnaBus 2, Pary- 

 notus 1, Lachnopus 1, Platyomus 1, Strophosomus 1. 



Sub-family OTIORHYNCHIDES. 



This word literally means ear-snouted, and is intended to express the 

 most peculiar character of the sub-family, which consists 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 antennae, 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. 



Eostrum 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, Sch., of 

 which seventeen N. A. species have been described. This genus forms 

 one of the transitional groups betwi en the short-snouted and the long- 

 snouted Curculionidse, the rostrum being usually nearly twice as long 

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