SNOUT-BEETLES OE WEEVILS. 137 



ter of au iuch in leugtli, with a rough surface aud clothed with short 

 stiff hairs. We have taken tlieni abundantly in Michigan, under the 

 chips placed as traps for the riuni-curculio. Thirteen species of Ophry- 

 astes have been described, none of which have been found east of the 

 jMississippi river. They are large species covered with (;inereous 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. 



Subfamily BRACHTDERIDES. 



This subfamily comprises an extensive and considerably heterogene- 

 ous assemblage of insects, which, taken in connection with the Otiorhyn- 

 chides which follow, constitute the greater i>art of the division called, 

 by Lacordaire, Cyclopthahnes, meaning round eyes, and which are distin- 

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

 the maxilhe covered by the mentum. The Brachyderides are for the 

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

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

 plants. The sub fanuly contains the following N. A. genera, with the 

 numl)er of described species in each : Epicierus 7, Paudeleteius 1, 

 Polydrosus 2, Sitoues 8, Tanymecus 5, Thalacites 1, Pachuaeus 2, Pary- 

 uotus 1, Lachuopus 1, Platyomus 1, Strophosomus 1. 



Subfamily 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 larv;e as are known 

 feed upon the roots of plants. N. A. genera : Otiorhynchus 3 species, 

 Agraphus 1, Tyloderes 1. 



Subfamily CYLINDRORirEiflDES. 



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 X. A. species have been described. This genus forms 

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

 snouted Curculionida?, the rostrum being usually nearly twice as long 

 —18 



