COLEOPTEUA. 477 



somewhat narrower than the abdomen. The antennse are 

 longer than the two latter, serrated in some Calopus fili- 

 form or setaceous, and composed of long and almost cylindrical 

 joints in the others ; the anterior extremity of the head is more 

 or less prolonged into a little snout, and somewhat narrowed 

 behind ; the eyes are proportionally more elevated than in the 

 preceding Heteromera. The thorax is at least as long as it is 

 broad, almost square, or nearly cylindrical, and slightly nar- 

 rowed behind ; the elytra are linear or subulate posteriorly, 

 and frequently flexible. These Insects are allied to Telepho- 

 ne and Zonitis. 



M. Leon Dufour has discovered in the CEdemerites two 

 very simple, flexuous, and floating salivary vessels(l), as well 

 as a paunch formed by a lateral crop, furnished with a neck 

 or pedicle. They are the only Coleoptera in which he has 

 observed it. These Insects are found on flowers or trees. 

 Their metamorphoses are unknown. 



These Heteromera will be comprised in a single genus, the 



OEdemera, Oliv. 



Here, where the antennae are always short, inserted into an emar- 

 gination of the eyes, and simple, the posterior thighs are inflated, at 

 least in one of the sexes, the thorax is as wide as the base of the 

 abdomen, and wider than the head; the hooks of the tarsi are bifid. 



Nothus, Ziegl. Oliv. Osphya, Illig. Dryops, Schoenh. 



Where the maxillary palpi are terminated by a large, securiform 

 and elongated joint. The posterior legs are very stout in one of the 

 sexes, with one stout tooth and two small spurs beneath, near the 



( 1 ) The Mordellones present the same character. In a more natural series it 

 would perhaps be necessary to place the Horix, which also have the posterior 

 thighs inflated, immediately after Zonitis and Sitaris, then pass to the CEdemerites 

 and Mordellones, and terminate the Heteromera with the Notoxi or Jlnthicus of 

 Fabricius, Insects evidently connected with the Mordellones by the Scraptiae. In 

 my Gener. Crust, et Insect., I have placed the CEdemerites at the end of the same 

 section. The Rhxbi of M. Fischer, although tetramerous, are allied in many res- 

 pects to the Nothi and CEdemera:. The Xylophili, also tetramerous, are however 

 closely related to the Notoxi. 



