520 INSECTA. 



slender towards the extremity. The mandibles are always 

 salient, the ligula is bifid or emarginated; the y^alpi are short, 

 the body is depressed and elongated, and the thorax almost 

 square. These Insects are found under the bark of trees, and 

 may be reduced to a single genus, the 



Cucujus, Fab. 

 We distinguish 



Cucujus, properly so called, 



Where ihe antennae, much shorter than the body in several, are 

 composed of dbconical or turbiniform and almost granose joints, the 

 first of which is shorter than the head(l). 



Dendrophagus, Gyll. — Cucvjus, Fab. Payk. 



Where those, organs are generally formed of elongated and cylin- 

 drical joints, the first of which is longer than the head, and the se- 

 cond and third are shorter than the following ones. The labial palpi 

 terminate in a club(2). 



• Uleoiota, Lat. — Brontes, Fab. 



Where the antennae are analogous, but where the third joint is as 

 long as the following one, and all the palpi are smaller at the extre- 

 mity. The mandibles of the species most common in France, the 

 flavipes, and on which M. Dufour has made some anatomical ob- 

 servations, are furnished, in the males, with a long and acute pro- 

 longation refiembling a horn(3). 



FAMILY IV. 

 LONGICORNES. 



Here the under part of the three first joints of the tarsi is 

 furnished with a brush ; the second and third are cordiform ; 

 the fourth is deeply bilobate, and ther? is a little nodule re- 



(1) The Cucuji clavipes, depressus, rufus, himaculatus, piceus, testaceus, ater, 

 Oliv., Col., IV, No. 74, bis. See also Gyllenh., Insect. Suec. 



(2) Gyllenh , Ibid. . ' 



(3) Lat., Gener. Crust, et Insect., Ill, p. 25. See also Fabricius and Gyllen- 

 hall. Ibid. 



