334- MODERN CLASSIFICATION OF INSECTS. 



The first subfamily Brenthides*, is composed entirely of exotic 

 species of singular form, forming the genus Brentus Fahr., having 

 the body very long and narrow {fig. 40. 19. Arrhenodes septentrionis 

 $ from North America); the head elongated and produced in front; 

 with the rostrum varying in size and form according to the sex 

 {fig. 40. 21. head of ,y ) ; the antennae are straight and filiform, with 

 the last joint alone elongated {fig. 40. 20.). f 



The subfamily is of small extent, there being scarcely a hundred 

 species described by Schonherr. The species are of a moderate size, 

 and generally of a black colour, varied with red or yellow spots and 

 lines. The genus Arrhenodes of Steven offers a curious geographical 

 peculiarity, as all the North American species of the family belong 

 to it, as well as the only Europaean Brenthus, namely, Arr. coronatus 

 Germ. (Brentus Italicus Dej.), which is found in Italy, where it has 

 been taken by R. Spence, Esq., who informs me that he always met 

 with it under the bark of trees. In like manner, Mr. R. H. Lewis 

 informs me, that he found the Arrhenodes septentrionis, figured 

 above, under the bark of felled trees, forming the cross layers of the 



* BiBLioGR. Refer, to the Brenthides. 



Lund. Monograph, in Act. Hafn. vol. ii. 



IlUger. Mag. der Entomol. iv. 



Germar. Ins. Sp. Nov. and Iter in Dalmatia. 



Wesmael, in Journ. Acad. Brux. ( Antliarhinus, or Metorhyncbus). 



I]ohemann, in Act. Mosq. vi. 



Griffith. An. K. 



Latreille, in Diet. Class. d'Hist. No. xiv 



Dahnan. Anal. Ent. 



Perty. Del. An. art. Bras. 



Gu6rin, Icon. R. An. 



Schonherr, Herbst, Drjiry, Voet, §-c. 



f The structure of the mouth is very curious, and has not yet been properly ex- 

 amined. The upper lip is obsolete, and the mandibles large and robust. In Eutra- 

 chelus Temminckii,the maxillaj are terminated by a long setose lobe, and the maxillary 

 palpi are rather longer than the lobe, the second joint being considerably elongated ; 

 but I have not been able to trace the true structure of the instrumenta labialia, 

 which are covered by a large horny lunate plate, as in Anthribus; but the labium 

 and palpi are not exposed as in that group, and there is a horny organ of curious 

 structure within the mouth. 



