

ILLUSTRATIONS 



OF 



BRITISH ENTOMOLOGY. 



SECTION IV. 



Tarsi tetramerous, rarely heteromerous ; the penultimate joint generally bilobed : 

 head produced anteriorly into a rostrum, with the mouth at its apex, and the 

 antennw (varying in the number of articulations from nine to twelve) more or 

 less clavate; or the head not rostrated, the antennw 11- or 12-jointedj filiform 

 or setaceous, occasionally serrated ; labium more or less cordiform. 



The larvse usually reside in the interior of vegetable produc- 

 tions, and are generally without legs, or have those organs ex- 

 tremely small ; they are oblong and vermiform ; some attack the 

 outer bark of trees, others the solid wood, or the parenchyma of 

 leaves, the interior of seeds, &c. In the imago there is considerable 

 diversity of appearance ; it is therefore necessary to subdivide the 

 group, and the portion in immediate affinity to the insects last 

 treated of is 



Subsection 1. — Rhinchophora, Latrellle. 



Head rostrated anteriorly, with the mouth at the apex : antennce inserted on the 

 rostrum, generally clavate; the basal joint frequently elongated: mandibles 

 generally small, stout: palpi generally minute: body firm, hard: abdomen 

 mostly robust; tarsi VBxiows. 



This extensive and singular division of insects, equalled only in 

 numbers by the Brahcelytra, is composed of strictly phytophagous 

 species, all of them, both in their larvse and final stages, subsisting 

 upon plants in their various states ; the larvse are soft, whitish, and 

 without feet, with the body composed of twelve distinct segments, 



Mandibulata. Vol. IV. 31st Jan. 1831. b 



