ATTELABUS. INSECTS. 299 



two teeth in the internal side in many ; palpi filiform, short ; 

 chin notched, lunate ; elytra not covering the anus. 



A. latirostris, Lat. Body black ; rostrum with two wrinkles, cine- 

 reous ; elytra waved with gray spots and the extremity whitish. 

 Northern Europe, in woods Lat. Hist. xi. pi. 91, fig. 3. 



IT. Labrum not apparent; antennae in the greater number 

 geniculate ; palpi almost imperceptible , simple, and conical ; 

 rostrum generally much longer and narrower than the pre- 

 ceding division, and supporting the antennae. 



TRIBE III. ATTELABIDES. 



Penult joint of the tarsi always bilobed ; antennae straight, ter- 

 minated in a club, formed sometimes by the last three joints, 

 sometimes by the last, and inserted on the rostrum ; body 

 oval or ovoid, narrowed before. 



The insects of this tribe gnaw the leaves or tender parts of vegetables. The fe 

 males generally roll up the leaves in the form of a tube or horn, in which they deposit 

 their ova, and thus prepare for their young a retreat which furnishes them at the 

 same time with food. 



I. Antennas of eleven joints, the last three forming the club ; jaws not covered by the 

 chin. 



Gen. RHINARIA, EURHINUS, APODERUS, ATTELABUS, RHYNCHITES, 

 APION. 



II. Antennas of ten joints, of which the last alone forms the club. 



Gen. CYLAS. 



Gen. ATTELABUS, Lin. Lat. 



No apparent labrum ; palpi minute, conical ; antennae straight, 

 of eleven joints, the last three forming a perfoliated club ; ros- 

 trum broad, dilated at the end ; no apparent neck ; mandibles 

 cleft at the extremity ; legs terminated by two strong hooks. 



The larvae are soft, whitish, and without feet, with the body composed of twelve 

 indistinct segments ; head hard, scaly, and armed with two strong jaws. They all 

 live on vegetable substances, change their skin many times, and when arrived at 

 their proper growth spin a cocoon, or construct one of a resinous matter. 



A.femoralis, Oliv. Shining black ; thorax rounded ; elytra pubes- 

 cent, with dotted striae ; posterior thighs tumid in both sexes. 

 Inhabits Europe Oliv. Col. No. 81, pi. 1, fig. 12. 



TRIBE IV. BRENTIDES. 



Tenult joint of the tarsi bilobed ; antennae straight, and insert- 

 ed on the rostrum, filiform, or thickening gradually towards 

 the end, of eleven joints ; rostrum projecting, often very long ; 

 body linear, and much elongated. 



I. Proboscis of the males terminated either by projecting hooked mandibles, or a di- 

 latation giving this extremity an acuminated or subulate form ; thorax longer than 

 broad, ovoid, or cylindrical ; chin covering the jaws. 



1. Rostrum terminated by two strong, projecting, arched, and pointed mandibles. 



A. Rostrum short ; head terminated immediately behind the eyes ; antenna monili- 

 form. 

 Gen. ARRENODUS, (Schcen.) 



