COLEOPTERA. 



541 



Our second general division of the genus Curculio of Fabriciae ditters in the narrowness of the mentum, whicli, 

 from not occupying the whole breadth of the oral cavity, leaves the sides of the maxiilai and mandibles (which 

 are toothed) exposed ; the club of the autenuffi is formed of tivc or six joints. 



Those with only two teeth in the mandibles, and the labial palpi distinct, and which are destitute of win;?s, ooni- 

 puse the sLib-gencra Mj/niops, Rhylirrhinus (which have simple tarsi), and Liparus (which has pulviJIose tarsi). 

 Those whicb have wings form the sub-genera Hijpera and Uylob'ms. Those with three or four teeth in the mandi- 

 bles, and the labial palpi nearly obsolete, form the subgenus Cleoniis, including various other genera of Schonherr. 



The Lomjirostres, or those with the antennae inserted at a distance from the insertion of the man- 

 dibles, often near the middle of the rostrum, which is generally long, nearly correspond to tlie genera 

 Li.vus, Rhi/nchdnus, and Calmtdra^ Fabr. In the first two the antennae are at least 10-jointed, but ofteujr 

 ll-or 12-jointcd ; tlie club being at least composed of the last tliree joints. 



Lixus, Fabr.— 

 Nearly resembles Cleonus in the trophi, the long fusiform club of the antennae, the narrow elongated form of thf 

 body, and the armature of the feet. It is nearly linear in L. pavaplccticus [a common British species], the larvse of 

 ■\vliich live in the stems of Phcltandriiini, and produce in liorses which mayiiappen to eat them [with the plant], 

 the disease called " paraplegic. " 



Rhinoci/llus, is composed of a species with the antenncc scarcely elbowed, and which, from its supposed efficacy 

 in the tootliache, [has been specifically named R. anti-odonial ;iiciis\. 



Rhvnch.entjs, Fabr. — 

 Has not such general characters. In some tlie stenium bas not a cavity for the reception of the rostrum ; and of 

 tliese some have the antennae U- or 12-jointed, and the legs not fitted for leaping. 



Thamnophtlas, is winged, tlie antennas short and scarcely elbowed, and the tibiae armed with a strong hook at the 

 tip. 



Bagoiis, has the tibiae curved, with a strong hook at the tip ; the tarsi long and filiform. These are small insects, 

 found in marshy places. 



BracJn/puSy differs from the last in having the penulti- 

 mate joint of the tarsi very much dilated; the last joint 

 sometimes without claws. 



Balaiuniis, has the rostrum very long, sometimes longer 

 than the whole body. B. nncuni [the common Nut Weevil], 

 the larva of which feeds 0[) the kernel of the not. 



RhlinchfDiiis^ ditTcrs from the preceding by negative cha- 

 racters ; and from the following by having 12-jointcd an- 

 tenna;. 



Sibi/nia, having only 11-jointeil antenn;c ; tJie club com- 

 posed of seven. 



Myorhivus, differs in having no wings. ]\Iany of Schon- 

 herr's genera are here united tog-ether. 



We now pass to those which have only nine or ten joints 

 in the antennte, and are able to leap. 



Cionus, Clairv., has the body nearly globular, but they do 

 not leap. The following are able to leap, having thick hind 

 thighs. 

 [Many minute British species.] 



..?^ 



u 



4- 



Itf. 70.— A, !L brancli of Uj 

 Gy the iiitrotin 



e pupa of the s 



.f tht' ecu' of t'le 1 

 ■f tljc i;rul>: B. t 

 ' i D,the perfect '. 



, [Bub.n 



■.). 



Orchestes, has the antenn£e fixed upon the rostrum. 

 Bamphus, has the antenna; fixed between the eyes. 



In tlie remaining Rhynchini the legs are apart at the base, and the sternum has a cavity for the reception of the 

 rostrum. 



In Amerlrinus and Bnridixs, the latter is however wanting. 



Those which possess this cavity have been distributed into a very great number of genera by Schonherr. 



Camplor/it/tic/iiis {Eiirliinus, Sch.), differs in having the terminal part of the antennm forming a thick perfoliated 



mass. 



Cenlriniis; has the scutellum distinct, the chib of the antenna: elongated, and the prosternum with two spines. 



Zygops, has the eyes united above, and the legs very long. 



Cadorhijnchus, has the scutellum scarcely visible, the antenna; 12-jointed. 



HydaticHs, has 11-jointed antenna;. 



Oiobiies, has the body very short and sub-globose, the antenna; 12-iointed. 



Cnipiorlnincliiis, has the body oblong-convex ; the fore-legs longest, especially in the males ; antenna; 12-jointed. 



Ti/lodes, is apterous or sub-apterous, with the scutellum wanting. 



Calandra, Fab. — 

 Comprises the tenninal Longirostres which li.ave only nine joints to the antennfe, the last, or the two last, forming 

 the club, with the tip spongy. They feed in the larva st.ate on seeds or woody substances. 



Anchoiius, Sch. (with 10-jointed antenna"), and 



Orlhocluctcs, Germ, (with 9-jointed antenn.T), are both apterous. 



