54S INSECTA. 



tlie former, from Soiitb America, liavln^,^ tlio Ijody shorter, hrorider, and depresseil, witli tlie tViorax transverse, tlie 

 abdomen nearly square, scarcely li)ni;^er than broad, the feet robust, and the tarsi much dilated, form theg;enus — 



AranthochiHS, Me^erle, of \Yhich we possess only three European species. 

 One (L, cedi/is, Fabr.) is remarkable for the male antenna beintr nuire tlmii 

 four times the leii}:,rth of the body. 



Others of a simihir form, with the antenna; bearded or fasciculated, form 

 the subgenus Porjonocherus, of which there are several British species, 

 nearly all of which ai'e remarkable for having tlie elytra obliciuely truncate 

 at tlie tips. 



Tc/raope.K, is but slightly elongate, and has eacli eye entirely divided into 

 two parts liy tlie tubercle, from whence arises the antenna;. 



J/y//';(-7/f';»»A', Dej.,. lias tlie Ijody narrow and long, the antenna; exceed- 

 ingly long, a strong s])iiie on each side of the thorax, middle tibiffi slightly 

 bent. 



In Uejeau's catalogue, if we except the apterous species, the other Lnmiie of Fabricius are retained under the 

 generic name Lam'ta, but Dahi has separated C. ciirciilionoi<U:-i and ncbulosa, (French species), under the name of 

 Mcso.sa, which is nearer to Sajierda, in having the thorax notspinedat the sides. 

 Lamia iexior, [a very rare British species], an inch long, and of a dull black colour, conducts to — 

 Dorcadion, Dalm., composed of the species which have no ^vings, a group peculiar to Europe and the adjacent 

 parts of Asia, and of which the larva probably feeds upon the roots of vegetables. 

 Parmena, Megerle, has been separated from the last from having the antennfc longer than the liody. 

 The other Lamiaria; have the thorax not armed at the sides witii tubercles or spines, but c\ limbical, the body 

 always elongated, and nearly linear in many species. These compose the genus — 



Saperda, Fabricius. 

 Gnomn, Fabr., res trie ted to some species from Java, New Holland, Sumatra, &c., resemlde Lamia in tlie position 

 of the head and tlie i arts of the mouth, but thethorax is as long as the abdonn.-n, cylindrical, and more slender in 

 the mnklle ; tlie fore-legs are very long. C. longicollis, GirajJ'a, &c. 



A(h-f<ini(s, I'ej., has tlietirstand third joints of the antenme greatly elongated, exceeding more than onethird of 

 the whole antenna?. 



Ajiomecj/na, Dej., has the body cylindric, anteunn? filiform, short, terminated in an acute point ; the third and 

 fourth joints very long, and the following very short. [Species proper to the East Indies and Isle of France.] 



L'olobothea, Dej., has the antennas close together at the base, the body compressed, the elytra notched or trun- 

 cate at the tips, with the outer angle produced into a spine. This group is peculiar to South America, and to the 

 most eastern of the Islands of the Asiatic Archipelago. 



Other Saperd;e, from Brazil, with the thorax as broad as or scarcely narrower than the elytra, have the 

 third and fourth joints of the antenna; very elongated and dilated, and the elytra dilated behind. (Sapcida amicfa^ 

 fot/ii/a, &^c.) Many other Saperda; with the body very long and narrow have the antenna; 12-jointed, thus forming a 

 disfinct group, {Saperda Card/ii, ;Vc.) 



Amongst the species consideri^d by alt Ihitomologists as true Saperda-, may be mentioned Saperda carcharias-^ 

 Linn, [a British species lately discovered in the fens of Huntingdonshire and Cambridgeshire, in great quantities, 

 and which is figured in the EntomologisVs Text Booh], the larva of which lives in the trunks of poplars, and some- 

 times destroys young plantations. 



Some species have the body still more narrow, and the antenna? excessively long. 



The fourth and last tribe, that of tlic Lfpfm-rdp, is (llstinguished by having the eyes rouncied, entire, 

 or scarcely eniarginate ; the aiitennx insciied more in front, or at the anterior extremity of the slight 

 emarginatiun of the eyes; the head is ]»osteriorly prohinged behind the eyes in many, or suddenly nar- 

 rowed into a neck at its junrtinn with the thorax, the latter heing conical and narrowed in front. The 

 elytra gradually diininisli in width to tlic tip. 



This tribe eompo^e:^ tlie genus 



Leptura, Linn.Tus, — 

 Except such species as belong to the preceding tribes and to the Donacia;. Thus modified, the genus corresponds 

 to Slenocorus, Geoflr., and to those of RJiapinm and Leptnrn of Fabricius. In some species the head is elongated 

 immediately behind the eyes ; the antenna: often shorter than the body, and close together at the base, inserted at 

 a distance from the eyes upon two small eminences like tubercles, and separated by an impressed line ; the 

 thorax is ordinarily tubercular, and spined at the sides. 



Desmocerus, Dej., has the palpi filiform, with the last joint of the maxillary nearly cylindi-ical ; the third and two 

 following joints of the antenna: are dilated at the external angle, especially in the males. D. cpaneus. Fab. ; North 

 America. 



Tlie following difler in having the p.alpi dilated at the extremity, and terminatetlby a conical joint ; the antenna; 

 regular. 



Vespcrus, Dej [consisting of a few spvcirs from fln> sontb of Europr]. dilTers in the males alone being ^ving.Kl ; 

 the thorax is conical, .■niiiv, and witboiit spines or tubercles ; the elytra of the females [which sex is very broad 

 and convex], are short, and gn|iiiig at the tip. 



