CQLEOPTERA. »1'.' 



7J/«7(/»tt0!,Dahl. [and tin' three following, having wings in both sexes], has the ant mple, not more than half 



the length of the body, and the laatjoint of the palpi forma a triangular naaaa. The bead is large, nearhj sq 

 with the eyes entire; the sides of the thorax have a triangular tubercle. [II. bi/tixcialmn, and two or three other 

 British species.] 



RAamntuium, Meg., has the antenna; rather shorter than the body, serrated, with tin- third and fourth joints 

 shorter than tlic following; the eyes are evidently emarginate. R. s.iiicix. Fab., [an Buropean spei 



Toxotux (and I'nchiila, Dej.), has the antenna' at least as long as the body, simple, with the basal joint much 

 shorter than the head ; the eyes are entire, or very slightly emarginate. 



Euriptera, Serv. & Lep., has the antenna; 12-jointed. [A Brazilian insect.] 



Dittenia and Cometet, Serv. & Lep., have the thorax apined at the side, palpi short, antenna- villose. Tlie 

 former has the elytra narrowed and terminated by a spine, in the latter they are linear and unarmed. Both are 

 Brazilian. 



Stenodervx, Dej., has the antennae long, the basal joint at least as long as the head, and the body long, narrow, 

 and linear; the eyes are entire. [Exotic insects]. 



In the other species the head is suddenly narrowed immediately behind the eyes ; the antennae, inserted near 

 the anterior extremity of their internal notch, are wide apart at the base ; the two promineno ■ from which tins- 

 spring are nearly on the same plane; the thorax is mostly entireatthe sides. These form the genus— 



Lepturu proper, some of which have the thorax conical, as in Lept. armata, (Jyll. (/,. calcarala, Fab.), [a very 

 common British species, ofa black colour, with yellow marks in the elytra . whilst in others the thorax is nearly 

 globular, as in L. tomentoxa, [another common British species, of smaller size and black colour], 



THE FIFTH FAMILY OF THE COLEOPTERA TETRAMERA,— 

 The Eupoda, — 

 Is composed of insects, the first of which (the Donacice) so closely approach the last of the Longicornes, 

 that Linnscus and Geoffroy united theui together, and the last of which are so close to the Chrysomelae, 

 the type3 of the following family, that the first of these naturalists placed them in this genus. The 

 parts of the mouth exhibit the same relations: thus, in the first, the tonguclct is membranous, bifid, 

 oi bilobed, as in the Longicornes ; the maxillae also greatly resemble theirs; but in the terminal 

 Eupoda: the tonguelet is nearly square or rounded, like that of the Cyclica. The lohes of the maxilla: 

 are however membranous, or hut slightly coriaceous, whitish, or yellowish ; the exterior is dilated at the 

 tip, and has not the appearance ofa palpus, which thus more nearly resembles that of the Longicornes 

 than of the Cyclica. The body is more or less oblong, with the head and thorax narrower than the 

 abdomen; the antenna; are filiform, or thickened at the tips, and are inserted in front of the eyes, 

 which in some are entire, round, and prominent, and in others slightly notched; the hind part of the 

 head enters into the thoracic cavity; the thorax is cylindrical or transversely square; the abdomen is 

 larger compared to the other parts of tin- bodj . ohlong, or in the form of a long triangle ; the joints i f 

 the tarsi, except the last joint, are cushioned beneath, and the penultimate joint is bifid or bilobed ; 

 the hind legs aie thickened in a great number, whence the origin of the family name. All these insects 

 have wings, and fix themselves to the stems or leaves of plants, more especially to the LQiacess in res] 

 to many of our native species; the larva: of some (Donacice), devour the interior of the stems of water 

 plants, upon which the perfect based ia found ; thos,- of others feed externally, hut covered with their 

 own excrements, which forms a kind of mantle, as in the Cassidae. 



We divide this family into two tribes, [Sagrii/tx and Crtocertdet]. 



The first, Saoridcs, is composed of the genus — 



Sagra, — 

 The mandibles of which terminate in an scute point. The tonguelet is deeply bilobed Some have 



the palpi filiform, the exes emarginate, and the hind thighs very thick, with the tibiae curved. 

 Megalopu*,h*a the front of the head produced into a muzsle; the mandibles strong and crossing each other j 



the antenna- arc thickened ut the tips, lland-oim- Brazilian beetles. See the monographs Of Kin.-. M.nnerlieim, 



sndGistrj. 



Sagra, I sbi . rst named I ,h exclusively confined to South Africa, Ceylon, [Java], and China, mid 



bas the palpi terminated by an ovoid |oint, the antennae nearly fiUfbrm, and the four anterioi I fhtj they 



an- splendidl] coloured, being golden, green, or copper-coloured. 



The others have the palpi thickened at the tips, the eyes entire, and the thighs of nearly equal thickm as ; the 

 bod] is narnra and depressed. 



OnodacMna, Latr.,haa the antennae filiform, composed of reversed conical Joints; the last Joint of the palpi alone 



is rather larger than the preceding, and nearly of an OVOid truncate shape. - small British up 



Ptammotau, Boudiei Crypfa, Kirby], haa the antennae composed of abort joints, thickening to the ti[ ■ 



