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Show 426 INSECTA. But few species at·e known, and all of them are from Bra. zil(l). The AREODES, Leach. Mac L. Have ten joints in the anteunre, a corneous sternum, and all the hooks of the tarsi equal in the individuals presumed to be femalesLepel. and Serv.-and unequal in the males; the thickest of the two anterior ones of the lattet· is bifid, and all the others at·e entit·e. The colours of these Insects are very brilliant(2). In all the preceding Phyllophagi, with some few exceptions, we have found the antennre to consist of ten joints. In all the following ones of the same division, or that of the Melolonthidre, we shall find but nine. Here all the hooks of the tarsi are equal; one of the two anterior ones, at most, is sometimes larger. DAsYus, Lepel. and Serv. Hooks of the anterior tarsi, at least in the males, bifid; and the others entire(3). SERioA, Mac L.-Omalopia, Dej. All the hooks of the tarsi bifid; body ovoid, arched, silky, and fre· quently with changeable reflections; thorax much wider than long(4). DxPHUCEPHALA, Dej. Here also all the hooks of the tarsi are bifid; but the body is nar· row and elongated, and the thorax almost square. The first joints of the four (male) or two (female) anterior tarsi are short, and provided with brushes underneath; the same joints are dilated, or wider in the four first tarsi of the males. The epistoma is strongly and angularly emarginated. These Insects are peculiar to New Holland( 5). (1) The Oeraspis pruinosa, Lepel. and Serv., Encyc. Method., is theM. biw~ nerata of Germar. The M. variegata of the latter also appears to me to be & true Oeraspis. (2). Hor. Entom., I, p. 158. (3) 1 Encyc. Method., article Scarabei'des. (4) Mac Leay, Hor. Entom., I, 146. TheM. brunnea, variabilis, ruricola, &c., of Fabricius. M. Mac Leay says that the antenna= are composed of ten joints, but I can find but nine. The length and form of the tarsial segments vary. (5) Melolontlw. colaspidoides, Schamh., Synon. Insect., I, 3, App., p. 101. See the Catalogue, &.c., of Dej., p. 58. COLEOPTERA. 427 MAoRODAOTYLus, Lat. Similar to Diphucephala in the hooks of the tarsi and the elonga. of the body; but here the thorax is longer, almost hexagonal, and aulol nt he joints of the tarsi• are a II' k e m. b oth sexes, e I ongate d an d s.i m-ply pilose. They are peculiar to the western con tin en t( 1 ). There, the hooks of th.e intermediate tarsi are alone unequal. PLEOTRrs, Lepel. and Serv. The largest of these hooks and the two of the other tarsi bifid; first joint of the posterior tarsi very long(2). Iu the others, all the hooks of the tarsi are unequal; those of the two posterior ones, at least, are always entit·e; one .at least of the two or four anterior tarsi of the males, and sometimes of the females, is bifid. PoPILIA, Leach. The sternum advancing between the legs in a compressed and truncated, or very obtuse lamina( 3). EuoHLoRA, Mac L.-JJnomala, Meg. Dej. No sternal projection; one of the hooks of the four anterior tarsi bifid in the males; body arched; epistoma short and transversal( 4). ANISOPLIA, Meg. Dej. No sternal elongation; but one o£ the hooks of the four ant~rior tarsi is bifid in the two sexes; the back is depressed, and the epistoma usually narrowed anteriorly, and raised at its extremity( 5). LEPISIA, Lepel. and Set·v. No sternal spine, but distinguished from the preceding by the four anterior tarsi the hooks of which are bifid(6). The Hoplid'r e or the Phyllophag1· , o f our tl:u ' rd and last division, (1) M. rubspinosa, Fab., and several undescribed species. (2) Encyc. Method., article Scarabeides. (3) 'I'richius 2-punctatus, Fab. .. F: . !. .. (4) TheM viridis, bicolor, errans, marginata, cyanocephala, vitis, Juln, rlBC tn, Mlomcea, aurata, &.c., of Fabricius. See Hor. Entom., I, P· 147. The gc~us Mime/a, Kirby, appears to me to approximate closely to Euchlora; not havmg seen a specimen of the former, J can say no more. . . ab (5) The M. horticola, .ftoricola, auricola, fruticola, ugncula, lmeata, &.c.' F · (6) Encyc. Method., at·ticle Scarabli'des. |