24 INSECTA. 



of ten joints. All the hooks of the tarsi, Avith the exception of the 

 anterior, are unequal; the strongest of the intermediaries is entire in 

 the male ; the others, and the six in the females, are bifid. The body- 

 is covered with little scales. 



But few species are known, and all of them are from Bra- 

 zil *. The 



Areodes, Leach, Mac L., 



Have ten joints in the antennse, a corneous sternum, and all the 

 hooks of the tarsi equal in the individuals presumed to be females — 

 Lepel. and Serv.' — and unequal in the males; the thickest of the two 

 anterior ones of the latter is bifid, and all the others are entire. 



The colours of these Insects are very brilliant f . 



In all the preceding Phyllophagi, with some few exceptions, Ave 

 have found the antennae to consist of ten joints. In all the following 

 ones of the same division, or that of the Melolonthidae, 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 J. 



Serica, Mac. L. — Omalopia, Dej. 



All the hooks of the tarsi bifid ; body ovoid, arched, silky, and 

 frequently with changeable reflections ; thorax much wider than 

 long ||. 



DiPHUCEPHALA, 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 pro- 

 vided with brushes imderneath ; the same joints are dilated, or wider 

 in the four first tarsi of the males. The epistoma is strongly and an- 

 gularly emarginated. 



These Insects are peculiar to New Holland §. 



Macrodactylus, Lat. 



Similar to Diphucephala in the hooks of the tarsi and the elonga- 

 tion of the body ; but here the thorax is longer, almost hexagonal, 



* The Ceraspis pruinosa, Lepel. and Serv., Encj'C. Method., is the M. hivulne- 

 rata of Germar. The M. variegata of the latter also appears to me to be a true 

 Ceraspis. 



t Hor. Entom., I, p. 15S. 



X Encyc. Method., article Scarahiules. 



II Mac Leay, Hor. Entom., I, 146. The M. hrunnea, variabilis, ruricola, Sec, of 

 Fabricius. M. Mac Leay says that the antennse are composed of ten joints, but I 

 can find but nine. The length and form of the tarsial segments vary. 



§ Melolonfha colaspidoides, Schoenh,, Synon. Insect., I, 3, App., p. 101. See the 

 Catalogue, &c., of Dej., p. 58. 



