52G INSECTA. 



radipjnis:, Prj. (l-lie males of -\vliicli have only 8 joints in tbe aiitcnnn-;, the club liein;? 5-joIritecI, P. excavahia) 

 [Soutii nf Knru|.cl. and 



A!Ji/iij/f.-r/i:,\ Mac Leay (haviiit^-the antenna 10-jointed, tlie club Iiein;^' S-jointed), have the men turn neajdy ovoid 

 and very hairy;, and the inaxilkt ternihiated by a trian;:;ular hairy lolje, without teetb, or with very stnfill ones. 



Anoploguiitli^s, Mac Leay, [and Repsimus, Leach), have a sternal point, tlie claws of the tarsi entire and unequal 

 in size, the antennae lO-jointed. [These are splendid Australian insects, with bi'onzed bodies, ajiparently of very 

 common occurrence, from the numbers broup;ht to En^^land.] 



Leucofhi/reiis, Mac Leay, has the antenna? lO-jointed, one of the tarsal claws entire and the other bifid ; the 

 anterior t.'irsi are dilated, and sponfi;y beneath intlie males. [^^'"^^''-''^'^ insects.] 



Apoijoiilii, Kirliy, differs in having all the tarsal claws bifid. [Exotic species of small size.] 



Cei/'a/,';-, K'rli\ , has tin; antennEE 9-jointed, and the extremity of the nmxillte with three teeth, the mentnni of 

 the nialrs witli a in.'ai d, Mir claws as in Leucothyreus. G. barbatns, Kirby, (Urazi!). Melolonlha obscura, and others, 

 appear to iVn-m a ditfcieiil." sni)[:;enus, tlie tarsi not beini^ dilated. 



Asecond rlivision of the riiylloiiliagi [called by mistake Xylophiles in the text], and wliich comprises 

 the Melolonthidce of Mac Leay, has tlie labrum transverse, with a notch in the middle ; the nientum is 

 as long as, or longer than broad, cither nearly square or heart-shaped. The maxillae are scaly, and 

 mostly armed with five or six teeth. Tliis division comprises two subdivisions, Melohnthides and Hoplides. 

 The Melo Ion f hides have more than three plates in the club of the antennee : the body is generally 

 thick, mandibles robust, entirely, or for the greatest part, horny, the upper extremity strongly truncate, 

 with two or three teeth, the labrum generally visibU', the maxillary teeth robust, and all the tarsi ha-e 

 tv,-o claws. 



Mi:hilo)ilJia proper, has lOdointed antcnnx, the last five or seven in the males, and four or six in the females, 

 form the club ; the labi-am is thick and deeply notched in the middle ; the tarsal claws are diual ; the abdomen 

 is i^enerally pointed at the end, at least in the males. 



Mcloloiifha vulgaris {Scarabteus vielolontha, Linn.), [the common Cockchafl^er,] is too well known to require 

 description, and has formed the subject of elaborate anatomical works by Strauss Durckheim, Leon Dufour, and 

 Cliabrier, This insect (as well as another closely-allied species, M, Mppocastnni) [which last, however, is of very 

 rare occurrence iu this country] appear in certain seasons in so great abundance that they defohate in a very 

 short time lar{2;e spaces of our forests and woods, devouring' the leaves. The larva is also equally destructive to 

 the roots of grass, &c., in our pastures and gardens, being a wdiite grub [with a scaly head, sLx legs, and the body 

 thick, fleshy, wdiite, and cijr\'cd, so that the creature ordinarily lies upon its side]. 



R/nsotrogus, Latr., dilTers only from Blelolontha in havmg the antennae 9 or 10-jointed, with the club 3-jointed. 

 As it is not always possible to distinguish the number of joints immediately preceding the club of the antennae, 

 1 reiniitc the genus Amphimallon, wdiich I had first formed, and in \\bich there are only nine joints in those 

 organs. M. solitifiaUs, [the July Chafier, a very common British species,] and others. 



Ccra^pis, Lep., Serv., lias the hind margin of the thorax with two notches, the intermediate space forming a 

 point ; antenna 10-joiuted ; tarsal claws, except the anterior, uneqiial ; body clothed with small scales ; consisting 

 ofafew Brazilian species, C. pruino-sa, &c. 



Arcoda, Leach, has 10-jotnttd antennee ; the sternum pointed ; all the tarsal claws equal in the supposed females, 

 aiut unequal in the males. These are of brilliant colours. [A. lanigcra, a handsome but common North Ameri- 

 can insect.] In all the following iNIelolonthides the antenna; have only nme joints. The four following have all the 

 tarsal claws equal. 



Dasyus, Lepel. and Serv., has the ungues of the tuo fore-feet, at least ui the males, bifid, tlie others entire. 



Serica, Mael. i{jiiiitlnj,!i,i, Dej.), has all the ungues bifid ; the body ovoid, swollen, silky, with the thorax much 

 broader than Inng, ,S', hnmnea [a common British species of small size, mostly found in Spiders' webs]. 



Diphu.cephalay\}(;].,h^s all the tarsal claws bifid ; fore-tarsi more or less dilated in the males ; body narrow, 

 and the front of the head deeply notched. [Small species of a shining green colour, proper to Australia ; umno- 

 graphed by Waterhouse in Trans. Eiit. ^uc. vol. i.] 



Macrodactyhts, Latr., resembles tlie last in the length of the body, but the thorax is nearly hexagonal, and the 

 tarsi alike in both sexes. Small insects, peculiar to the New "World. 



The remainder have the ungues of the middle tarsi alone unequal. 



Plectris, Lep., Serv-, has the largest of the middle ungues, and both in the other tarsi bifid. 



Popiiia, Leach, has the sternum advanced. [See Ne^iTnan's Monograph of this genus, an abstract of which has 

 appeared in the Mag. of Nat. Hivl.] 



EucJdora, Mac Leay {Anomala, Meg.), has no sternal point; one of the ungues of the four ajiterior tarsi is bifid 

 in the males ; body convex ; clypeus short and transverse. [Latreille cites a species, M. v/rld/s (which is the true 

 type of Euch/ora, of which group, confined to the Asiatic species, Mr. Hope has given a monograph in the Pro- 

 ceedings of the Zoological Society,) and also J/. Tili.^, Jidii, Frischii, &c., which are retained as species of ^^jom/v/a 

 by English writers. The allied genus, Mimela, K.) hns tdso Ijeen nn.inographed by Mr. Hope in Trans. Eid. Soc.yq\. i.] 



Aiirsfijilin, Meg., has also no sternal point, but the clyiteus is narrow in front, \Mth the extremity elevated, 

 /!/. Jior/'cid", agricola, [British species]. 



Lcj^lsia, Lepel. and Serv., have no sternal point, but the four anterior tarsi ha\'e both ungues bifid. 



