196 MODERN CLASSIFICATION OF INSECTS. 



been very minutely examineoi by Swammerdam, both internally and ex- 

 ternally {Book of Nature, pi. 27-), by whom the remarkable difference 

 existing in the structure of the nervous system in the larva and imago 

 states was discovered. Frisch, also {Besclir., S)C., vol. v. pi. 1. f. 1.), 

 and Rosel {Ins. Belust. vol.ii. pi. 6. f. 3,4.), have represented the larva 

 and pupa of Oryctes nasicornis. The two last-named authors have 

 also represented the transformations of Cetonia senea ; and M. Bouche 

 has described and figured the larva of Cet. marmorata {Naturg. de Ins. 

 t.9. f.l — 6.); but the meso- and metathoracic segments are represented 

 as furnished with spiracles, and the two terminal segments (thirteenth 

 and fourteenth) are confounded together into a mass nearly half the 

 size of the rest of the body. The larva of Cet. aurata {Jig. 19. ii.) 

 figured by De Haan, Ratzeburg {Forst. Ins. t. 3. f. 18.), and De 

 Geer (vol. iv. pi. 11.) resides, as I am informed by Mr. Kirby, in ants' 

 nests. That of INIelolontha vulgaris {Jig. 1 9. 5.) has also been figured by 

 Goedart (No. 111.), Rosel (vol. ii. pi. 1.), Kirby and Spence {Introd. 

 vol. iii. pi. 17^ Jig. 12.), Suckow {Nattirg. des Maikafers), Albin 

 (pi. 60.), Ratzeburg {Forst. Ins. vi. t. iii. f. 1. B — E.), and in many 

 other works. The larva of Trichius nobilis is figured by Rosel 

 (vol. ii. pi. 3.): it was found in a rotten plum tree; but, according to 

 Froriep {Notiz. vol. xiii. p. 321.) it feeds upon snails. The larva of 

 Trich. eremita is given by Drumpalmann {Naturh. heschr. Tlmrr. nord. 

 Prov. RussL, Riga, 1811, pi. 11. ^.6.^. Bouche has described the 

 larva of Aphodius lividus {Naturg. p. 100.). The larva represented 

 by Frisch (vol.i. p. 3. pi. 19.) as that of Aphodius is a Staphylinideous 

 larva. The last-named author has also figured the transformations of 

 Geotrupes stercorarius (vol. i. pi. 4-. t. vi.), Anomola Frischii (ditto, 

 t. xiv.) and Melolontha solstitialis (vol. ii. pt. 1. t. 15.) Germar has 

 illustrated the transformations of Melolontha ruficornis in his Mag. der 

 Ent. vol. i. p. 8. Bouche has also described the last-named insect and 

 Anisoplia horticola and fruticola [Naturg. Garten Ins. p. 19 — 21.). Mr. 

 G. R. Waterhouse has also described and figured the larva {fig. 19. 3.) 

 and pupa of Trox arenarius, the former of which differs from the other 

 Petalocerous larvte (except Aphodius, _^^. 19. 2.) in having the max- 

 illae bilobed ; but the antenuEe are described as only 3-jointed, whereas 

 in Aphodius they are stated by De Haan to be 5-jointed. 



The origin of the name Scarabaeus appears doubtful ; the word, 

 indeed, never occurs but in the writings of Latin authors; yet 

 Fabricius and Olivier give its derivation from the Greek o-KOTrrw ; which 



