CtASS V. INSECTA. 



191 



Sinodcndron cylindricum. Fubr., Latr., Don., I^ach. Scarabaeus cy- 

 lindricus. Linn., Dt deer, Oliv. Lucanus cylindricus. JMarsh. 



Inhabits old trees, especially tlie ash. Is very abundant near Chelten- 

 ham and near Plymouth. 



** Bodt/ ovoid-oblong. 



Genus 163. MELOLONTHA. Fabr., Oliv., Lam., Latr., Leach. 



Eljjtra with their external edge not sinuated, very slightly narrower at 

 their base than at their points : tifii<e armed with very distinct heels. 

 Sp. 1. Mel. vulgaris. (Common Cockchafter.) 



Melolontha x-ulgaris. Lntr., Fabr. Scarabaus melolontha. Linn., Marsh. 

 Inhabits various trees in May and June. 



Genus 164. ANOMALA. Kiippe, Leach's MSS. 



Elytra with the external edge not sinuated, very slightly narrower at 

 their base than at their points: libia t«rminated by very distinct 

 heels: antenna: of both sexes nearly equal in size, with a lumcllateJ 

 club: baJj/ ovate or short ovate convex. 



A. Frischii. Mel. Frischii. Fabr. 



Inhabits the sandy coasts of the sea. 



The following may be consiilercd as the type of the 

 Genus Amaloplia, Sp. 1. Melolon. ruricola. 



Genus 105. IIOPLIA. Illig., Lair., Jjcach. Scaradcus. Linn., 

 Oeoff'., De Gcer. Melolontha. Fabr., Oliv. 

 Elytra with their external edge sinuated : tibia with very obscure spurs 



or heels. 

 Sp. 1. Hopl. pvlvcruknla. 

 Inhabits heaths. 



Division II. — Thora.x as long as broad, nearly orbicular, or almost orooid 

 and truncate at their extremities. Mandibles partly membranaceous, 

 sometimes aitirely corneous. Maxilla terminated by a membranaceous 

 or coriaceous lobe. Labrum not prominent. 



Genus 166. TRICIIIUS. Fabr., Latr., Leach. 

 Antenna with the first joint very large : clypeus quadrate : palpi short, 



with their first joint very large: clypeus quadrate : torsi willi equal nails. 

 Sp. 1. Tr. fasciatus. 

 Trichius fasciatus. Latr., Fabr., Leach. Cetonia fasciata. Olit. Sca- 



raJxfrus fasciatus. Linn. 

 Inhabits Europe on umbelliferous plants, but is rare in Britain. 

 Sp. 2. Tr. nobilis. [PI. l.Jjg.^1. a. antenna magnified.) 



Stirps 2. — A triangular scale interposed between the posterior angles 

 oi the thorax, and the exterior of the base of the elytra. 



