CLASS V. INSECTA. 



191 



SInodendron cylindricum. Fab?-., Latr., Don., Leach. Scarabaeiis cy- 

 lindricus. Linn., De Geer, Oiiv. Lucanus cylindricus. Marsh. 



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

 ham and near Plymouth. 



** JBof/j/ ovoid-oblong. 



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



E/j/tra with their external edge not sinuated, very slightly narrower at 

 their base than at their points : tibi(e armed with very distinct heels. 

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



Mclolontha vulgaris. Latr., Fabr. Scarabseus melolontha. Linn., Marsh. 

 Inhabits various trees in May and June. 



Genus 161. ANOMALA. Kiippe, Leach's MSS. 



Eh/lra with the external edge not sinuated, very slightly narrower at 

 their base than at their points : tibiee terminated by very distinct 

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

 club : boc/^ ovate or short ovate convex. 



A. Frischii. Mel. Frischii. Fabr. 



Inliabits the sandy coasts of the sea. 



Tlie following may be considered as the type of the 

 Genus Amaloplia, Sp. 1. Melolon. ruricola. 



Genus 165. IIOPLTA. lUig-, Latr., Leach. Scarab^us. Linn., 

 Geoff'., De Geer. Melolontha. Fabr., Oliv. 

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



or heels. 

 Sp. 1. liopl. pulverulenta. 

 Inhabits heaths. 



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

 and truncate cd their extremities. Mandibles partly memh-anaceous, 

 sometimes entirely corneous. Maxilla terminated by a membranaceous 

 or coriaceous lobe. Labrum not prominent. 



Genus 166. TRICHIUS. Fabr., Latr., Leach. 

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



with their first joint very large: clypeus quadrate : ^wrsj with equal nails. 

 Sp. 1. Tr. fasciutus. 

 Trichius fasciatus. Xoir., Fabr., Leach. Cetonia fasciata. Oliv. Sca- 



rabaeus fasciatus. Linn. 

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

 Sp. 2. Tr. nobilis. {PI. i.Jig. 2. a. antennts magnified.) 



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

 ol the Ihorax, and the extci-ior of the base of the elytra. 



