CLASS V. INSECTA. 
191 
Sinodendron cylindricum. Fair., Lutr., Don., Leach. Scarabasus cy- 
lindricus Linn., De Geer, (Hit. Lucanus cylindricus. Marsh. 
Inhabits old trees, especially the ash. Is very abundant near Chelten- 
ham and near Plymouth. 
** Body ovoid-oblong. 
Genus 163. MELOLONTHA. Fair., Oliv., Lam., Lair., Leach. 
Elytra with their external edge not sinuated, very slightly narrower at 
their base than at their points : tibia armed with very distinct heels. 
S p. 1. Mel. vulgaris, (Common Cockchaft'er.) 
Melolontha vulgaris. Latr.,Fahr. Scarabaeus melolontha. Linn,, Marsh. 
Inhabits various trees in May and June. 
Genus 164. ANOMALA. Iibppe, Leach's MSS. 
Elytra with the external edge not sinuated, very slightly narrower at 
their base than at their points: tibia terminated by very distinct 
heels: antenna of both sexes nearly equal in size, with a lamellated 
club : body ovate or short ovate convex. 
A. Frischii. Mel. Frischii. Fair. 
Inhabits the sandy coasts of the sea. 
The following may be considered as the type of the 
Genus Amaloplia, Sp. 1. Melolon. ruricola. 
Genus 165. HOPLfA. Illig., Lutr., Leach. Scakab.etjs. Linn., 
Geoff., De Geer. Melolontha. Fabr., Olw. 
Elytra with their external edge sinuated: tibia 1 with very obscure spurs 
or heels. 
Sp. l. Hopl. pulverulenta. 
Inhabits heaths. 
Division II. — Thorax as long as broad, nearly orbicular, or almost ovoid 
and truncate at their extremities. Mandibles partly membranaceous, 
sometimes entirely corneous. Maxilla terminated by a membranaceous 
or coriaceous lobe. Labrum not prominent. 
Genus 166. TRJCHIUS. Fabr., Lutr., Leach. 
■Antenna with the first joint very large: dypeus quadrate: palpi short, 
with their first joint very large: clypcus quadrate : tarsi with equal nails. 
Sp. 1. TV. fasciatus. . . c 
Trichius fasciatus. Lutr., Fabr., Leach. Cetoma fasciata. O.u. ~ca- 
rabaeus fasciatus. Linn. ... 
Inhabits Europe on umbelliferous plants, but is rare in Britain, 
S P- 2. TV. nobilis. ( PI. 1 .Jig. 2. a. antemla magnified .) 
Stirp S 2 ._ a triangular scale interposed between the posterior angles 
ni the thorax, and the exterior ot the base ot the elytra. 
