INSECTS. 
521 
in the males ; with a distinct scutellum ; posterior extremity of 
the abdomen visible ; antennae ten jointed, the last three lamel¬ 
lar- claviform; the mandibles corneous, projecting on the ex¬ 
terior side, sinuous or crenulated; jaws squamose, dentated or 
spinous; chin oval or ovoid, truncated or obtuse before ; labium 
membranous, concealed under the head. 
Scarabceus Hercules. — The Hercules Beetle. 
Plate XCVIII. fig. 1. 
Head of a deep shining black ; the male provided with a long 
incurvated horn ; thorax black, with a projecting retrousse horn, 
somewhat notched above; elytra brown, with black spots. 
Inhabits the Antilles. 
Genus MELOLONTHA.— Latreille. 
Generic Character. —Antennae ten jointed, the club in the 
males formed of from five to seven oval compressed leafy joints ; 
body oblong, gibbous, an d frequently hairy ; head rounded or 
notched, and somewhat marginated ; eyes rounded, projecting; 
thorax slightly convex ; scutellum usually heart-shaped ; elytra 
somewhat shorter than the abdomen, slightly margined on each 
side ; anterior legs having two or three lateral teeth; tarsi con¬ 
sisting of five joints. 
Melolontha vulgaris. — The Cock-Chaffer. 
Plate XCVIII. fig. 2 . 
Body black; the members reddish-bay; lateral borders of 
the thorax somewhat dilated, and rounded in the middle, with 
a black or red cicatrix near the margins of each; each elytra 
with four longitudinal ribs ; breast gray and downy, the mar¬ 
gins of the abdomen with a series of white triangular spots. 
Inhabits Europe. 
Section II— Heteromera —With the first four tarsi com¬ 
posed of five joints and the last two of four. 
TRIBE I.-MELASOMA. 
Joints of the tarsi for the most part entire ; antennas moriili- 
lorm, always inserted under the lateral and projecting borders 
2 u 3 
