CLASS V. INSECTA. 
193 
Genus 171. OPATMJM. Fair., Oliv., Lam., Leach. Silpha. 
Linn. Tenebrio. Geoff., Marsh. 
Body oval : maxillary palpi with their last joint obtrigonate: antenna 
gradually thicker towards their extremities : the last joints trans- 
verse, compressed. 
®P- I- Opat. sabidosum. (PI. 2, fig. 8. a. antenna magnified .) 
Gpatrum sabulosum. Fab:-., Lair. Silpha sabulosa. Linn. Tenebrio 
^fibulosus. Marsh. 
Inhabits sandy places. 
Genus 172. TENEBRIO. Linn., Geoff., Dc Geer, Fall-., Lair., 
Leach. 
■Thorax behind as broad as the elytra : body elongate : antennae scarcely 
gradually thicker towards their extremities ; the eighth, ninth, and 
tenth joints transverse ; the last subglobose : mentum somewhat qua- 
drate; the upper margin rounded: maxillary palpi with their last 
joint thick. 
Sp. 1. Ten. Molitor. ( PL 4 . jig. 1.) 
Inhabits houses; the larvae in meal and Hour; and is well known un- 
der the name of meal-worm. 
Earn. XXIX. Diaperidje. Leach. 
1 Landibles bifid at their extremities : head more or less triangular, with- 
out a contraction behind, at its juncture with the thorax : tarsi with 
entire joints : antenna not moniliform, their extremities perfoliated 
or serrated. 
Stxrps 1. — Body linear, or nearly so. Thorax almost quadrate. Antenna 
terminated by a club. Maxilla: unguiculated. 
Genus 173. SARROTRIUM. lllig., Fair., Leach. Hispa. Linn., 
Marsh. Tenebrio. Dc Geer. Ortuocerus. Lair. 
Antenna with the last six joints forming a thick, fusiform, downy 
mass. 
®P' 1. Sarr. muiicum. (PI. 2. Jig. 16. a. antenna magnified .) 
mrotrium muticuin. Payk., Fabr., Leach. Ilispa mutica. Linn., Marsh. 
Orthocerus hirtieomis. Lutr. 
hhabits sandy places. In Britain it is rare, or at least very local. It 
has been found in gravel-pits near Norwich by Mr. Joseph Hooker, 
an d near Hampstead by Mr. Stephens, in the months of June and 
July. 
\ Sti »ps. 2. — Antenna not moniliform. Body oval, or nearly orbicular : 
a little longer than broad. 
a. Antenna not serrated at their extremities. 
Genus 174. PHALERIA. Latr., Leach . Tenebrio. Fabr. 
J nterior tibia elongate-trigonate : tarsi short : antenna gradually thick- 
ening towards their extremities, where they are perfoliated : body oval. 
N 
