5H 
THE STUDY OF INSECTS . 
I. Metasternum long; epimera of metathorax visi¬ 
ble. p. 585. MELANDRYIDjE. 
II. Metasternum quadrate; epimera of metathorax 
covered, p. 537. CucujlDiE. 
GG. Prothorax not margined at the sides, p. 585. 
PYTHID.L. 
EE. Middle coxae very prominent, p. 585. . .CEdemerid.<e. 
DD. Head strongly constricted at base. 
E. Head prolonged behind and gradually narrowed, p. 583 
CEPHALOIDAi. 
EE. Head suddenly narrowed behind. 
F. Prothorax with the side pieces not separated from the 
pronotum by a suture. 
G. Tarsi perfect, with distinct claws t eyes normal. 
H. Prothorax at base narrower than the elytra. 
I. Hind coxae not prominent, or but slightly so. 
J. Anterior coxae globular, not prominent, p. 537. 
CUCUJIDiE. 
JJ. Anterior coxae conical, prominent, p. 586. 
ANTHICIDjE. 
II. Hind coxae large, prominent. 
J. Tarsal claws simple ; head horizontal, p. 586. 
Pyrochroid^e. 
JJ. Claws cleft or toothed ; front vertical, p. 586. 
MELOIDiE. 
HH. Prothorax, at base, as wide as the elytra, p. 589. 
RHIPIPHORID/E. 
GG. Tarsi without claws ; eyes pedunculated, p. 589. 
STYLOPIDiE. 
FF. Lateral suture of prothorax distinct; base of pro¬ 
thorax as wide as the elytra. 
G. Antennae filiform. 
H. Hind coxae plate-like. p. 586. Mordellid^e. 
HH. Hind coxae, not plate-like. p. 585. 
Melandryid^e. 
GG. Antennae flabellate in the male, subserrate in the 
female, p. 589. Rhipiphorid,e. 
AA. Head more or less prolonged into a beak ; palpi short and 
rigid; gular sutures confluent on the median line (Fig. 602, gs); 
prosternal sutures wanting; the epimera of the prothorax meeting 
on the middle line behind the prosternum. (Fig. 602, em.) 
Rhynchophora. 
