508 
THE STUDY OF INSECTS. 
JJ. Tarsal claws of usual size; ventral abdominal 
segments usually free ; sometimes (Buprestidse) 
the first two are grown together. 
K. Abdomen with only five ventral segments. 
L. Femur joined to the apex or very near the 
apex of the trochanter, p. 553. ..Ptinid^e. 
LL. Femur joined to the side of the tro¬ 
chanter. 
M. Anterior coxae globular or transverse, 
usually projecting but little from the 
coxal cavity. 
N. Anterior coxae transverse, more or 
less cylindrical. 
O. Posterior coxae grooved for the re¬ 
ception of the femora. 
P. Legs stout, retractile; tibiae di¬ 
lated, usually with a furrow near the 
outer end for the reception of the 
tarsi; tibial spurs distinct, p. 542. 
Byrrhidje. 
PP. Tibiae slender, with small and 
sometimes obsolete terminal spurs, 
or without spurs. 
Q. Head constricted behind; eyes 
smooth, p. 553..... CupesiDjE. 
QQ. Head not constricted behind ; 
eyes granulated, p. 544. 
DASCYLLID®. 
OO. Posterior coxae flat; not grooved 
for the reception of the femora. 
P. Tarsi more or less dilated, first 
segment not short, p. 541. 
NlTIDULID®. 
PP. Tarsi slender, first segment 
short, p. 542. Trogositid®. 
NN. Anterior coxae globular. 
O. Prosternum with a process which 
extends backward into a groove in 
the mesosternum. 
P. The first two abdominal segments 
grown together on the ventral side, 
p. 548.BUPRESTID®. 
