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THE ORDER OF OOLEOPTERA. 
E. Mcntum large, concealing the maxill®; sternum not hollowed in front. 
F. Scrobes linear directed beneath the rostrum; scape rarely extending 
beyond the posterior border of the eyes, often not reaching it: 
BRACH YDERIDES . 
F F. Scrobes often dilated, forming winglets (pterygia) on the sides of 
the end of the rostrum, never linear and directed beneath ; scape 
extending beyond the eyes (except in Brachystylus,) : 
• OTIORHYNCHIDES. 
E E. Mentum small, not concealing the maxillae ; sternum more or less hol- 
lowed out in front to receive the rostrum. 
G. Scrobes deep, linear, reaching the mouth. 
H. Scrobes reaching the eyes. Rather large insects, either glabrous 
or pubescent MOLYTIDES. 
H H. Scrobes various in length ; small insects clothed with hairs or 
fine scales IIYPERIDES. 
G G. Scrobes short, curved, sub-basal ATERPIDES. 
D D. Prothorax with ocular lobes ; eyes generally large, oval and transversal. 
I. Tarsi hispid, not spongy beneath; third joint not dilated nor 
bilobed BYRSOPSIDES. 
I I. Tarsi spongy; third joint bilobed. 
K. Rostrum widened and hollowed triangularly at the end ; 
scrobes confluent on the under side of rostrum : 
PROMFCOPIDES. 
K K. Rostrum more or less enlarged, but not notched at the end; 
scrobes shallow and incomplete posteriorly : 
CYLINDRORHINIDES . 
Section 2. Longirostres. 
First Sub-section — Synmerides. Anterior coxa; nearly or quite contiguous; never 
with a groove between them for the reception of the rostrum. 
A. Antennae elbowed, first joint much longer than the others. 
B. Body oblong, cylindrical, covered with a fine powder; tarsal claws soldered to- 
gether at base Lixides. 
B B. Body not cylindrical and pulverulent; ungues free. 
C. All the tibiae terminated with a claw. 
D. Thorax longer than wide, swollen anteriorly; narrowed behind ; eyes 
round Otidocephaudes . 
D 1). Thorax narrowest in front; eyes oval or oblong. 
E. Body rough; eyes almost or quite contiguous above; abdominal sutures 
very deep Piuonombiudes. 
E E. Body smooth, glabrous or pubescent. 
F. Body elongate, sides parallel, glabrous, punctured; usually black or 
blueish Magdalinides. 
F F. Body oval ; usually brownish and pubescent, aud often variegated. 
G. Tibiae slightly compressed and hollowed on the inner side; rather 
large insects ; inhabit pine trees IIylouiides. 
G G. Tibi® round ; small insects ; usually found on low plants : 
Ehikhinides 
C C. Tibi® unarmed or simply mucronate at the end. 
