158 THE OEDER OP COLEOPTEEA. 



A. Tarsal claws simple ; body usually moderately elongated. 

 B. Pedicel, or first joint of the antennse, cicatrised at the end ; size large, usually an inch or more 



in length MoNOHAMMUS. 



B B. Pedicel -without cicatrix or scar. 

 C. Middle cotyloid cavities open on the outer side ; thorax usually unarmed, or, at most, with an 

 obtuse tubercle at the side ; thighs not at all, or but slightly clavate ; size usually about 

 medium. 

 D. Antennte two or three times as long as the body, at least in the males ; thorax longer than 

 wide. 

 E. Antennas naked ; tiiighs linear, the hinder.oues nearly as long as the abdomen : 



DORCHASCHEMA. 



E E. Anteunie hairy; hind thighs sub-fusiform, not reaching beyond the 2d abdominal seg- 

 ment .*. Hii'POPsis. 



U D. Antenna; never much longer, sometimes shorter, than the body ; thorax not longer than 

 wide, (except Adetus.) 

 V. Body ornamented with tufts of long hairs; thorax with a tubercle at the side ; thighs 



sub-clavate Desmipiioka. 



F F. Body without tufts of hair. 

 G. Head very prominent; upper lobes of the eyes separate or wanting; legs very short : 



Spalacopsis. 

 G G. Head and eyes ordinary. 

 H. Legs rather long, thighs linear, the hind ones reaching the end of the 4th abdominal 



segment. Often rather large species Sapeuda, 1 3. 



H H. Legs short ; thighs sub-clavate or fusiform, not reaching at most beyond the 3d 

 abdominal segment. 



I. Body robust; antennse longer than the body ; lower lobes of the eyes elongated ; 



Oncideres. 



I I. Body more or less elongated ; eyes ordinary. 



K. Head retractile ; thorax longer thau wide ; antennaj much shorter than the 



body ; eyes deeply notched Adetus. 



K K. None of the above characters. 



L. Eyes coarsely gi'anulated ; size medium Ataxia. 



L L. Eyes finely granulated ; size small. 



M. Antenna' hairy ; elytra plane Eupogonius. 



M M. AntenucB not hairy ; elytra with a rounded elevation at the base : 



PSENOCEKUS. 



C C. Middle cotyloid cavities closed ; thorax usually with a small spine or tubercle at the sides ; 

 antennas longer than the body ; hind thighs clavate, and reaching nearly to the end of 

 the abdomen. Size usually below medium. 

 N. Size about medium ; thorax with a spine at the middle of the .sides. 

 O. First joint of antennie rather short, and pear-shaped ; female without ovipositor : 



ACANTHODEUES. 



O O. First joint of antenna; elongate obconic ; female with an exserted ovipositor : 



Graphisurus. 

 N N. Size below medium ; body rather short and thick, thoracic tubercle obsolete: 



Leptostylus, 10. 



U N N. Size much below medium ; thoracic spine behind the middle of thorax Leiopus. 



A A. Tarsal claws bifid at the end, or with a tooth near the base ; body usually elongated and slen- 

 der ; antennse about as long as, or shorter than the body. 



P. Eyes completely divided ; three intermediate segments of the abdomen shorter than 

 the others. 



Q. Claws bifid; body stout ; size medium TETRAOPE.S. 



Q Q. Claws toothed at base ; body slender ; size small Tetkops. 



P P. Eyes not divided ; body elongated, slender, and parallel. 



R. Four first abdominal segments equal, or gradually decreasing. 

 S. Claws bifid. 

 T. Hind legs elongated, thighs reaching the end of the 4th abdominal segment : 



Stknostola 



T T. Legs moderate, hind thighs not reaching the end of the 3d abdominal seg 



ment Phvtcecia 



S S. Claws toothed at base; legs short Obekea, 13. 



R R. Three intermediate segments of abdomen shorter than the others; head retrac 

 tile Amphionycha 



