158 THE OEDEH OF COLEOPTERA. 



A. Tarsal claws simple ; body usaaUy moderately elongated. 

 B. Pedicel, or first joint pf the antenna', cicatrised at the end ; size large, usually an inch or more 



in length Mosohammus. 



B B. Pedicel without cicatrix or scar. 

 C. Middle cotyloid cavities ojaen 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. Antenna two or three times as long as the body, at least in the males ; thorax longer than 

 wide. 

 E. Antennae nalied ; tliighs linear, the hinder ones nearly as long as the abdomen : 



DORCHASCHEMA. 



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



' ment Hippopsis. 



1) D. Antennas never much longer, sometimes shorter, than the body ; thorax not longer tlian 

 wide, (except Adetus.) 

 F. Body ornamented with tufts of long hairs ; thorax with a tubercle at tlie side ; thighs 



sub-clavate DESMlPiioiiA. 



F F. Body without tufts of hair. 

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



Spalacopsis. 

 Ct 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 reacliiug at most beyond the 3d 

 abdominal segment. 



I. Body robust; antennae longer than the body ; lower lobes uf the eyes elongated ; 



OXCIDERES. 



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



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



body ; eyes deeply notched Auetus. 



K K. None of the above characters. 



L. Eyes coarsely granulated ; size medium Ataxia. 



L L. Ejes tiuely granulated ; size small. 



M. Anteunie hairy ; elytra plane Eupogonius. 



M M. Antennas not hairy ; elytra with a rounded elevation at tlie base : 



PSEXOCERUS. 



C C. Mi<Ulle cotyloid cavities closed ; thorax usually witli 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 antennas rather short, and pear-shaped ; female without ovipositor : 



ACASTHODERES. 

 O O.- First joint of antenn;c elongate obconic ; female with an exserted ovipositor : 



Graphisurus. 

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



Leptostylus, 10. 



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



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

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

 P. Ej'es completely divided ; three intermediate segments of the abdomen shorter than 

 the others. 



Q. Claws bifid; body stout; size medium Tetraopes. 



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



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



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

 S. Claws bifid. 

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



Stenostola, 



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



ment Piiytcecia 



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



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

 tile Amphionycha, 



