HEMIPTERA HETEROPTERA. 



29 



too 



+ 

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 ++ 



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V 



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Rostrum extending lo the tip of the abdomen. - 

 Rostrum not extending beyond tbe metapectus. 

 Eyes semicircular. - 



Eyes elongated. - 



Sides of the pro thorax with distinct keels. 

 Prothorax excavated in front. 

 Head triangular. - 



Head pentagonal. - 



Prothorax straight in front. 

 Prothorax elongated or almost rectangular. 

 Rottrum extending to the middle of the meta- 

 pectus. ..... 



Roitrum extending to the hind border of the 



mesopeclus. 

 Fore femora uuarmed, rarely with some bristles 



on the under edge. 

 Second joint of the rostrum longer than the first. 

 Second joint of the rostrum shorter than the first. 

 Fore femora with one or more spines beneath. 

 Fore femora with a stout spine near the tip. 

 Fore femora with two minute spines in the 



middle. - - - 



Prothorax trapeziform, varying in length. 

 Head longer than the breadth of the neck. 

 Body and limbs roughly hairy. - 

 Body and limbs bare, or at most finely hairy. 

 Fore femora not very thick. . . - 



Fore femora very thick. ... 



Head shorter than the breadth of the neck. 

 Sides of the prothorax straight. 

 Body bare, smooth, shining. - - - 



Body wholly pubescent. ... 



Sides of the prothorax excavated. 

 Prothorax with a conspicuous rim on the fore 



border. - 



Prothorax with no rim on the fore border. 

 Fore femora unarmed. - 



Fore femora with bristles on both edges beneath. 

 Sides of the prothorax foliaceous. 

 Sides of the prothorax foliaceous only on the 



hinder half. - 

 Sides of the prothorax foliaceous along the whole 



length. 

 Fore border of the prothorax with a rim. 

 Jtosirum slender, extending to the hind border 



of the metapectus. - 

 Rostrum stout, extending to the hind border of 



the mesopeclus. - 



Fore border of the prothorax with no rim. 

 First joint of the hind tarsi only a little longer 



than the second and third joints together. 



Mecorhamphus. 



Henestaris. 

 ophthalmicus. 



Plinthisus. 

 Dkymus. 



IsCHNOCORIS. 



Macrodema. 

 a0pl0sceli3. 



Meoalonotus. 



PxEROTMETUS. 



Lasiocoris. 



Peritrechus. 

 Tropistf.thus. 



Lamproogma. 



PlONOSOMUS. 



Lasiosoma. 



Acohpus. 

 Stygnus. 



Homalodema. 

 Erkmocoris. 



ScOLOPOSTIiTUUB. 



