HEMIPTERA HETEROPTERA. 



55 



i^i «?i 





-t- First and second joints of the rostrum equally 

 long, or the first shorter than the second. 



•*-#• Disk of the hind lobe of the prothorax bituber- 

 culate hindward. 



u» Apical angles of all the abdominal segments, 

 or at least of the first and second, promi- 

 nent. - 

 Apical angles of the abdominal segments not 



prominent. - 



Hind lobe of the prothorax not bituberculate. 



Hind angles of the prothorax extended. Disk 



of the scutellum with a much elevated and 



sometimes dichotomous tubercle. - 



* Scutellum with a slightly elevated tubercle. 



ten^n Hind angles of the prothorax not extended. 



** Scutellum with no tubercle. 



Ante-ocular part of the head shorter than the 

 post-ocular. First joint of the antennae 

 longer than the head, the prothorax, and the 

 scutellum together. Fore lobe of the pro- 

 thorax with two high tubercles hindward ; 

 fore angles with an acute tubercle, which is 

 inclined outward. Side angles of the hind 

 lobe of the prothorax elongated. Legs 

 rather long. - 



0O Ante-ocular part of the head about equal to the 

 post-ocular, the former a little lower than 

 the seat of the ocelli. First joint of the 

 antennae somewhat longer than the head. 

 Prothorax with no discal tubercles ; fore 

 angles obtusely tuberculate; lateral angles 

 of the hind lobe obtusely rounded, not pro- 

 minent. Legs rather short ; thighs towards 

 the tips slightly tapering; fore thighs 

 incrassated ; tibiae and fore thighs equally 

 long; hind thighs extending almost to the 

 third apical part of the abdomen ; tibiae 

 slightly thickened at the tips. 

 The following description of Saxitius, translated 

 author, differs somewhat from the preceding one : — 



Head and prothorax equally long, the former 

 cylindrical ; post-ocular part slightly tapering 

 hindward, a little longer than the ante- 

 ocular part, which is hardly lower than the 

 seat of the ocelli, the latter being very 

 slightly raised. First joint of the rostrum 

 short, just shorter than the ante-ocular part 

 of the head; second about twice as long as 

 the first. Antennae rather short; first joint 

 a little longer than the head. Lobes of the 

 prothorax with small spines or acute 



Aristippus. 

 Helonoxus. 



Pristhesancus. 

 Lanitxcs. 



Archilochus. 



from 



Saxitius. 

 the same 



