KEMIPTEKA I1ETEU0PTERA. 



83 



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X 



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Centrocnemis. 

 Platymeris. 



Tetroxia. 

 Spinigeb. 



XX 



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Head before tlie eyes with a broad process, which 



is emarginate in front. Scutellum with an 



obtuse tooth on each side at the base. - Cethera. 



Scutellum unarmed at the base, with an erect 



spine on the disk. - Macrops. 



Head longer than its breadth with the eyes. 

 Head with a rather long cylindrical neck. First 



joint of the rostrum as long as the third 



and fourth together. Fore tibiae with hardly 



any spongy furrow, that of the middle tibia; 



small. - 



First joint of the rostrum shorter than the third 



and fourth together. 

 Scutellum spiny on each side at the base. 

 Scutellum unarmed at the base. 

 Fore lobe of the prothorax with two spines or 



tubercles on the disk. 

 Fore lobe of the prothorax unarmed on each side 



at the base. - 

 Fore lobe of the prothorax with a spine or tubercle 



on each side at the base. 

 Ocelli far from the eyes. - 

 Ocelli near the eyes. Second joint of the rostrnm 



hardly longer than the first. First joint of the 



antenna hardly exteuding beyond the head. 



Fore angles and hind angles of the prothorax 



with a spine. Scutellum with an oblique 



apical spine. Legs long, slender; fore femora 



unarmed, not incrassated. Spongy furrow of 



the fore tibia; elongated. - Vellejub. 



Fore lobe of the prothorax unarmed on the disk. 

 Ocelli large, very near the eyes. 

 Second joint of the rostrum much longer than the 



first. ------ Opsicoetds. 



Second joint of the rostrum hardly or a little 



longer than the first. - Varus. 



Ocelli remote from the eyes. 

 Fore coxae distinctly prominent near the hind 



border of the prostethium. 

 Femora unarmed on each side beneath at the 



extreme iip. 

 Ante-ocular and post-ocular parts of the head 



equally long, or the post-ocular shorter than 



the ante-ocular. - Acanthaspis. 



Ante-ocular part of the head a little longer than 



the post-ocular, which is slightly swelling. 



First joint of the antenna; short, hardly reaching 



the tip of the head. First joint of the rostrum 



and ante-ocular part of the head equally long; 



second joint somewhat longer than the first. - Pasira. 



Femora on each side beneath at the extreme 



tip with a little spine or small acute tooth. - Leogorrus. 



