162 LIST OF HOMOPTEROUS INSECTS. 



Centrotus asperulus. 



Niger, validus, obscurus, subpubescens, subpunctatus, inermis ; 

 comu poslicum attenuatum, acutum ; abdomen cornu posti- 

 cum superans ; pedes picei ; alee anticce nigricantes, fascia 

 subapicali vitrea. 



Black, stout. Prothorax dull, slightly pubescent, very minutely 

 punctured, not dilated ou each side, attenuated hindward to 

 the acute tip, which does not extend to the tip of the abdomen. 

 Legs piceous. Fore wings blackish, with a vitreous transverse line 

 by the tip of each. Length of the body If line; of the wings 

 2 lines. 



a. Sierra Leone. Presented by the Rev. D. F. Morgan. 



Centrotus varius. X> 



Niger, subpunctatus ; caput inter oculos excavatum ; prothorax 

 carina tus, antice inermis, humeris sat acutis ; cornu posticum 

 gracile, acutum, undulatum, apud medium testaceum, abdomen 

 non superans ; pedes picei, genubus tibiis apice tarsisque ful- 

 vis ; alee anticce bast punctatce, lituris variis posticis plagaque 

 costali subapicali vitreis. 



This species differs much from the typical form of Centrotus, 

 and may form a new genus. Black, minutely punctured. Head 

 somewhat excavated between the eyes. Prothorax keeled, unarmed 

 on each side, with a' smooth shining spot on each side in front; 

 shoulders somewhat acute ; hind horn slender, acute, undulating, 

 testaceous in the middle, not extending beyond the tip of the abdo- 

 men. Legs piceous; knees, tarsi and tips of the tibiae tawny. 

 Fore wings punctured towards the base, with various vitreous marks 

 hindward and with a large vitreous patch near the tip of the costa. 

 Length of the body 2 lines; of the wings 4 lines. 



a. Birmah. From Mr. Waring's collection. 



Centrotus obstans. 



Niger, validus ; prothorax rude punctatus, antice vix carinatus, 

 cornubus lateralibus abbreviatis, conicis acutis planis, guttis 

 duabus pectorisque lateribus testaceo tomentosis ; cornu posticum 

 attenuatum, carinatum, subarcuatum, apice acutum, abdomen 

 vix superans ; tibia: tarsique ferruginea ; alee cinereo-vitrea?, 

 venis ferrugineis ; anticce basi picea? et punctata. 



