LIST OF HOMOPTEROUS INSECTS. 161 



Centrotus HUMILIS. 



Niger ; prothorax subnitens, sat humilis, dense punctatus, vix 

 carinatvs, cornubus lateralibus validis lanceolatis acutis siib- 

 ascendeuiibus postice subarcuatis ; spina postica gracilis, 

 acuta, maculis duabus basalibus, unajiava, altera alba ; abdo- 

 men prothoracem superans ; tibia ferruginece ; tarsi fulvi ; 

 alee cinerece, apice sublurida. 



Black. Prothorax ratlier low, thickly punctured, hardly 

 keeled, slightly shining ; horns stout, lanceolate, acute, diverging, 

 very slightly curved backward, slightly ascending ; a yellow spot 

 and behind it a white spot at the base of the hind part, which 

 is slender and acute, and does not extend to the tip of the abdo- 

 men. Tibias ferruginous. Tarsi tawny. Wings gray, with a 

 lurid tinge towards the tips. Length of the body 3 lines ; of the 

 wings 6 lines. 



a. Petropolis, Province of Rio. Presented by J. Gray, Esc^. 



Centrotus fasciatus. 



Fulvus ; prothorax punctatus, nigra notatus, linea antica trans- 

 versa pallida, ■ cornubus lateralibus longiusculis sat acutis 

 subarcuatis subascendentibus supra nigris ; cornu posticum 

 nigrum, gracile, attetiuatum, rectum, basi testaceum ; abdomen 

 nigrum, prothoracem superans ; pedes nigra substrigati ; alee 

 vitrecE, sublurida, veuis fulvis ; anticcB basi fulvce et punc- 

 taice. 



Tawny. Head and fore part of the prothorax punctured, with 

 several small black marks; a transverse paler line in front of 

 the horns, which are rather long and acute, mostly black above, 

 directly diverging, slightly curved and ascending ; hind horn black, 

 slender, attenuated, straight and applied to the abdomen, testaceous 

 at the base, not extending so far as the tip of the abdomen. Abdo- 

 men black. Legs slightly streaked with black. Wings vitreous, 

 somewhat lurid ; veins lawny. Fore wings lawny and punctured at 

 the base of the cosia. Length of the body 3 lines ; of the wings 6 

 lines. 



a. Brazil. From Mr. Stevens' collection. 



p3 



