LIST OF HOMOPTEROUS INSECTS. 161 
CENrROTUS HUMILIS. 
Niger ; prothorax subnitens, sat humilis, dense punctatus, vic 
carinatus, cornubus lateralibus validis lanceolatis acutis sub- 
ascendentibus postice subarcuatis ; spina postica gracilis, 
acuta, maculis duabus basalibus, una flava, altera alba ; abdo- 
men prothoracem superans; tibia ferruginee ; tarsi fulvi ; 
ale cinerea, apice subluride. 
Black. Prothorax rather 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. ‘Tibia 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, Esq. 
CENTROTUS FASCIATUS. 
Fulvus ; prothorax punctatus, nigro notatus, linea antica trans- 
versa pallida, cornubus lateralibus longiusculis sat acutis 
subareuatis subascendentibus supra nigris ; cornu posticum 
nigrum, gracile, attenuatum, rectum, basi testaceum ; abdomen 
nigrum, prothoracem superans ; pedes nigro substrigati ; ale 
vitrea, sublurida, venis fulvis; antice basi fulve et pune- 
tale. 
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. Leys slightly streaked with black. Wings vitreous, 
Somewhat lurid; veins tawny. Fore wings tawny and punctured at 
ie base of the costa. Length of the body 3 lines; of the wings 6 
ines, 
4, Brazil. From Mr, Stevens’ collection. 
P38 
