160 LIST OF HOMOPTEROUS INSECTS. 
of the abdomen. Legs testaceous. Wings grayish vitreous. Fore 
wings slightly marked with pale brown, tawny and punctured at the 
base. Length of the body 2% lines; of the wings 5} lines. 
a, Mexico. From M. Sallé's collection. 
CENTROTUS OPPUGNANS. 
Niger ; prothorax obscurus, subcarinatus, rude punctatus, cornubus 
lateralibus crassis longi-conicis, oblique ascendentibus ; spina 
postica subrecta, attenuata, apice acuta ; abdomen prothoracem 
vie superans ; pedes toti nigri; ale antice nigra, opace ; 
postice nigricantes. 
Black. Prothorax dull, roughly punctured, slightly keeled ; 
horns very stout, elongate-conical, directly diverging, obliquely 
ascending; hind part attenuated, almost straight, acute at the tip, 
extending nearly to the tip of the abdomen. Legs wholly black, 
Fore wings opaque black. Hind wings blackish. Length of the 
body 3 lines; of the wings 6 lines. 
a. Mexico, From M. Salle’s collection. 
CENTROTUS NIVEIPLAGA. 
Niger ; prothorax rude punctatus, subcarinatus, sat allus, cornu. 
bus lateralibus validis lanceolatis acutis oblique ascendentibus 
postice arcuatis ; spina postica gracilis, acuta, undulata, 
maculis duabus basalibus niveis; abdomen prothoracem vie 
superans ; tavsi ferruginet aut testacei; ale luride; antica 
apud costam nigra, macula basali sublutea. 
Black. Prothorax roughly punctured, slightly keeled, as- 
cending rather high above the head; horns lanceolate, stout, acute, 
diverging, curved backward, obliquely ascending, with a ridge 
on the inner side; hind part slender, acute, extending nearly as far 
as the tip of the abdomen, undulating beneath, so as to leave two 
spaces between it and the fore wings; a snow-white spot on each 
side of it at the base. Tarsi ferruginous or testaceous, Wings 
lurid. Fore wings black along the costa, with a dull luteous spot 
oF each near the base. Length of the body 34 lines; of the wings 
7 lines, 
a. Mexico. From M. Sallé’s collection. 
6, Guatimala, From M. Scherzer’s collection. 
