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 1\ lines ; of the wings 5^ lines. 



a. Mexico. From M. Salle's collection. 



Centbotus oppugnans. V 



Niger; prothorax obscurus, subcarinatus, rude punctatus, cornubus 

 lateralibus crassis longi-conicis, oblique ascendentibus ; spina, 

 postica subrecla, attenuata, apice acuta ; abdomen prothoracem 

 vix superans ; pedes toti nigri ; alee anticce nigrce, opacce ; 

 postica 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, 

 exteuding 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. 



o. Mexico. From M. Salle's collection. 



Centrotus niveiplaga. (} 



Niger ; prothorax rude punctatus, subcarinatus, sat altus, cornu- 

 bus lateralibus validis lanceolatis acutis oblique ascendentibus 

 postice arcuatis ; spina postica gracilis, acuta, undulata, 

 maculis duabus basalibus niveis ; abdomen prothoracem vix 

 superans; tavsi ferruginei aut testacei ; alceluridoe; antica 

 apud costam nigrce, 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 

 on each near the base. Length of the body 3£ lines ; of the wings 

 7 lines. 



a. Mexico. From M. Salle's collection. 



6. Guatimala. From M. Scherzer's collection. 



