LIST OF HOMOPTEROUS INSECTS. 163 



Black, stout. Prothorax roughly punctured, hardly keeled 

 in front ; lateral horns short, conical, acute, horizontal, directly 

 diverging ; hind part attenuated, keeled, very slightly curved, acute 

 at the tip, hardly extending beyond the tip of the abdomen ; a tes- 

 taceous tomentose dot on each side at the base ; pectus with 

 testaceous tomentum on each side. Tibice and tarsi ferruginous. 

 Wings cinereous-vitreous ; veins ferruginous. Fore wings piceous 

 and punctured at the base. Length of the body 3 lines ; of the 

 wings 6 Hues. 



a. Tasmania. 



Centrotus trifoliaceus. 



Niger, validus ; prothorax subpuncfatus, carinatus, lineis elevatis 

 fulvis, cornubus laleralibus lalissimis irigonis subascendenti- 

 bus, apice acutis postico vix arcuatis ; cornu posticum altis- 

 simum, valde convexum, apice acutum ; abdomen cornu 

 posticum superans; alee anlicce fuscee, macula basali litura- 

 que discali testaceis, maculis duubus marginalibus vitreis ; 

 posticce subcinerece. 



Black, stout. Prothorax minutely punctured, distinctly 

 keeled in front; ridges tawny ; lateral horns very broad, triangular, 

 diverging, slightly ascending, acute at the tips, hardly curved back- 

 ward; hind horn compressed, keeled, very deep and convex, acute 

 at the tip, not extending to the tip of the abdomen. Fore wings 

 brown, with a testaceous spot near the base, a testaceous mark 

 in the disk, and two vitreous spots on the exterior border. Wings 

 tawny. Hind wings grayish. Length of the body 3 lines ; of the 

 wings 6 lines. 



a. North China. From Mr. Fortune's collection. 



Centrotus acer. -■ 



Niger, subpunctatus, valde pubescens ; prothorax cornubus lalerali- 

 bus longis lanceolatis acutis oblique ascendentibus ; cornu 

 posticum attenuatum, acutum, rectum, abdomen non superans ; 

 femora apice, tibia? tarsique ferruginea ; alee cinereo-vitrea ; 

 antica basi nigra punctata?, venis ferrugineis. 



Black, minutely punctured, very pubescent. Prothorax hardly 

 keeled in front ; lateral horns long, lanceolate, acute, diverging, 

 obliquely ascending ; hind horn attenuated, acute, quite straight, 



