Britisli Hemiptera-IIeterojjtera. 645 



E. Intermediate claws as long as, or longer than, 

 the tarsi. 



a. Thorax in front with a slightly raised 



tubercle on the dorsal line . . concimia. 



b. Thorax in front without a slightly 



raised tubercle on the dorsal line . . cognata. 



EE. Intermediate claws not so long as the tarsi. . sodalis. 



CC. Markings so obscure as to be scarcely observ- 

 able . . . . . . . . . . , . Wollastonl. 



AA. Posterior metatarsi not spotted at the apex. 



B. Corium not rastrate. 



C. Thorax pale, with very narrow black lines, 



verj' much narrower than the intervening- 

 pale spaces . . . . . . . . . . liieroglyjihlea. 



CC. Thorax with wider dark lines. 



a. Thorax with the dorsal line scarcely 



perceptible .. .. • .. .. hignbrls, 



b. Thorax with the dorsal line distinctly 



raised in front . . . . . . Stall, 



BB. Corium more or less rastrate. 



C. Thorax without a decided central carina, 



generally with a slight tubercle near the 

 anterior margin. 



D. Larger species. 



E. Clavus and corium dull, very rastrate. 



a. Thorax with 6 pale lines . . . . LinncBi. 



b. Thorax with 7— 8 pale lines .. .. Sahlbergi. 

 EE. Clavus and corium more or less shining, 



F. Thorax with 6 — 7 dark lines. 



a. Clavus with the basal lines very wide 



inwardly . . , . . . . . striata. 



b. Clavus with the basal lines not widened 



inwardly . .. .. .. vernicosa. 



FF. Thorax with 8—9 dark lines. 



a. Lobes of prosternum narrow and twisted Fallenii. 



b. Lobes of prosternum broad .. .. distincta. 

 DD. Smaller species. 



E. Intermediate tibife scarcely longer than tarsi; 



tarsi subequal in length to the claws . . mossta. 

 EE. Intermediate tibiae much longer than tarsi; 

 tarsi much shorter than claws. 



F. Thorax with 7 — 9 pale lines. 



G. Transverse markings of the corium not inter- 



rupted by longitudinal dark lines . . Fabricii. 



GG. Transverse markings of the corium inter- 

 rupted by longitudinal dark lines. 



a. By two lines placed near the inner 



apical angle .. .. .. lim.itata, 



b. By three lines . . • . . . semutriata. 



c. By four lines, one at the inner pos- 



terior angle . . .. .. ., remtxta. 



