BUFFALO SOCIETY OF NATURAE SCIENCES 391 



This germs is very close to Oxycarenus but in the latter the 

 rostrum is longer, attaining the base of the abdomen, and the 

 prosternum is sulcate. 



Type : Lygmis disconotus Say. 



Key to the species of Crophius. 



Rostrum long, reaching to the middle of the metasternum; cin- 

 erous, fusco-punctate ; pronotum short, 7, scabrosus Uhler. 



Rostrum shorter, not attaining the base of the mesosternum, 1 



1. Anterior margin of the pronotum concolorous or nearly so, 2 

 -. Anterior margin of the pronotum with a distinct pale collar, 4 



2. Legs ferruginous or rufo-ferrnginous, unicolorous; elytra 



whitish, fusco-punctate ; disk of the membrane and discal 

 nervures of the corium fuscous, /, disconotus Say 



-. Femora piceous except at tip; membrane infuscated, the 

 apical margin broadly pellucid, 3 



3. Clavus and corium cream-white, immaculate ; pellucid mar- 



gin of the membrane dotted, j, Heidemanni n. sp. 



Clavus and broad apex of the corium black; basal angle of 

 the membrane with a white spot, <?, Schwarzi n. sp. 



4. Head piceous or black; femora infuscated or black, at least 



above, 5 



-. Head and legs ferruginous, concolorous, 5, angiistatus n. sp. 



5. Pronotum black, sometimes shading to ferruginous brown 



posteriorly; anterior margin abruptly whiter; hind edge 

 obscurely paler, at least on the middle, 4., Bohemani Stal 



-.. Pronotum ferruginous brown, with a black band across the 

 callousities and five obscure pale vittae posteriorly; the 

 posterior lobe distinctly impressed on the middle and 

 before each humeral angle ; anterior margin paler, becom- 

 ing whitish at the median line, 6, impresses n. sp. 



