250 The Ohio Naturalid. [Vol. XI, No. 3, 



No type species for the genus was indicated by Uhler and 

 none so far as I know has been named since. I w^ould therefore 

 name immistus Say., the first species Hsted by Uhler in his paper 

 describing the genus, and a distinctly representative species, as 

 the type. 



With some slight emendations the key presented in my former 

 paper seems to possess the essential basis for the arrangement of 

 the species, and in the revised key this arrangement has been 

 followed in the main, simply making such additions and changes 

 as pennit of the inclusion of the other American species. 



Key to the American Species. 



Lorae remote from the margin of the eheeks; common elj'tral picture cru- 

 ciate; claval vein straight, meeting suture at acute angle 1 



Lorae contiguous to or merging with border of cheeks, elytral picture not 

 cruciate, outer claval vein curved or hooked at the distal end. . . .2 



1. Face yellow without cross bands sanctus Say 



Face with two dark cross bands beside frontal arcs '6 



3. Vertex short, very obtuse, size small, 4 mm fasciatus Osb. 



Vertex longer, rounded or sub-angular, size larger 4 



4. Fore and middle femora yellow annulated with black. . .neglectus nsp 

 Fore and middle femora black, base and apex yellow. . .cruciatus nsp 



2. Post nodal cell scarcely widened distally _ 5 



Post nodal cell much widened distally 6 



'•). Post nodal cell without cross veinlets 7 



Post nodal cell with cross veinlets 8 



7. Nodal vein arising from discal cell auronitens Prov. 



Nodal vein arising from anteapical cell 9 



9. Vertex flat with transverse impressed line 10 



Vertex convex, no impressed line, edges rounded 11 



10. Nodal vein from front of cell jucundus L'hl. 



Nodal vein from middle of cell fumidus Ball 



11. Vertex wider than long, obtuse or rounded 12 



Vertex as long or longer than wide, acute, scalaris V.D.-stigmosus Uhl.? 



12. Vertex subacute 14 



Vertex obtuse or rounded, small mexicanus Osb. 



14. Nodal cell more than twice as long as wide 16 



Nodal cell but little longer than wide unicolor Osb. 



16. Claval spots oval distinct albonotatus V. D. 



Claval spots elongate faint consors Uhl. 



8. With few cross nervures in costal cell . . .' 17 



With numerous cross nervures in costal cell 18 



17. Clavus reticulate irroratus nsp. 



Clavus not reticulate lobatus \\ D. 



18. With brown saddle on elytra scrupulosus Ball 



19. Without brown saddle on elytra blandus Ball 



6. Outer claval not strongly hooked at distal end, cross nervure to 



claval suture indistinct or wanting 20 



Outer claval strongly hooked at distal end, usually with distinct 

 cross nervure from outer claval to claval suture 21 



20. Outer claval sinuate approaching inner near its middle .22 



Outer claval nearly straight and parallel to inner, curved at tip 23 



22. Light ochreous, ultimate ventral segment truncate or slightly 



notched ochraceous Osb. 



Marked with fuscous, ultimate ventral segment produced, productus Osb 



