Mar.,1909.1 Fall: Synopsis of Ochod.^us. 31 



Posterior tibice of male with a more or less sharply defined tooth or angulation 

 at apical fourth ; posterior femora with unciform tooth at apex. 



4. planifrons Schaef. 

 Posterior tibia; of male "slightly dilated at middle"; posterior femora not 

 toothed at apex 5. ulkei Horn- 

 Vertex with more or less distinct short transverse carina ; elytral strire more deeply 

 impressed and less finely punctured. 

 Mentum as long as wide, rather deeply longitudinally impressed in front, more 

 broadly so posteriorly ; posterior femora of male with apical unciform tooth ; 

 posterior tibia; of male with an acute tooth just behind the middle. 



6. vmsctilus Say. 



Mentum transverse, not impressed, posterior femora of male toothed at apex ; 



posterior tibias of male simple 7. stria tus Lee. 



6. Color uniform, but varying from brownish to testaceous. 



Vertex of male with a transverse carina, which is feebler or sometimes lacking 

 in the female. 

 Vertical carina short, interrupted at middle ; frontal lobe not margined. 



8. inarmatus Schaef. 

 Vertical carina longer, not interrupted at middle ; frontal lobe strongly 



margined 9. kansanus sp. nov. 



Vertex not carinate in either sex. 



Frontal margin (male) elevated each side into a small acute tubercle ; hind 

 femora of male toothed on lower edge at apical third. .lo. biarmatiis Lee. 

 Frontal margin and hind femora simple in both sexes. 



II. peninsttlaris Horn. 



Head and thorax black, elytra dull brownish yellow, under surface and legs 



piceous 12. catifornictis Horn. 



7. Front not distinctly tuberculate, the upper or posterior cariniform margin of the 



frontal lobe merely a little more prominent at middle ; hind tibise flattened, 



parallel, and about one third as wide as long (male) 13. prasidii Bates. 



Front tuberculate 8. 



8. Frontal lobe broad, the tubercle at the anterior margin. 



Hind tibse broadly flattened and compressed, about one half as wide as long 



(male) 14. repandus sp. nov. 



Hind tibce normal 15. nimius Fall. 



Frontal lobe more strongly advanced, the tubercle more or less remote from the 

 margin. 

 Mandibles almost evenly arcuate externally, frontal lobe truncate. 



16. frontalis Lee. 

 Mandibles subangulate and sinuate externally, frontal lobe arcuate. 



Mentum rather deeply emarginate at apex, the lateral angles acute ; frontal 

 tubercle strongly developed, forming a short stout horn. 



17. mandibularis Linell. 



Mentum with a small faint emargination at apex, the lateral angles rounded; 



frontal tubercle small 18. sparsus Lee. 



9. Form elongate; hind trochanters spined, one spur of both middle and hind tibse 



pectinate 19. estriatus Schaef. 



