86 THE CANADIAljr ENTOMOLOGIST. 



12. Second joint of antennae large ( Ceramhycoides) 36. 



Second antennal joint small 13, 



13. Eyes coarsely granulated 14. 



Eyes finely granulated '. 21. 



14. Front coxal cavities open behind 15. 



Front coxal cavities closed behind ; small pale species with the first 



abdominal segment very long 20. 



15. Scutellum acute, triangular, antennae very long, prothorax with lateral 



spine Chion. 



Scutellum rounded behind 16. 



16. Elytra with elliptical elevated ivory-like spots, in pairs Eburia. 



Elytra without raised ivory-like spots 17. 



17. Femora not strongly clubbed, antennae spinose 18. 



Femora strongly clubbed 19. 



18. Large species ; metathoracic episterna narrower behind, .^^^^/a/^/zw. 

 Moderate-sized species, episterna parallel Elaphidion. 



19. Antennae bisulcate externally Tyionoius. 



Antennae not sulcate nor hairy Heterachthes. 



Antennae not sulcate but quite hairy Gracilia. 



20. Prothorax much narrower at base than at apex Phytoti. 



Prothorax dilated at middle, but about equal at base and Si\)t\..Obrium. 



21. Elytra either very short, not covering the abdomen, or rapidly narrow- 



ing behind and broadly dehiscent along the suture* 22. 



Elytra normal, not abbreviated nor notably dehiscent. 23. 



22. Elytra about as long as the prothorax Molorchus. 



Elytra about twice as long as the prothorax . Callimoxys. 



23. Scutellum rounded or (in Cyllene) broadly triangular 24. 



Scutellum acutely triangular 25. 



24. Tibial spurs small, thighs suddenly and strongly clubbed. Form slen- 



der and cylindrical. Black, elytra and abdomen ?>c2ix\t\...Ancylocera. 

 Tibial spurs large 27. 



25. Prothorax opaque, sides with spine or large tubercle 26. 



Prothorax shining, sides unarmed Batyle. 



26. Elytra coarsely punctate, sutural angle produced Purpuricenus. 



27. Tibite strongly carinated, form slender. Elytra without narrow cross- 



bands of pubescence, punctuation sparse and coarse. Antennae 

 as long ( $ ) or longer ( ^ ) than the body Stenosphetiu^, 



