298 THE CANADIAN ENTOMOLOGIST 



36 (37) Antennae long, reaching nearly to end of clypeus, first 



joint distinctly more than half the length of second; 



spur with a few distinct teeth on hind 



margin Kormus. 



37 (36) Antennae not so long, reaching about end of face, second 



joint about double as long as first. 



38 (39) First joint of hind tarsus longer than the other two 



together, spur with many fine teeth on hind 



margin : A v ectopia. 



39 (38) First joint of hind tarsus not so long as the other two 



together, spur with minute tooth at apex, but none 



on hind m.argin, or very minute hair-like 



ones Eurysa. 



40 (35) Carinas of head distinct. 



41 (52) Face with two medio-longitudinal carina?. 



42 (45) Vertex distinctly broader than long. 



43 (44) Face angular, as wide as long ^....Amhlycotis, 



44 (43) Face longer than wide; carinae on face indistinct, especi- 



ally at base and over vertex Eurybregma. 



45 (42) Vertex much narrower in proportion to length. 



46 (49) Apex of vertex subangular, making vertex somewhat 



5-sided or apex broadly conical. 



47 (48) Face broad, about as broad as long, medio-longitudinal 



carinae very faint, especially at base, dividing face 

 into three subequal parts Metropis. 



48 (47) Face much narrower, decidedly longer than broad; 



median carinae not so faint, contiguous or very 

 approximate at base and apex; median portion of face 

 narrower than lateral portions Jessidceus. 



49 (46) Apex of vertex truncate or but little rounded, vertex 



square or little longer than wide, not 5-sided. 



50 (51) Lateral carinae of pronotum divergingly curved, not 



reaching hind margin Criomorphus. 



51 (50) Lateral carinae of pronotum straight, reaching hind 



margin Macrotomello. 



52 (41) Face with one medio-longitudinal carina, simple or 



furcate. 



