348 COLEOPTERA OF NORTH AMERICA. 



Although the large number of genera named in this sub-tribe 

 induced Dr. Chapuis to divide it into twenty-seven groups, our 

 limited representation seems to us better adapted for a siujple 

 synoptic table, which has been adopted with necessary additions 

 and slight changes in nomenclature from the memoir of Dr. 

 LeConte. 



Claws with a broad basal dilatation (appendiculate). 2. 



Claws cleft or acutely toothed. 8. 



Claws acute, entire, or not according to sex. 11. 



2. Antennae with 1st joint long, 3d longer than 4th ; epipleurse entire ; 



front coxse contiguous ; tibial spurs distinct. o. 



Antennae with 1st joint moderate in length (front coxae usually con- 

 tiguous). 4. 



3. Antennfe of % not deformed. Cerotoma. 

 Antennae of % with 3d and 4th joints deformed. Andrector. 



4. Elytra with distinct epipleurae. ,'). 

 Elytra without epiijleurae. Phyllobrotica. 



5. Epipleurae not extending to sutural angle. (J. 

 Epipleurae extending to sutural tip. 7. 



6. Last joint of maxillary palpi small, subulate. Phyllecthris. 

 Last joint of maxillary palpi conical, acute. Luperus. 

 Last joint of maxillary palpi longer ; prosternum visible between the 



coxae ; % with last ventral impressed, 3d and 4th with curved pro- 

 cesses ; tip of elytra plicate and distorted ; epipleurae wide in front. 



Androlyperus. 



Palpi of Luperus ; epipleurae narrow ; % with last ventral excavated, 



and a mammilla in the middle of the excavation ; hind tibiae long, 



curved, and with a distinct tooth on the inner side at the basal 



third ; prosternum not visible between the coxae. Scelolyperus. 



7. Upper margin of epipleurae thick, obtuse. Agelastica. 

 Upper margin of epipleurae sharp, prominent ; $• with abbreviated 



elytra, inflated abdomen, and no wings. Metacycla. 



8. Tibiae not sulcate on the outer side. 9. 

 Tibiae deeply grooved on the outer side ; prothorax with a posterior 



transverse groove. Moiiocesta. 



9. Front flat, with a median impressed line. 10. 

 Front carinate ; prothorax with two deep impressions. Diabrotica. 



10. Epipleurae extending to the sutural angle. 11. 

 Epipleurae not extending to the tip. Trirhabda, 

 Front coxal cavities entire. Adinionia. 

 Front coxal cavities open behind. . Galeruca. 



11. Front narrow, not carinate ; epipleurae extending to the sutural angle ; 



pygidium perpendicularly deflexed. Monoxia. 



Metacycla is Gaslrogyna of Dr. LeConte's memoir, having 

 been previously described by Mr. Baly. Galerucella Crotch 



