Le 'Jo n to.] 



B AKIN I. 



307 



B. Elytra conjointly rounded at tip, or nearly so; pyuidinm not exposed, 

 or Yery slightly visible: pask-rior edge of pn>thoni\ usually cinargi- 

 nate in front of mesostormjm;* form subrhomboidal, side pieces of 

 metathorax wide. 



Emargination of hind margin of prothorax small 



Enmrgination of hind margin of prothorax deep; 



body densely clothed with coarse capillary 



scales; elytra sometimes with denuded spots. . . 



X\ Prothorax tubularly constricted in front 



" moderately " " " 



Beak strongly punctured and striate; prothorax 

 coarsely punctured 



3. Beak nearly smooth ; prothorax more finely punc- 



tured 



Beak strongly punctured; prothorax less finely 

 punctured 



4. Sides of prothorax strongly rounded; prosternuin 



deeply impressed in front of the coxae, emargi- 



nate behind 



Sides of prothorax oblique, feebly rounded; pro- 

 sternum impressed near the apex, not emargi- 

 nate behind 



5. Sides of prothorax much rounded 



" oblique, feebly rounded 



6. Pubescence gray squamose 



'' capillary, (prosternum not emar- 

 ginate behind). . . .. 



7. Prothorax gradually narrowed in front 



" more suddenly narrowed near the tip.. 



8. Second joint of funicle equal to third; scales uni- 



form 



Second joint of funicle longer than third; scales 

 yellow and black, forming stripes 



9. Prosternum with three impressions in front 



Prosternum with one small impression near the 



apical margin 



C. Elytra conjointly rounded at tip, or nearly so; pygidium not exposul 



or very slightly visible; posterior edge of prosternum not emargi 



nate in front of mesosternum; form elongate. 

 Prosternum transversely impressed as usual by the 



subapical constriction 



Prosternum with two slight ridges, indicating a 



broad but feeble pectoral groove 



Prosternum foveate near the apical margin 



5. Scales moderately large, quite evident 



" small, hair-like, inconspicuous 



*The exceptions are C. modestus, capillatus, and perhaps linccllus. 



2. 



2. penicelhis. 

 3. 

 5. 



4. 



3. laevirostris. 

 4. punctirostris. 



5. striatirostris. 



6. modestus. 



6. 

 7. 



7. perscilhis. 



9. capillatus. 

 8. 



8. neg-lectus. 



9. 



12. lineelhis. 

 1O. picummis. 



11. perscitus. 



2. 



8. 

 9. 

 3. 

 5. 



