LeConte.] 



CEUTORHYNCHINI. 



273 



According to the form of the claws and the number of joints of the 

 funicle the species fall into natural groups, as follows : 



A. Claws cleft. 



a. Funicle 7-jointed Sp. 1-3. 



b. Funicle 6-jointed Sp. 4. 



B. Claws toothed near the base ; funicle 7-jointed. . Sp. 5-8. 

 O. Claws simple. 



a. Funicle 7-jointed Sp. 9-10. 



b. Funicle 6-jointed Sp. 11-18. 



A-a. Claws cleft ; funicle 7-jointed ; thighs toothed. 

 More finely sculptured; elytra without basal spot; 



Pubescence very fine, brown 1. subpubescens. 



" coarser, gray 2. rapse. 



Coarsely sculptured, elytra with white basal spot 3. sulcipennis. 



A-b. Claws cleft, funiculus 6-jointed ; thighs toothed. 



Coarsely sculptured, elytra with a white basal spot 4. decipiens. 



B. Claws toothed at the base ; funicle 7-jointed. 



Prothorax more finely punctured 2. 



very coarsely punctured, deeply sulcata 5. rudis. 



2. Elytra without conspicuous basal spot, thighs 



not toothed 3 . 



Elytra with conspicuous basal spot, thighs toothed 6. sericans. 



3. Prothorax with sides much rounded 7. convexicollis. 



" " " more oblique 8. pusillus. 



C-a. Claws simple ; funicle 7-jointed. 



Brown, mottled above with fine pubescence 9. pusio. 



spotted with large white scales 10. squamatus. 



C-b. Claws simple ; funicle 6-jointed. 



Elytra with spots of white scales. 2. 



" " an indistinct basal spot 3. 



2. Elytra with a narrow angulated band 11. angulatus. 



" "an oblique lateral spot 12. obliquus. 



" " basal spot and larger lateral one 13. tau. 



" with suture and lateral spot white ; red 



behind the middle 14. semirufus. 



Elytra with broad pale sutural vitta 15. medialis. 



3. Densely clothed with small apprgssed hair-like 



scales 16. septentrionalis. 



Brown, coarsely squamose 17. Ziramenxianni. 



Blackish, clothed with scale-like pubescence 



not appressed 18. puberulus. 



A — a. 

 1. C. subpubescens, n. sp. 



Oblong, narrowed in front, brownish-black, above thinly clothed with 

 very fine brown pubescence ; beneath with small grayish scales. Head 

 rnoc. AMER. PHiLOS. sec. XV. 96. 2i 



