CEUTORHYNCHINI. 



273 



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



fanicle the species fall into natural groups, as follows : 



A. Claws cleft. 



a. Funicle 7-jointed 



b. Funicle 6-jointed 



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

 O. Claws simple. 



a. Funicle 7-jointed 



b. Funicle 6-jointed 



Sp. 1-3. 

 Sp. 4. 

 Sp. 5-8. 



Sp. 9-10. 

 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 sulcate 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 ; 1O. 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. obliquue. 



" 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 appressed hair-like 



scales 16. septentrionalis. 



Brown, coarsely squamose 17. Zimmermanni. 



Blackish, clothed with scale-like pubescence 



not appressed 18. puberulus. 



A a. 



1. C. subpubescenff, n. sp. 



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



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



PROC. AMER. PITILOS. SOC. XV. 96. 2l 



