1880.J 5 



(2) 3. Face without a spine, apex of tibiae black clavipes. 



(1) 4. Body not petiolated, 1st segment not terminating in a node. 



(30) 5. Cheeks beneath without a strong spine. 



(19) 6. Last segment of abdomen in £ not more strongly punctured than the pre- 



ceding, excavated in the $ . 



(14) 7. Basal area of metathorax not clearly denned. 



(9) 8. Posterior tibiae very clavate and rounded, without spines or teeth along its 



outer margin capitosus. 



(8) 9. Posterior tibiae more or less dentate or spinose. 

 (13) 10. Metathorax with a wide central channel, which is distinctly margined, front 

 legs of 6* simple. 



(12) 11. Legs entirely black leucostoma. 



(11) 12. Front legs testaceous -brown pubescens. 



(10) 13. Metathorax with a simple, narrow, central, impressed line, front legs of 



. the (J scutate cetratus. 



(7) 14. Basal area of metathorax clearly denned. 



(16) 15. Puncturation of thorax so fine and indistinct as to be scarcely visible, ex- 



cept under a strong power podagricus. 



(15) 16. Puncturation of thorax distinct. 



(18) 17. Clypeus black, front legs of S scutate ambiguus. 



(17) 18. Clypeus flavous, front legs of <? simple aphidum = WalJceri. 



(6) 19. Last segment of body in the <J more strongly punctured than the preceding, 



not excavated in the $ . 



(23) 20. Front legs of S scutate, both sexes with the calcaria of the front legs 



black, or with the clypeus and mandibles yellow. 

 (22) 21. Larger, basal area of metathorax large, shining, finely strigose, £ tibise 



scutate, clypeus and mandibles yellow palmar ius = scutatus. 



(21) 22. Smaller, basal area of metathorax small, dull, and very coarsely strigose, <J 



tibiae simple, 1st joint of tarsi scutate, calcaria in both sexes black .. 



palmipes. 



(20) 23. Calcaria of front legs pale, clypeus not yellow. 



(27) 24. Mesopleurae spinose. 



(26) 25. Metathoracic area striated varius. 



(25) 26. Metathoracic area smooth and shining exiguus. 



(24) 27. Mesopleurae not spinose. 



(29) 28. Thorax more or less shining, punctm-ation fine but not so very close, tibia? 

 widely pale at the base, metathoracic area polished and shining in both 

 sexes, rarely finely striate in the $ Wesmaeli. 



(28) 29. Thorax dull, puncturation very close, tibiae very narrowly pale at the base, 



metathoracic area deeply striate in the $ , striate at the sides only in 



the ? ...elongatulus. 



(5) 30. Cheeks with a strong spine 4-maculatus (black var.). 



