808 HYMENOPTERA OF AMERICA. [PART I. 



14. Metathorax rough, rather angulate ; 5th 



Segment margined with yellow. 



129. Texensis, var. 



14, 14. Metathorax rounded, rather rough ; 5th 



segment not margined.' 



127. Peirnsylvanicus. 



13, 13. The third segment margined with yellow. 



14. The following segments margined with 



,, 1-17. i Ihno. 



yellow. 



135. t mijstecus. 



14, 14. Segments 1-4 margined with yellow. 



15. Margin of 2d segment rather reflexed. 



121. collcija, var. 

 15, 15. Margin of 2d segment not reflexed. 

 16. Only the segment 1-4 5,1-5 % 

 margined with yellow. 

 17. Body elongate ; ahdomen cylin- 

 drical ; metathorax depressed, 

 flattened. 130. fasciculatus. 

 17,17. Body not so slender; abdomen 

 more ovate, contracted at base ; 

 metathorax short, rounded. 



133. Viclorice. 



16, 16. All the segments margined with 

 yellow. 

 17. Ornaments luteous ; anus black. 

 125. f Kennicotlianus. 



134. t Inca. 

 17,17. Ornaments yellow. 



18. All the margins wide; anus 



yellow. 137. mayus. 



18, 18. The last margins narrow; anus 



, , . 1 33. ( Victories. 

 black. 



I In, 



134. 



8,8. Posterior margin of prothorax adorned with yellow, 

 and often also its anterior margin quite black. 

 9. A free spot on each side of the 2d abd. segment. 



126. propinquus. 

 9, 9. No free spot on the 2d segment. 



10. Quite slender ; only the first two segments mar- 

 gined with pale sulphur-yellow. 

 • 11. Feet black ; tibise often maculate with yellow. 

 Small. 143. totonacus. 



Very small. 141. coyotus. 



11,11. Tibire and tarsi fulvous. 145. Tacubayoe. 

 10,10. Not so slender, abd. more ovate; all the seg- 

 ments margined with yellow. 

 11. Metathorax rugose, reticulately rugose or 

 punctate. 



