ODYNERUS. 307 



12,12. Will two free spots. 121. collega, var. 



13. Fossette of metathorax rather augulate 

 • superiorly. 129. Texensis. 



13, 13. Fossette of metathorax roujaded. 



121. collega, var. 

 11, 11. First and second segments without free yel- 

 low spots. 

 12. Only the first two abd. segments margined 

 with yellow or luteous. 

 13. Tibia? and tarsi quite yellow or ferrugi- 

 nous. 

 14. Rather large; margin of 2d segment 

 reflexed. 121. collega, var. 



14, 14. Smaller, slender ; margin of 2d segment 

 not reflexed. 

 15. Ornaments wide, deep yellow ; 2d 

 segment strongly punctate. 

 128. .perennis. 

 15, 15. Ornaments narrow, pale sulphur-yel- 

 low ; 2d segments finely punctate. 

 145. ( Tacitbayai, var. 

 148. Mohicanus. 

 147. ! Huro. 

 136. [ Catlepetlensis. 

 13, 13. Tibiae and tarsi black, or maculate with 

 yellow or luteins. 

 14. Insect not very slender ; ornaments yel- 

 low ; abdomen ovate, margin of first 

 segment wide, widened on each side ; 

 feet black. 135. mystecus. 

 14, 14. Insect slender. 



15. Ornaments pale. 



16. Abdomen truncate at base ; meta- 

 thorax superiorly margined by 

 an arcuate crest. 



138. Araucanus. 

 16, 16. Abd. spindle shaped ; metathorax 

 not crested superiorly. Yellow 

 margins quite narrow. 



144. / coyolus, var 

 146. i pruinosus. 

 143. * totonacus, var. 

 15, 15. Ornaments yellow ; first abd. seg- 

 ment rather sessile, square above, 

 rugose. 131. figulus. 



12, 12. More than two segments margined with 

 yellow. 

 13. Segments 1, 2, 4 margined with yellow. 



