0DYNE11US. 301 



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



13. Fossette of metatborax rather* angulate 

 superiorly. 129. Texensu. 



13,13. Fossette of metathorax rou-nded. 



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. 

 3 28. perennis. 

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

 low ; 2d segments finely punctate. 



145. { TacubaycBfVar. 

 148. j Mohicanus. 

 147. | Huro. 



136. { Catlepethnsis. 

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

 yellow or luteous. 

 14. Insect not very slender ; ornaments yel- 

 low ; abdomen ovate, margin c f first 

 segment wide, widened on each side ; 

 feet black. 135. mystecus. 

 14, 14. Insect slender. 



15. Ornaments pale. 



1G. 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. / coyotus, var 



146. i pruinosus. 

 14'>. <■ totonacusi var, 



15, 15. Ornaments yellow ; first abd 



men! rather sessile, square above, 

 rugose, 131. Jigulus, 



12,12. More than two segments margined with 



yellow. 



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



