WILLIAMS: LARRID.^ OF KANSAS. 161 



Males. 



1. Inteiocular space at vertex about two-thirds or more the inter- 



ocular space at the lower edge of the eyes; upper portion of 

 frons and vertex with rather long, sparse, erect pile, which is 

 about as long as the diameter of an antennal joint, head rather 

 sparsely punctate and polished, pseudo-ocelli present (as 



in o o ) ; abdomen red-tipped, rarely entirely black 2 



Interocular space at vertex one-half or less (seldom a little more 

 than) the same space at the lower edge of the eyes; no long, 

 erect pile on vertex; no pseudo-ocelli behind the posterior 

 ocelli 3 



2. Front with rather fine, close punctures terminatus 



Front with larger separate punctures fusus 



3. Abdomen red, or red and black 4 



Species entirely black 12 



4. Sides of propodeum distinctly striate throughout, often punctate 



between striae 5 



Sides of propodeum not striate, or striate only at edges, coriace- 

 ous, finely granulate or reticulate 9 



5. Anterior margin of clypeus slightly emarginate mesad ; disc of 



propodeum coarsely and irregularly wrinkled; length, 9 mm. 



qucbccensii 

 Anterior margin of clypeus not emarginate niesad; disc of propo- 

 deum not as above 6 



6. Apex of femora, tibiae and tarsi entirely, reddish yellow. . .minimus 

 At most the tarsi are partly reddish or reddish brown 7 



7. Small, slender species; length, about 6 mm.; apical half of abdo- 



men black nigrocaudatus 



Larger, stouter species; abdomen all red 8 



8. Third antennal joint not twice its apical width, antennse rather 



stout, a little thickened mesad; thorax and propodeum shining, 



sparsely pilose te.xanus 



Third antennal at least twice its apical width, antenns hardly 

 thickened mesad; thorax and propodeum with rather abun- 

 dant pile farsatus 



9. Abdomen entirely red; clypeus subtruncate (fig. 62); stout spe- 



cies tarsatus. 



Abdomen dark or black apically; clypeus rounded or subtruncate. .10 

 10. Stout species; length, 6.75 mm.; scutum very finely and closely 

 punctate ; longer spur'of metatibiae as long as first joint of hind 

 tarsi; abdomen about equally red and black; an even growth of 



brassy pile on disc of scutum robustior 



Slender species; longer spur of metatibse distinctly shorter than 

 first joint of hind tarsi; abdomen more red than black 11 



