24 TROCEEDINGS OF THE NATIONAL MUSEUM. vol. 64 



Antennae about as long as body; joints beyond middle fully twice as long as 

 thick; tibiae and tarsi not especially conspicuously spined, the spines fewer 

 and smaller, those of hind basitarsus barely half as long as diameter of the 

 joint neomexicanus, new species. 



11. Apical tarsal joints very long and slender, that of middle leg in female at least 



as long as second joint, in male at least as long as third ; claws very large with 

 about twenty teeth in female, in male very closely pectinate. 



unguicularis, new species. 



Apical tarsal joints shorter and stouter, if approaching above proportions the 



claws not conspicuously large and with fewer teeth 12. 



12. Mesopleura, metapleura, and sides of propodeum very densely and rather coarsely 



punctate *. 13. 



Pleura with finer and well separated punctures, metapleura sometimes obliquely 

 striate. 16, 



13. Propodeum dorsally coarsely punctate; not transversely striate. 



. subfuscus Cresson. 



Propodeum more or less distinctly transversely striate, rarely finely granular 



without distinct striae 14, 



14. Temples rather broad and strongly convex; ocelli distant from eyes; hind femur 



rather stout, barely three-fourths as long as tibia cockerelli, new species. 



Temples very narrow, sloping sharply from shortly behind eyes; ocelli proxi- 

 mate to the eyes; hind femur slender, more than three-fourths as long as 

 tibia 15. 



15. 13 mm. or more; ocelli touching the eyes ocellatus Viereck. 



11 mm. or less; ocelli distinctly though narrowly separated from the eyes. 



ocellatus, var. microocellatus, new variety. 



16. Metapleurum obliquely striate throughout, not at all punctate 17. 



Metapleurum punctate or nearly smooth, sometimes obscurely striate below.. 20. 



17. Mesoscutum, mesosternum, epipleura, and venation blackish; second recurrent 



vein strongly antefurcal nigripectus Ashmead. 



Not black marked as above, stigma always pale; second recurrent vein intersti- 

 tial or postfurcal 18. 



18. Slender, first tergite about five times as long as wide at apex; hind femur very 



slender; antennae attenuate at apex, the subapical joints about three times 



as long as thick californicus, new species. 



Stouter, first tergite about four times as long as wide at apex; hind femur rather 

 stout; antennae not especially slender apically, the subapical joints scarcely 

 twice as long as thick... 19. 



19. Temples narrow, sloping; vertex yellow arizonensis, new species. 



Temples broad and strongly convex; vertex piceous leo, new species. 



20. Vertex yellow or concolorous with face 21. 



Vertex black or piceous 24. 



21. Mesothorax with distinct pale yellow markings 22. 



Mesothorax without a distinct pattern of yellow 23. 



22. Abdomen brownish at apex albovariegatus Provancher. 



Abdomen not brownish at apex; scutellum margined only at base. 



alaskensis Ashmead. 



23. Second intercubitus sharply bent, the areolet subquadrangular; ocelli practi- 



cally contiguous with the eyes; larger pallens, new species. 



Second intercubitus nearly straight, the areolet triangular; ocelli not nearly 

 touching the eyes; 9 mm pallens, var. barberi, new variety. 



24. Propodeum with a long, straight, gradual slope from base to apex, the apophyses 



practically wanting; first tergite about six times as long as wide at apex. 



townsendi, new species. 



