590 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. 50. 



17. Tibiae dotted or banded with brown or black 19. 



Tibiae immaculate. 



Ovipositor not extending beyond tip of abdomen 18. 



Ovipositor protruded slightly, no black on occiput, propodeum or abdomen. 



21. rusti, new species. 



18. First four funicle joints subequal, last two longer 22. pulvinariae Howard. 



First and last funicle joints longer, second to fifth subequal. 



23. claviger, new species. 



19. Pedicel black or brown at base, with apex white or yellowish 20. 



Pedicel brown with a longitudinal streak of white on the upper side. 



24. maculipes Howard. 



20. Cheeks not marked 21. 



Cheeks blotched with brown next to the mouth 25. calif ornicus Howard. 



21. Scape moderately or narrowly expanded 22. 



Scape one-half as wide as long, club nearly as wide as long, rounded at apex. 



26. annulipes (Ashmead). 1 



22. Head and eyes nearly bare, scape narrowly expanded, narrower than club. 



15. lounsburyi Howard. 



Head and eyes moderately to thickly pubescent, scape usually moderately wide, 

 or wider than club 22. pulvinariae Howard. 



23. Ovipositor not protruding or only slightly 26. 



Ovipositor protruded about one-fourth the length of abdomen. 



Ocelli in an acute-angled triangle 24. 



Ocelli in a right-angled triangle 27. oaxacae Howard. 



24. Front and vertex over one-half longer again than wide, scutellum and mesopleura 



concolorous with the scutum 25. 



Front and vertex about one-half longer again than wide, scutellum and most of 

 mesopleura blackish 28. ceroplastis Howard. 



25. Abdomen except the sides blackish 29. mexicanus Howard. 



Abdomen with but little trace of infuscation at the center. . . 30. eruptor Howard. 



26. Front and vertex narrow, ocelli in an acute-angled triangle 27. 



Front and vertex wide, ocelli in an equilateral triangle. . 31. stomachosus Girault. 



27. Club blackish with most of the second and the third joint pale 30. 



Club entirely brown or blackish 28. 



28. Club brown, funicle either yellowish or brownish 29. 



Club and first three funicle joints black, last three funicle joints white. 



32. eriococd, new species. 



29. Scape and pedicel brown, the funicle yellowish, general color of body yellowish 



brown, more yellow beneath 33. brunneus Howard. 



Antennae entirely brownish, general color black, shining but not metallic. 



34. nitens Kourdumoff. 



30. Legs uniformly yellowish, tibiae not dusky or banded 31. 



Tibiae (posterior pair at least) dusky, vertex and notum "testaceous," face 



yellow 35. hederaceus (Westwood). 



31. Scape marked with a small, longitudinal streak on upper margin near apex 33. 



Scape marked with a large, quadrate, oblique spot near or beyond the middle. . 32. 



32. Scape widest just before apex, last two funicle joints a little wider than long. 



36. alberti Howard. 



Scape widest at the middle, last two funicle joints about twice as wide as long. 



37. philippiae Martelli. 



1 The type of A. annulipes (Ashmead) has lost both wings, and it is possible but not likely that they 

 were banded inconspicuously, although Dr. Ashmead does not mention this character. If the wings are 

 banded, the species would run to A. similis, from which it differs in having the antennae much shorter 

 and the club rounded at apex. 



