518 PROCEEDINGS OP THE NATIONAL MUSEUM vol. 93 



SO. All funicle segments broad and short, and each segment slightly broader and 

 shorter than the segment proximad of it, club broad, subglobose, as in 

 fig. 10. f 81 



All funicle segments nearly or quite equal in width, and club not conspicu- 

 ously short 82 



81. Mesopraescutum with two rows of bristles at each lateral margin; spiracles 



separated from anterior margin of propodeum by a space one-half as great 

 as length of a spiracle: antennal funicle and club both brown. 



thanasimi Ashmead (p. 591) 



Mesopraescutum with one row of bristles at each lateral margin; spiracles 



contiguous with anterior margin of propodeum; antennal funicle brown, 



club yellow varicornis (Girault) (p. 502) 



82. Head and body entirely brown or black 83 



Head and body partly or entirely yellow ; at least area of head around mouth- 

 parts and mesal area of postscutellum yellow 87 



83. Mesal length of propodeum one-fourth as great as length of mesoscutellum ; 



body broad, short and compact ; length of gaster equal to or less than length 

 of thorax; gaster broad, thorax and abdomen appear to be equal in width; 

 mesopraescutum broader than long; body uniformly dull brown or black. 



neuroteri (Ashmead) (p. 592) 

 Not having that combination of characters 84 



84. Tibiae partly dark brown or black ; first funicle segment one and one-sixth 



times as long as second segment ; body shining black, and antennae entirely 



black silvaticus Gahan (p. 593) 



Tibiae usually entirely light yellow or white, occasionally faintly shaded with 

 tan, but never partly dark brown or black 85 



85. Segments of antennal funicle elongate, first segment one and one-third times 



as long as second nebraskensis (Girault) (p. 594) 



Segments of antennal funicle subquadrate, first and second segments equal in 

 length or second slightly longer than first S6 



86. (aster elongate, slender; twice as long as thorax rosae Ashmead (p. 595) 



Gaster subglobose (flattened in dry specimens), only slightly longer than 



thorax blastophagi (Ashmead) (p. 595) 



87. Spiracular grooves of propodeum almost obliterated, median length of pro- 



podeum three-eighths as great as length of mesoscutellum ; one stout bristle 

 present laterad of each propodeal spiracle ; abdomen subglobose, slightly 

 broader than thorax, and apices of ovipositor sheaths just reaching apex 



of abdomen lasius, new name (p. 5C6) 



Spiracular suture clearly extending from spiracle to posterior margin of 

 propodeum; apices of ovipositor sheaths slightly exceeding apex <>f 

 abdomen 83 



88. First funicle segment of antenna one and one-third times as long as second 



segment 89 



First funicle segment as long as or slightly shorter than second segment— 90 



89. Dorsum of thorax mostly yellow, abdomen yellow with transverse brown 



bands juniperi (Crawford) (p. 597) 



Dorsum of thorax almost entirely brown ; abdomen uniformly brown. 



nebraskensis (Girault) (p. 594) 



90. Second funicle segment of antenna longer than first; median length of pro- 



podenum one-third as great as length of mesoscutellum ; body mostly brown, 



abdomen uniformly brown impexus Girault (p. 597) 



First and second funicle segments equal in length ; median length of propodeum 

 one-fifth as great as length of mesoscutellum; body usually mostly yellow, 

 abdomen with transverse brown bands— marylandensis (Girault) (p. 598) 



