516 PROCEEDINGS OF THE NATIONAL MUSEUM vol. 93 



Apex of hindwing blunter, as in fig. 20, g. i; fringe at posterior margin one- 

 third or less as wide as wing at hamuli 63 



61. First funicle segment of antenna, long, slender, more than four times as long 



as wide, fig. 16, g gibboni (Girault) (p. 574) 



First funicle segment not more than two and one-half times as long as 

 wide 62 



62. All funicle segments equal in length ; surface of mesoscutellum smooth. 



polynemae Ashmead (p. 575) 

 First funicle segment one and one-half times as long as second (fig. 16, e) ; 

 surface of mesoscutellum with distinct, shallow reticulations. 



oecanthivorus compar Gahan (p. 575) 



63. Dorsum of thorax bright yellow with iridescent black or bluish-green spots. 



venustus Gahan (p. 576) 

 Dorsum of thorax not having a combination of yellow and iridescent colora- 

 tion 64 



64. Thorax metallic green with the tegulae and a spot on dorsal margin of 



mesopleuron yellow ; bases of hind coxae dark, remainder of hindlegs and 



other legs entirely, yellow or white xanthops (Ratzeburg) p. 577) 



Not having that combination of colors ; thorax either entirely yellow, or brown, 

 black, or iridescent blue-green without a yellow spot on dorsal margin of 

 mesopleuron 65 



65. Propodeum with paraspiracular carinae, as in fig. 21, a-d 66 



Propodeum without paraspiracular carinae, as in fig. 21, e, f 67 



66. Metatibiae usually entirely light yellow or white, sometimes slightly darkened, 



occasionally mostly brown ; metapleuron with rather deep, close, scale-like 

 reticulations, the lateral area of propodeum with shallower, more indistinct 

 reticulations (fig. 17, f) ; metacoxae with a distinct, iridescent purple luster; 

 gaster never greatly longer than thorax and propodeum combined, at most 

 one and one-third times as long, the two tagmata often equal in length. 



racemariae Ashmead (p. 578) 

 Not having that combination of characters; metatibiae always mostly dark 

 brown; metapleuron and lateral area of propodeum both with nearly the 

 same type of sculpture (fig. 17, g) ; metacoxae black. 



cormus, new species (p. 579) 



67. Mesopraescutum lacking a median, longitudinal groove and bearing one row 



of bristles at each lateral margin ; body black or very dark brown, with very 

 faint bluish or greenish iridescent reflections sometimes visible; tibiae 

 entirely light yellow or white; surface of propodeum almost smooth, its 

 median length one-third as great as length of mesoscutellum; spiracles 

 contiguous with anterior margin of propodeum ; gaster only slightly longer 



than thorax and propodeum combined minutus (Howard) (p. 5U0) 



Not having that combination of characters; median longitudinal groove of 

 mesopraescutum usually distinct 68 



68. Marginal vein of forewing four or more times as long as stigmal vein ; body 



elongate and black, with very faint iridescent bluish or greenish luster__ 69 



Not having that combination of characters ; marginal vein of forewing never 



more than three and one-half times as long as stigmal vein, usually less 



than three times as long 70 



69. Mesotibiae entirely light yellow or white; marginal vein of forewing four 



and one-half times as long as stigmal vein faustus, new species (p. 582) 



Mesotibiae partly dark brown ; marginal vein four times as long as stigmal. 



hibus, new species (p. 582) 



70. Body iridescent green, blue, blue-green or somewhat purplish (not visible in 



teneral specimens) ; may be very dark brown or black with rather faint 



