492 PROCEEDINGS OF THE NATIONAL MUSEUM. vol. 5S. 



55. Propodeiim smooth and polished ; abdominal tergites mostly smooth 



55. parallelis (Ashmead), 

 Propodeum and the two basal abdominal tergites coarsely rugose 56. 



56. Most of the thorax and the abdomen entirely red or reddish-testaceous 



56. nigrovariatus, new species. 

 Thorax entirely and most of the abdomen bhick__57. consimilis (Viereck). 



57. First abdominal tergite distinctly narrower at the apex than at the base; 



very rarely with the apex apparently as broad as base (alaskensis Ash- 

 mead), and then the abdomen exceedingly slender and strongly com- 

 pressed, with the second tergite very long-triangular 58. 



First abdominal tergite never narrower, usually distinctly broader, at apex 

 than at base 95. 



58. Face strongly rostriform, malar space long; ovipositor more than half as 



long as the abdomen 59. 



Face normal 60. 



59. Propodeum wholly impunctate and highly polished ; first and second ab- 



dominal tergites smooth and polished ; ovipositor sheaths at least as. 



long as the abdomen 58. cockercUi, new species. 



Propodeum and the two basal abdominal tergites distinctly punctate; 



ovipositor sheaths hardly two-thirds as long as the abdomen 



59. dukotae, new species.. 



60. At least the face, the prosternum and mesosternuni, and the entire venter 



of the abdomen honey-yellow 61. 



Face and prosternum and mesosternum black 62. 



61. Entirely honey-yellow, except the head above and behind black; ovipositor 



sheaths almost as long as the abdomen ; female antennae black, with a 



striking white ainiulus near the middle 60. annuHcornis (Ashmead). 



Dorsum of thorax and abdomen dark brownish-black 



61. hrunneuH (Ashmead). 



62. First and second abdominal tergites entirely smooth, impunctate and 



highly polished; first tergite very slender, strongly narrowed to the 

 apex ; the second triangular and very narrow at base ; hind femora yel- 

 lowish or yellowish-brown ; ovipositor sheaths hardly visible ^88. 



First and second abdominal tergites at least somewhat roughened at the 

 sides or posteriorly; rarely entirely smooth, and then not combining the 

 above characters 63. 



63. Tegulae and hind femora testaceous or reddish-testaceous; wings very 



often more or less fuliginous or yellowish 64. 



Tegulae dark brown or black; rarely transparent-whitish, and then the 

 hind femora entirely black ; wings usually hyaline ; posterior coxae and 

 the dorsum of the abdomen always black 75.. 



64. Propodeum with a sharp median longitudinal carina from base to apex__65. 

 Propodeum without a distinct median longitudinal carina from base ta 



apex, at most with a broad shining median longitudinal elevation ex- 

 tending to the base 72. 



65. Propodeum perfectly smooth, except for the strong median longitudinal 



carina, highly polished ; ovipositor sheaths at least as long as the abdo- 

 men ; hind coxae black; wings hyaline 62. sesiae Viereck. 



Propodeum more or less roughened, never polished ; ovipositor sheaths not 

 as long as the abdomen ; hind coxae usually testaceous ; wings more or 

 less fuliginous or somewhat yellowish 66. 



66. Second abdominal tergite very short and broad, much more than twice as- 



broad at apex as long 67. 



Second abdominal tergite rather triangular, never twice as broad at apex 

 as long; ovipositor sheaths never quite half as long as the abdomen 68. 



