128 BULLETIN 45, UNITED 8TATE8 NATIONAL MUSEUM. 



pale rufous. Mosoiiotuiii with a central impressed line. Pleura 

 sliiiiiii}?, but more or less aeieulated. Metatliorax rugose, very Hhort, 

 the posterior anj^les toothed. Teguhe dull rufous or i)ieeous. Wings 

 subfuseons, the venation pieeous, the stignial nervure long, slightly 

 curved, about three times as long as the linear marginal vein, and form- 

 ing almost a elosed marginal eell. Kegs, including coxa-, browidsh- 

 yellow. Abdomen stout, longer than the head and thorax united, 

 polislied black, with a slight striated elevation at base of the second 

 segment above. 



The (5 agrees with the 5 , except that the abdomen is shorter and 

 slightly pieeous at base, the antennae filiform, ll-jointed, the scape and 

 legs brownish-yellow, while the tlagellum is brown. The antenna' are 

 as long as the body, the scape as long as the first three flagellar joints 

 united ; i)edicel very small ; first flagellar joint slightly more than twice 

 as long as thick, a little stouter than the others, and subequal with 

 the last joint, the latter the longer joint; the three following joints are 

 subequal, the four following gradually become a little longer, the last 

 very slightly h)nger than the first. 



Habitat. — Virginia, Maryland, and District of Columbia. 



Types in Coll. Ashmead and National Museum. 



Described from many specimens. 



Ceraphron unicolor, sp. nov. 



9 . Length, 2 to li.l""". Wholly black, shining, the articulations of 

 the legs and the tarsi alone pale brown ; head and thorax faintly sculp- 

 tured ; face deeply impressed above the insertion of antenna*, with 

 a grooved line extending forward from the front ocellus ; eyes large, 

 pubescent. Antenn;e lO-jointed, slender, the scai)e long, obclavate, a 

 little longer than half the length of the flagellum ; first flagellar joint 

 longer than the pedicel, about four tinu's as long as thick, the second 

 two thirds the length of the first, the two fidlowing subequal, those be- 

 yond longer, at least 2^ times as long as thick, the last joint being the 

 longest, and longer than the first. Thorax with a central grooved line, 

 which is subobsolete anteriorly. Post-scutellum toothed. Metatliorax 

 very short, with the posterior angles acute. Wings subfuseons; the 

 stigmal vein long. Abdomen stout, highly polished, black, as long as 

 the head and thorax together, with a striate space at base. 



Habitat. — Cheyenne, Wyo., and Alta, Utah. 



Types in Coll. Ashmead. 



A single specimen of this species was taken by Schwarz in Utah, 

 and another by Wickhara in Wyoming. 



Ceraphron salicicola, sp. nov. 



9. Length, 0.0" '". Black, shining, feebly punctate; face emargi- 

 nate; anteniiiii <lark brown; ]»edicel yellow at apex, as long as the first 

 and second flagellar joints together; flagellum subclavate, the joints 



