128 BULLETIN 45, UNITED STATES NATIONAL MUSEUM. 



pale rufous. Mesonotuin with a central impressed Hue. Pleura 

 shining, but more or less aidculated. Metathorax rugose, very short, 

 the posterior angles toothed. Tegular dull rufous or piceous. Wings 

 subfuscous, the venation i)iceous, the stigmal nervure long, slightly 

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

 ing almost a closed marginal cell. Legs, including coxiie, browni.sh- 

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

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

 segment above. 



The $ agrees with the 2 , except that the abdomen is shorter and 

 slightly piceous at base, the antenna^, filiform, 11-jointed, the scape and 

 legs brownish-yellow, while the flagellum is brown. The antenna) are 

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

 united ; pedicel 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 longer 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 2.1™'". 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 antennje, with 

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

 pubescent. Antennae 10-jointed, slender, the scape long, obclavate, a 

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

 longer than the pedicel, about four times as long as thick, the second 

 two-thirds the length of the first, the two following 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. Metathorax 

 very short, with the posterior angles acute. Wings subfuscous; 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 Wickham in Wyoming. 



Ceraphron salicicola, sp. nov. 



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

 nate; antenna' dark brown; i)e(]icel yellow at apex, as long as the first 

 and second flagellar joints together; flagellum subclavate, the joints 



