214 U. S. NATIONAL MUSEUM BULLETIN 216 



fuscoferruginous on its apical 0.6, darkest near the apex; hind tarsus 

 whitish, the apex of each segment brown. 



Female: Black. Face blackish brown, its upper margin stramine- 

 ous; narrow frontal orbits on lower half of frons stramineous; small 

 triangle at top of eye pale yellow; lower margin of clypeus broadly, 

 more or less of cheek, mouth parts, and under side of scape, stramin- 

 eous; long hind corner of pronotum yellowish tinged with fulvous; 

 lower part of pronotum fulvous; tegula and subtegular ridge pale 

 yellow; scutellum and postscutellum obscurely ferruginous, each with 

 a narrow transverse yellowish mark at apex; front and middle legs 

 fulvous, their tibiae basally and tarsi paler; hind coxa, trochanters, 

 and femur fulvous; hind tibia dusky fulvous, darker on basal 0.2 and 

 dorsally, its second 0.2 ± whitish; hind tarsus stramineous, the apex 

 of each segment light brown. 



This species is close to the European Exochus semilividus Vollen- 

 hoven, 1875, and has considerable resemblance to the Nearctic E. 

 washingtonensis, in the pullatus group. 



Specimens (17 d 1 , 169): From Alberta (Edmonton); Arizona (near 

 Alpine); British Columbia (Oliver); Colorado (near Estes Park); 

 Connecticut (Green Falls and Stamford) ; Maryland (Takoma Park) ; 

 Massachusetts (Franklin); Michigan (Kalkaska Co.); Minnesota 

 (Itasca State Park and Ramsey County); New Brunswick (Poke- 

 mouche) ; New Jersey (Lahaway in Ocean Co. and Westfield) ; New 

 York (Cold Spring Harbor, Hancock, and Sea Cliff) ; North Carolina 

 (Hamrick and Mount Pisgah at 4,600 ft.); Ontario (Constance and 

 Mer Bleue (near Ottawa)); Pennsylvania (DuPont, Harrisburg, near 

 Webster Mills, and Westmoreland Co.) ; Quebec (Kazubazua and 

 Knowlton) , Rhode Island (Charlestown and Kingston) ; Virginia 

 (Summit of Butte Mt. in Giles Co.); Washington (Ashford); West 

 Virginia (Cheat Mt. at 2,000 ft.); and Wisconsin (Madison). 



Collecting dates are distributed from late May to September. 

 Some early and late seasonal records are: May 25 near Alpine, Ariz.; 

 May 26 at Franklin, Mass.; May 30 at Westfield, N. J.; June 6 at 

 Constance, Ont.; September 2 on Mount Pisgah, N. C, at 4,600 ft.; 

 September 18 at Mer Bleue (near Ottawa), Out.; and "Sept." in 

 Itasca Park, Minn. 



This species is transcontinental in the Transition zone. 



22. Exochus evetriae Rohwer 



Figures 189,i; 193, c 



Exochus evetriae Rohwer, 1920, Proc. U. S. Nat. Mus., vol. 57, p. 223; ? . Type: 

 ? , Butte Falls, Oreg. (Washington). 



Front wing 3.7 to 6.8 mm. long; combined face and clypeus about 

 0.98 as high as wide, rather weakly convex, flattened medially; facial 



