114 U. S. NATIONAL MUSEUM BULLETIN 216 



Black. Antenna brown above, pale brown beneath, stramineous 

 beneath basally; apical part of mandible ferruginous; palpi stramin- 

 eous; tegula pale yellow; legs fulvous, the tibiae basally and the tarsi 

 usually a little paler than the rest of the legs. 



Specimens from west of the 100th meridian tend to have the legs a 

 little darker fulvous and the costula averaging a little stronger than 

 in specimens from east of that meridian. 



The type of Exochus emarginalus Say is destroyed. Its original 

 description fits perfectly members of the present species lacking the 

 areolet. It fits also other species of Triclistus with similar coloration 

 and lacking the areolet, but since this species is the commonest in 

 the type locality, the name is applied here. The lectotype of E. 

 fulvipes Cresson is peculiar in that the propodeum is entirely without 

 carinae basad of the apical transverse carina, but agrees in other re- 

 spects with the present species; it is believed to be an abnormal 

 individual. 



Specimens (413 cf, 2489) : from Alabama (Coleta, Langdale, Mobile, 

 and Pyriton); Alberta (Edmonton); British Columbia (Steelhead); 

 California (Camino and Chico) ; Colorado (near Estes Park) ; Connect- 

 icut (Canterbury, Lebanon, North Stonington, and Wallingford) ; 

 Florida; Kansas (Baldwin City and Lawrence) ; Kentucky (Lexington) ; 

 Maine (Capons and Lincoln Co.); Manitoba (Birch River and Riding 

 Mt. Park); Maryland (Bowie, Cabin John, Glen Echo, Plummers 

 Island, Roland Park, Silver Spring, and Takoma Park); Massa- 

 chusetts (Auburndale, Holliston, Milton, Petersham, Rockport, South 

 Hadley, and Woods Hole); Michigan (Bay Co., Calhoun Co., Cass 

 Co., Clare Co., East Lansing, George Reserve in Livingston Co., 

 Grand Traverse Co., Iosco Co., Isabella Co., Kent Co., Macomb Co., 

 Manistee Co., Midland Co., Missaukee Co., Muskegon Co., Oakland 

 Co., Oceana Co., Osceola Co., Saginaw Co., and St. Clair Co.); Missouri 

 (Kirwood); Minnesota (Newport, Ramsey Co., and Virginia); New 

 Hampshire (Concord and Pinkham Notch); New Jersey (Essex Co., 

 Moorestown, New Brunswick, Riverton, and Summit); New Mexico 

 (Jemez Springs at 6,400 ft.) ; New York (Aurora, Babylon, Barrytown, 

 Bemus Point, Big Indian Valley in the Catskill Mts., Canton, Canajo- 

 harie, Corning, Cranberry Lake, East Aurora, Ellis Hollow, Farming- 

 dale, Ithaca, Lake Sebago in Bear Mt. Park, Lancaster, McLean Re- 

 serve in Tompkins Co., North Evans, Orient, Poughkeepsie, Sea Cliff, 

 Shokan, Syracuse, Troy, Van Courtland Park, and West Nyack); 

 North Carolina (Clingman's Dome at 6,600 ft., Crabtree Meadows in 

 Yancey Co. at 3,600 ft., Craggy Gardens in Buncombe Co. at 5,300 

 ft., Forney Ridge on Andrews Bald in Great Smoky Mountains Na- 

 tional Park, Hamrick, Highlands, Marshall, Mount Mitchell, Mount 

 Pisgah at 5,000 to 5,749 ft., Rocky Mount, Southern Pines, Tryon, and 



