372 U. S. NATIONAL MUSEUM BULLETIN 216 part 3 



This is very close to T. atroruhens and is likely to prove a sub- 

 species of it. It is usually easy to distinguish because the hmd femur 

 is usually ferruginous in rejiexa and always black in atroruhens. Most 

 specimens from Utah, Idaho, and Montana, however, have about the 

 same coloration as T. atroruhens, and may be distinguished only by 

 the strong vertical portion of the epomia and by the fact that the 

 temple is usually slightly concave. 



The strong and complete epomia, fuscous wings, lameUalilvC occipital 

 carina, and the concave or flat temple distinguish the species. 



Type: 9, Cammo, Calif., June 30, 1948, H., M., G., and D. Townes 

 (Washmgton, USNM 63813). 



Paratypes (157 cf, 489): From British Columbia (Lillooet, Oliver, 

 Osoyoos, Robson, and Victoria) ; California (Antioch, Arroyo Seco 

 Camp in Alonterey Co., Artois in Glenn Co., Ash Mt. in Sec^uoia 

 National Park, 8 miles west of Atascadero in San Luis Obispo Co., 

 Bass Lake m Madera Co., Ben Lomond in Santa Cruz Co., Berkeley, 

 Big Dalton Dam in Los Angeles Co., Bigpine Creek in Inyo Co. at 

 7,500 ft., Bolmas Beach, Bradley in Monterey Co., Brentwood in 

 Contra Costa Co., Camp Baldy in San Bernardino Co., Carmel, 

 Carrville in Trmity Co. at 2,400 to 2,500 ft., Chile Bar m El Dorado 

 Co., near Coalinga, Crystal Lake Road in Los Angles Co. at 4,700 ft., 

 Davis, Davis Creek in Modoc Co., Fallen Leaf Lake in El Dorado Co., 

 Fh-ebaugh in Fresno Co., Fish Camp, Fort Seward, Fruto in Glenn 

 Co., Gait in Sacramento Co., Glendale, Hallelujah Junction in Lassen 

 Co., Hastings Natural History Reserve near Jamesburg in Santa 

 Lucia Mts. in Monterey Co. at 1,900 to 2,700 ft., Hemet Reservoir 

 in San Jacinto Mts., Herkey Creek in San Jacmto Mts., Howland Flat 

 in Sierra Co., 6 miles south of Idria in San Benito Co., Idyllwild in 

 San Jacinto Mts., Kinocti Bay on Clear Lake, Kyburz in El Dorado 

 Co., Lake Forest near Lake Tahoe, Leland Meadow in Tuolumne Co., 

 Lone Pine in Inyo Co., Loomis, Los Gatos Canyon divide to Diablo 

 Range in Fresno Co., Mesa Grande in Sonoma Co., Miami Ranger 

 Station in Mariposa Co., Mill Valley, Mokelumne Hill, Mount 

 Diablo, Mount Hamilton in Santa Clara Co., Napa, Navarro River 

 in Mendocino Co., hills back of Oakland, Oakley in Contra Costa Co., 

 3 miles southwest of Orland in Glenn Co., Pacific Grove, Pinnacles 

 in San Benito Co., near Pmoche [=Panoche] in Fresno Co., 4 miles 

 west of Plantation in Sonoma Co., Poso Creek in Kern Co., 4 miles 

 west of Quincy in Plumas Co., Ramona Ranger Station in San Diego 

 Co., Redding, Round Valley in Inyo Co., Russelmann Park on Mount 

 Diablo, Sacramento, Samuel Springs in Napa Co., San Antonio Ranger 

 Station in Santa Clara Co., San Antonio Valley in Santa Clara Co., 

 San Francisco, San Luis Rey Camp in San Diego Co., Santa Cruz 

 Island, 6 miles northeast of Santa Margarita in San Luis Obispo Co., 



