652 PROCEEDINGS OF THE NATIONAL MUSEUM vol. in 



According to a letter from the late Dr. Myron Swenk to Dr. Sailer, 

 the type specimen of this species was accidently knocked from its 

 pin and lost while it was being incorporated in the collection of the 

 University of Nebraska. 



Specimens examined.— 59 males, 107 females. 



United States: Arizona: Oak Creek Canyon, Williams; July. California' 

 El Dorado Co., Los Angeles Co., Madera Co.; September. Colorado: No exact 

 locality. Georgia: Spalding Co.; March. Illinois: Algonquin, Aurora, Oakwood, 

 Urbana, White Heath; April to October. Indiana: Knox, Marion Co.; July. 

 Iowa: Ames, Boone Co., Iowa City, Lake Okoboji, Louisa Co., Moran, Wash- 

 ington; April to October. Kansas: Ashland, Lawrence; June, July. Kentucky: 

 McCraken Co.; September. Maryland: Cabin John; April. Massachusetts: 

 Cambridge, Natick; June. Michigan: Washtenaw Co.; May. Nebraska: West 

 Point; June. New Jersey: Bear Swamps, Hackettstown, Madison; May, July. 

 New Mexico: Las Vegas, Mesilla Park, West Point; May, July. New York: 

 Maspeth, Mosholu, West Hebron; May. North Carolina: Black Mts., Gray 

 Beard Mt.; May, September. Oregon: Corvallis, McMinnville; October. Penn- 

 sylvania: Ingram, Philadelphia; May, June, September. Tennessee: Hamilton 

 Co.; October. Texas: Denison; November. Virginia: Augusta Co., Chain 

 Bridge, Fairfax Co.; May, July, September. Washington: Puyallup; March. 



Canada: Ontario: Ridgeway; October. 



Discussion. — In most collections examined, this species has been 

 confused with spinifrons. The shorter labium, which here does not 

 exceed the posterior coxae, will separate the two ; or in the case of the 

 males, the absence of a midventral angulation on the anterior tibia 

 will mark it from spinifrons. 



Zimmer's description of his specimen as a female was the result of 

 confusion of the two sexes that was prevalent at that time. 



Although several authors have reported this form from light, 

 real ecological notes concerning it are quite few. Blatchley (1926) 

 and Torre Bueno (1939) repeated Stoner's (1920) record of sweeping it 

 from Antennaria plant aginifolia (L.) in Iowa. Parshley (1923, p. 780) 

 reported that it may be "occasionally found under stones and by 

 sifting." 



Amnestus pusillus Uhler 



Plate figures 63, 163, 164, 184, 295 



A7nnestus pusillus Uhler, 1876, p. 278; 1877, p. 371; 1886, p. 3.— Signoret, 1883, 

 p. 372, pi. 10, fig. 197.— Lethierry and Severin, 1893, p. 75.— Banks, 1910, 

 p. 98.— Van Duzee, 1917, p. 23.— Torre Bueno, 1939, p. 183. 



Diagnosis. — The male of pusillus may be easily recognized by the 

 presence on the hind femur of a ventral, subapical spine which is more 

 than one-third as long as the tibia (fig. 164). The female is also 

 strongly marked by the presence of a flattened, polished, glabrous 

 area on the middle of the last sternite (fig. 184) and the presence of a 

 short, oblique, subapical spine on the ventral margin of the posterior 



