H. C. FALL 477 



PijgiiHurn variable in color, the tip often paler; body beneath dark brown, 

 last ventral paler at sides; legs brownish yellow, the femora often with diffuse 

 darker rings, tibiae dusky apically. 



Length 1.9-3.4 mm.; width 1.5-1.9 mm. 



Distrihulion. — ^Melsheimer's type was from Pennsylvania. The following 

 localities are known to me or are reported on credible authority. New Hamp- 

 shire: Farmington. Massachusetts: Wakefield, July 18. Connecticut: (Leng 

 Coll.). Xew York: (Leng Coll.). Xew Jersey: Delaware Water Gap (Lie- 

 beck); Anglesea, July 5 (Wenzel). Georgia: (Liebeck), (Xat. Mus. Coll.); 

 Tybee Island, June 29 (Wenzel). Florida: (Liebeck Coll.); Cedar Keys, June 

 6 (Hubbard & Schwarz) ; Jacksonville (Van Dyke Coll.). Alabama: Oak Grove 

 July 21 (Loding). Louisiana: Xew Orleans, June 13 (Soltau Coll.). Ohio: 

 Cincinnati (Dury). Michigan: Detroit, Monroe, and Marquette, Aug. 1. 

 (Hubbard & Schwai'z). Wisconsin: Bayfield (Wickham). Canada: Mon- 

 treal, May 24 (Liebeck Coll.) ; Toronto (Crew) ; Scotia Junction, July 27 (Wen- 

 zel); Brandon, Manitoba (Wickham). Kansas: Salina (Knaus). Texas: 

 Luling; Columbus, 'Slay IS (Hubbard & Schwarz); Flatonia July 3C (Wenzel); 

 Brownsville, May 23 (H. S. Barber), (Schaeffer); "Tex" (Nat. Mus. & Snow 

 Colls.). Colorado: Gunnison (Baker) ; Ft. Collins, July 4 (Wickham) ; Colorado 

 Springs, June 15 (Wickham); Denver, Oct. 20 (Soltau); Lorimer Co. (Leng 

 Coll.); "Col" (Snow). Wyoming: Owl Creek, Aug. 29 (Currie— Nat. Mus. 

 Coll.). Utah: Salt Lake, June 13 (Hubbard & Schwarz). New Mexico: 

 Silver City (Dury); near Las Vegas Hot Springs (Snow); S. W. Truchas Peak 

 above timber line, Aug.- 4 (Cockerell). Arizona: Pearce, Maj^ 18 (Clemence); 

 Santa Rita Mountains, May 6 (Hubbard & Schwarz); Globe (Wickham); 

 Huachuca Mountains, July 4 (Wenzel); "Ari" (Morrison), (Liebeck). Cali- 

 Jornia: Santa Cruz, July 30; Monterey, July 12 (Schwarz); Tehachai^i (Wick- 

 ham); Los Angeles (Horn Coll.); Los Angeles Co. (Van Dyke), (Coquillett). 



The most widely distributed species in our fauna. It occurs 

 in almost every part of the United States and extends — I know 

 not how far — into Alexico. Specimens in the Nat. Mus. Coll. 

 labeled pinguis Suffr. Ijy Mr. Schwarz and doubtless correctly so, 

 are not different from some of our own which there seems to be no 

 reason to hold as distinct from hepaticus. Practically every 

 detail of structure, sculpture and color is more or less variable but 

 the larger material one has to work with, the more difficult it be- 

 comes to draw any lines that will serve to separate varieties or 

 races, and in only a single instance have I thought it worth while 

 to do so. In its unincrassate anterior femora and entire absence 

 of tibial spurs hepaticus agrees with microps alone among our 

 species, and these two may be regarded on this account as deserv- 

 ing of subgeneric separation, but scarcely more than that I think, 

 for these structm'os are not entirely constant elsewhere in the 

 genus. The antennae are excei)tionally short, nearly as in 



TRANS. A.M. E.NT. SOC, XLI. 



