1915.] NATURAL SCIENCES OF PHILADELPHIA. 321 



sides; below the ventro-lateral margins of this portion on each side, 

 rests a somewhat more thickened, narrow, corneous plate which is 

 exteriorly nearly horizontal at the base, but produced and upcurved 

 with blunt apex reaching a little distad of the apex of the dorsal 

 portion, inside at the juncture with the dorsal portion this ventro- 

 lateral portion is strongly concave thus forming claw-like projections 

 which hold in the seminal sac without pressing upon it at any point. 

 (See Plate IV, figs. 11 and 12.) 



The species has been accidentally introduced by man from Europe 

 and is now widely distributed through temperate North America. 

 It has in the past been recorded from Montreal, Quebec; Connecti- 

 cut; New York, New York; New Brunswick, New Jersey; Ohio; 

 Lexington, Kentucky; West Terre Haute, Indianapolis and Putnam 

 County, Indiana; Moline and Urbana, Illinois; Minnesota, and 

 Omaha, Nebraska. 



The insect inhabits dwellings, greenhouses, etc., where it is some- 

 times found in large numbers. The species is decidedly more alert 

 and active than assimiUs, in its movements more nearly resembling 

 the extremely rapid Gryllodes sigillatus, which tropical species also 

 appears to prefer the proximity of man. 



The series recorded below are in general coloration yellowish brown, 

 the specimens from Chicago, Illinois, and Albany, Georgia, are 

 .slightly darker than normal with caudal femora weakly suffused. 



Specimens Examined: 27; 7 males, 14 females, 2 immature males 

 and 4 immature females. 



West Farms, New York, 1 9 , [U. S. N. M.]. 



Harrisburg, Pennsylvania, XI, 18, 1 juv. d^, [Pa. State Dept. 

 Zool.j. 



Philadelphia, Pa., IX, 30, 1914, (E. R. Casev; on Logan Square), 

 1 9 , [Casev Cm.]. 



West Philadelphia, Pa., IX, 14 and 16, 1901, (W. Stone; in house), 

 .3 6^,2 9,3 juv. 9, [A. N. S. P.]. 



Carolina, 1 9 , [U. S. N. M.l. 



Roswell, Georgia, (King), 1 d^, [U. S. N. M.]. 



Albany, Ga., VIII, 1, 1913, (H.; under sign on oak tree), 1 juv. 9 . 



Thomasville, Ga., IV, 1901, (H.; in house on lamp shade at night), 

 19. 



Utaw, Alabama, 2 9 , [U. S. N. M.]. 



Chicago, Illinois, (W. J. Baumgartner; in greenhouse), 1 cf, 1 9, 

 ■[A. N. S. P.]. 



St. Anthony Park, Minnesota, IX, 9, 1896, (0. Lugger), 1 9, 

 [Hebard Cln.]. 



Lincoln, Nebraska, 1 9 ; V, 18, 1901, (M. Gary; at light), 1 9, 

 [both Hebard Cln.]. 

 21 



