54 John F. Pagels, Carol S. Jones, Charles O. Handley, Jr. 



(USNM). Buckingham Co.: Virginia Primary Highway (PH) 15 at north bank 

 of Willis River (2 mi NE Sheppards), 1 (VCU). Charles City Co.: PH 5, 0.25 mi 

 E PH 156 (2 mi SE Shirley), 1 (VCU). Chesterfield Co.: US 360, 2 mi W Swift 

 Creek (4 mi E Skinquarter), 1 (VCU). Chesterfield- Powhatan cos. boundary: 

 Keswick Farm, 4 mi N Midlothian, 1 (USNM). Culpeper Co.: Lignum, 10 mi 

 SE Culpeper, 1 (USNM). Cumberland Co.: US 60, 5-6 mi W Cumberland Court 

 House (nr. Buckingham Co. line), 2 (VCU). Essex Co.: 3.5 mi SW Center Cross, 

 2 (USNM). Fairfax Co.: Falls Church, 2 (USNM); Springfield, 1 (USNM); 2 mi 

 NW Vienna, elev. 125 m (410 ft.), 1 (USNM); nr. Burke, 5.5 mi SSE Fairfax, 1 

 (USNM). Fauquier Co.: US 17, 4 mi SE Marshall, 1 (VCU). Hanover Co.: 1.5 

 mi S Montpelier, 1 (USNM). Henrico Co.: 1-2 mi E Varina, 3 (VCU). Mecklen- 

 burg Co.: 2 mi S, 1 mi E Clarksville, 3 (VCU); 3.5 mi N, 4 mi W Clarksville, 1 

 (VCU). New Kent Co.: 0.5 mi NE Bottoms Bridge, 1 (VCU). Page Co.: Shenan- 

 doah National Park, headquarters area, 4.7 mi ENE Luray, elev. 366 m (1200 

 ft.), 3 (USNM). Powhatan Co.: US 60 at east bank of Sallee Creek (4 mi WNW 

 Powhatan), 1 (VCU). Prince Edward Co.: no exact locality, 1 (USNM). Prince 

 George Co.: 3.4 mi W Disputanta, 1 (VCU). Prince William Co.: 4 mi SE 

 Manassas, 2 (USNM). Surry Co.: Pipsico Scout Reservation, nr. Scotland, 4 mi 

 NE Surry, 1 (USNM). Warren Co.: Browntown Rd. (SH 649), 3.5 mi SSW 

 Front Royal, elev. 305 m (1000 ft.), 1 (CM). 



Additional Virginia specimens, not seen: Arlington Co.: Little Pimmit Run, 

 2 mi SW Chain Bridge, 6 (Bray 1939). Brunswick Co.: Seward Forest, nr. Tri- 

 plett, 2 (Lewis 1943). Hanover Co.: nr. Ashland, 1 (NCSM). 



RESULTS AND DISCUSSION 



Distribution 



The 61 specimens were taken at 37 localities: 11 in the Coastal 

 Plain, 24 in the Piedmont, and 2 in the Ridge and Valley Province. 

 Elevation of captures ranged from near sealevel to 366 m (1200 ft.) and 

 averaged about 91 m (300 ft.). 



Not surprisingly, the localities cluster in two groups, around Rich- 

 mond, Virginia, and Washington, D. C, the home bases of active col- 

 lectors (Fig. 1). The localities are distributed about equidistant from the 

 Fall Line in both clusters. Thus, in the north, where Coastal Plain and 

 Piedmont are narrow, S. I. longirostris has been found throughout, 

 from coast to mountains, probably approximating the true extent of the 

 range of the species there. On the other hand, in southern Virginia, 

 where both Coastal Plain and Piedmont are wide, S. I. longirostris has 

 been found only in the upper Coastal Plain and lower Piedmont. We 

 suppose that this distribution is an artifact of collecting. 



In Maryland, S. longirostris probably occurs only in the Coastal 

 Plain in the southern sector of the Western Shore. It is absent from the 

 Eastern Shore, the northern sector of the Western Shore, and the entire 

 Piedmont and mountainous portions of the State. 



