360 PROCEEDINGS OF THE NATIONAL MUSEUM voi>. in 



of the radial vein plus the elongate head will separate this subspecies 

 from the other two. 



Description. — Male : 



Head: Wider than long, 1.35(1.23-1.40) : 1.04(0.96-1.10) ; anteocular 

 length sHghtly more than half of anteocular width, 0.52(0.46-0.54): 

 0.87(0.83-0.96); juga very widely reflexed (fig. 19), margins thickened, 

 virtually unpunctate. Antennal segments: I, 0.29(0.29-0.30); II, 

 0.48(0.38-0.53); III, 0.69(0.60-0.80); IV, 0.85(0.70-0.96); V, 0.98 

 (0.90-1.06). Labial segments: I, 0.39(0.36-0.42); II, 0.67(0.63-0.70); 

 III, 0.62(0.56-0.66); IV, 0.43(0.40-0.46). 



Pronotum: Width more than twice length, 2.85(2.55-3.00) : 1.28 

 (1.17-1.36). 



Scutellum: Longer than wide, 2.14(1.95-2.21): 1.81(1.56-1.89). 



Length of body: 5.42(4.72-5.70). 



Female: Similar to male but somewhat larger and stouter. 



Head: Wider than long, 1.42(1.33-1.51) : 1.14(1.10-1.23); anteoc- 

 ular length more than half of anteocular width, 0.55(0.50-0.60) : 

 1.00(0.96-1.06). Antennal segments: I, 0.29(0.26-0.33); II, 0.50(0.48- 

 0.53); III, 0.63(0.60-0.70); IV, 0.82(0.76-0.88); V, 0.96(0.88- 

 1.03). Labial segments: I, 0.39(0.36-0.43); II, 0.72(0.70-0.76); III, 

 0.65(0.53-0.70); IV, 0.50(0.47-0.53). 



Pronotum: Width-length ratio, 3.23(2.93-3.52) : 1.50(1.43-1.56). 



Scutellum: Length-width ratio, 2.50(2.21-2.66) : 2.05(1.82-2.28). 



Length of body: 6.13(5.70-6.45). 



Type data.— Two records were given in Dallas' original descrip- 

 tion, "St. John's Bluff, E. Florida. Presented by E. Doubleday, 

 Esq." and "N. America. From Lieut. Redman's collection." Per- 

 sonal study of the Dallas material (BrM) found only the Florida 

 specimen to be present. As one would expect from the locality, this 

 specimen lacks the apical pale spot on the corium and is S. cinctus 

 cinctus. So, in order not to violate Dallas' obvious intent to have this 

 taxon represent a spotted form (both in the description and the name 

 albonotatus), it becomes necessary to assume that the missing specimen 

 had the spot and to designate it as the Icctotype. 



Specimens studied. — 82 males, 81 females. 



Canada: Alberta: Peace River. Manitoba: Cedar Lake, Deepdale; July- 

 August. A''ew:>/oMra(//a/u/; Nicholsville; July. On/a/-io; Port Sidney; July. Quebec: 

 Granby, Mattapedia; July-August. 



United States: California: Meadow Valley (Plumas Co.); June. Colorado: 

 Boulder. Illinois: Algonquin, Waukon; June- August. Iowa: Ames, Boone, 

 Eldora, Little Rock; June- August. Maine: Bar Harbor, Eastport, Kingfield, 

 Lovell, Monmouth, Orono, Weld, Westport; April-September. Massachusetts: 

 Boston, Humarock, Salem; July. Michigan: Cheboygan Co., Chippewa Co., 

 Douglas Lake, Emmet Co.; May- August. Minnesota: Pequot Lakes, Traverse 

 Co.; September. Montana: Gallatin Co.; May. New Hampshire: Bretton Woods, 



