146 NORTH AMERICAN BLATTIDAE 



nut brown, shading to russet meso-proximad. Pronotum solid 

 blackish chestnut brown, except lateral margins, which are sharply 

 defined in antimony yellow. Tegmina translucent blackish chest- 

 nut brown, with marginal fields sharply defined in warm buff. 



Many of the young of this species before us are uniform blackish 

 chestnut brown, occasional specimens are paler brown, while in the 

 series from Thomasville, Georgia, the lateral margins of pronotum, 

 mesonotum and metanotum are strikingly pale buffy. This is 

 shown to a lesser degree in one from Natchez, Mississippi, and 

 weakly on the pronotum in a number of immature eastern examples. 



We find that the ootheca is carried with suture directed either 

 dorsad or laterad. Females before us with ootheca in the former 

 position are from Montreal, Quebec, and Steuben County, Indi- 

 ana: in the latter position from Jamesburg, New York; Harris- 

 burg, Pennsylvania, and Natchez, Mississippi. The ootheca has 

 its sides rather strongly convex as in divisa, with surface smooth 

 and serrations of suture slightly lower and wider than in that 

 species. It averages decidedly longer than in any other species of 

 the genus except /ato (Harrisburg, Pennsylvania, 10.2 by 4.2 mm.). 



The present species has the widest distribution of any of the 

 genus in the United States, covering more than the eastern half of 

 this country and extending into southern Canada. Its northern- 

 most known limits are Scarboro, Maine; Abbotsford and Mon- 

 treal, Quebec; Sudbury, Ontario; Saginaw Bay, Michigan and the 

 south shore of Lake Superior, and Polk County, Wisconsin. The 

 westernmost records are Valentine, Nebraska; Clearwater, Kan- 

 sas, and Byers, Waco and Brownsville, Texas. Southeastward 

 the species is not as yet known beyond Raleigh, North Carolina; 

 Spartanburg, South Carolina, and Thomasville, Georgia. 



Specimens Examined: 199; 75 males, 77 females and 47 immature individuals. 



Montreal, Qtiebec, (Caulfield), l c?, i 9 with ootheca, [M. C. Z.]. 



Prout's Neck, Maine, 3 9, [M. C. Z.]. 



Winthrop, Massachusetts, (Mrs. H. E. Scudder), i ^, [M. C. Z.]. 



Staten Island, New York, VI, (W. T. Davis,) i a\ [Hebard Cln.]; i 9, [Davis 

 On.]. 



Jamesburg, New Jersey, VI, 22, , (W. T. Davis), i 9 with ootheca, [Davis 

 Cln.]. 



