PLECOPTERA OF NORTH AMERICA 159 



reaches to the cord or very nearly so ; eight or more costal 

 crossveins before the end of subcosta and several beyond ; 

 radial sector usually with three branches ; hind wing with 

 a large anal field and with several cubital crossveins. 



Abdomen yellowish ; cerci yellowish at base, inf uscated 

 towards the tip ; the middle segment 4-5 times as long as 

 wide. 



Male. Ninth abdominal sternite produced and rounded 

 behind; tenth tergite entire, produced backward into a 

 broadly rounded lobe ; subanal lobes modified into slender, 

 finger-like, upturned processes which bear on the anterior 

 side, near the tip, a small tooth. 



Female. Hind margin of eighth abdominal sternite 

 somewhat produced into a truncate subgenital plate which 

 is notched in the middle and beset with long hairs. 



Distribution. — Type, male, No. 253, Washington, in the 

 Hagen Collection, Mus. Comp. Zool., Cambridge, Mass. 



Vermont, Dummerston, July 14, 1908 (C. W. 

 Johnson) . 



Massachusetts, Swansea, July 12, N. S. Easton; 

 So. Framingham (C. A. Frost). 



Connecticut, Middletown, June 17, 1909 (C. W. 

 Johnson). 



New Jersey, Jamesburg, July 2. 



Maryland, Plummer's Island, May 18, 1915 (A. H. 

 Pottinger) . 



Virginia, Dixie Landing, May 25. 



West Virginia, Youghiogheny River, Cransville, 

 July 22, 1914 (R. P..Currie). 



Pennsylyania, Harrisburg, July 7, 1919; Allegh. 

 Co., June 11, 1899 (E. B. Williamson) ; Presi- 

 dent, July 3-4, 1922 (J. B. Palmer) ; West- 

 chester Co. (J. C. Bradley). 



New York, Ithaca, May 15-August ; Youngstown, 

 July 20 (C. P. Alexander). 



North Carolina, Raleigh, July 20, 1907; Southern 

 Pines, Apr. 28 (A. H. Manee). 



Georgia, Blackshear, May 10, 1911 (J. C. Bradley). 



Texas. 



Wisconsin, Milwaukee Co. 



Indiana. Elkhart, June 18, 1902 (Weith). 



Michigan, Ann Arbor, July 1-11. 



Minnesota, Ramsey Co., Univ. Farm, Minneapolis, 

 July 10, 1921 (W. E. Hoffman) ; St. Paul, June 

 25-29, 1921 (W. E. Hoffman). 



