446 PROCEEDINGS OF THE ACADEMY OF [April, 



.greatest width of pronotum 4.2-5; length of tegmen 3.5; greatest 

 width of tegmen 2.5-3.2. 



Distribution. — The material before us proves that this species 

 has the most extensive range of any form of the genus found in North 

 America. The localities represented extend from Massachusetts 

 (Wellesley), northern Indiana (Lake and Kosciusko Counties), northern 

 Illinois, Iowa and eastern Colorado, south to northern Florida (Fernan- 

 dina), Alabama (Auburn), and western Arkansas (Men a). Its vertical 

 range extends from sea-level to twenty-five hundred feet elevation 

 (Sulphur Springs). The zonal distribution of the species appears to be 

 Upper and Lower Austral, slightly, and probably more extensively, 

 encroaching on the Transition region. The dates represented are all 

 in the months of May, June and July. 



Remarks. — It is most remarkable that this species should have been 

 sso generally overlooked, but few authors having reported it when it 

 is the most generally distributed of any single form of the genus in 

 our region. Its great superficial resemblance to /. uhleriana has no 

 doubt caused, its confusion with that species, but the shape of the 

 .supra-anal plate will readily distinguish the males of the two. The 

 female is distinctly smaller and with usually more rounded tegmina 

 than the same sex of uhleriana, but otherwise is much the same. 



There is considerable individual variation in size in the male sex 

 rand probably equally as much in the female, but the size of the series 

 of the latter sex is not sufficient to determine this. 



Specimens examined. — Eighty-seven; seventy-seven males, ten 

 females : 



Wellesley, Mass. One female. (Morse Collection.) 

 Waterbury, Conn. One male. (A. N. S. P.) 

 Peermont, N. J. One male. (A. N. S. P.) 

 New Jersey. One male, one female. (Brunei- Collection.) 

 Harrisburg, Pa. One male. (Penna. State Div. of Zool.) 

 McConnellsburg, Pa. One female. (A. N. S. P.) 

 Ashebourne, Pa. One male. (A. N. S. P.) 

 Mt. Any, Pa. One male. (Hebard Collection.) 

 District of Columbia. One male. (Bruner Collection.) 

 Boykins, Va. One male. (A. N. S. P.) 

 Virginia. One male, two females. (Bruner Collection.) 

 Sulphur Springs, N. C. Forty-one males. (Hebard Collection.) 

 Tryon, N. C. Six males. (U. S. N. M.) 

 Lillington, N. C. One female. (Hebard Collection.) 

 Femandina, Fla. Two males. (A. N. S. P. and Georgia State 

 Entom. Coll.) 



