A preliminary list of the Hemiptera of Western Pennsylvania

The enumeration of insects, even in merely preliminary lists, is of importance, because such lists assist in filling gaps in our knowledge of the uneven geographical distribution of genera and species.A list of the hemiptera found in the vicinity of Buffalo, N. Y. , was published by Mr. E. P. VanDuzee in the year 1894.In the year 1S99 Professor J. B. Smith published a list of the species known to occur in New Jersey.Nearer home we find another, but older, list of the hemiptera of Lancaster County, Pennsylvania, prepared by S. S. Rathvon, and published in 1869 in Mombert's History of that county.This list records a large number of hemiptera, but, unfortunately contains many useless manuscript names.The region west of Pittsburg is represented in the literature of this subject by a list of the hemiptera of Ohio published by Professor H. Osborn in 1900, and by lists of the hemiptera of Iowa published by the same authority at earlier dates.A list of the hemiptera of Colorado was published by Gillette and Baker in 1896.Annals of thr Carnegie Museum.Penn Station (elevation 974 ft.), one mile west of Jeannette and located on Brush Creek, is surrounded by many hills.Patton is on the eastern sloi)e of the Allegheny Mountains.Collections were made at this point at the " Beaver Dams," in meadows, and in open forests of pine and spruce.Portage is situated on the summit of the Alleghany Mountains.Collections were made here in oj^en woods.Patton and Portage are both in Cambria County, Pennsylvania.Wilmerding, on Brush Creek, is located in Allegheny County, and