1916.] NATURAL SCIENCES OF PHILADELPHIA. 87 



STUDIES IN THE DERMAPTERA AND ORTHOPTERA OF THE COASTAL PLAIN 

 AND PIEDMONT REGION OF THE SOUTHEASTERN UNITED STATES. 



BY JAMES A. G. REHN AND MORGAN HEBARD. 



In the summers of 1911 and 1913, the present authors made 

 extensive collections of, and field studies in, the Dermaptera and 

 Orthoptera found in the southeastern States. About the time we 

 were able to begin laboratory work on the first season's collecting, 

 other series from the same general region were placed in our hands, 

 since which time an increasing amount of data has become available 

 bearing on the same subject. We feel the most advisable method 

 of making available to workers the really great amount of distribu- 

 tional, synonymic and variational information now in hand, to be 

 the publication of this single large paper. The authors' time has 

 been given more or less regularly for a period of two years to the 

 preparation of this paper and others made necessary by collections 

 referred to herein. It should be borne in mind that the present paper 

 is not a final one, but instead a contribution based on available 

 material, although nearly all of the species known from the regions 

 studied are treated. 



In general, the geographic area covered by the collections here 

 studied is, the Coastal Plain and Piedmont regions from the Potomac 

 River south to north-central (non-peninsular) Florida, west to the 

 western boundary of Georgia. In addition a fair amount of material 

 from the higher elevations in Georgia, from certain localities in 

 central Florida and also from Maryland and other more northern 

 States has been included. Aside from the Georgia mountain region 

 records, which are geographically very important, those from outside 

 the main area covered by the paper have been included to place 

 on record the extreme geographic limits of certain species, or to cite 

 material used in the detailed discussion on the species. 



In the study of certain genera here treated we have found it not 

 only desirable, but necessary, to revise completely those groups as 

 found within North America, in the course of which work practically 

 all the available collections bearing on the subjects have been 

 examined. These revisions consumed much time and involved some 

 travel. The collections of the United States National Museum, the 

 Museum of Comparative Zoology and the Georgia State Collection 



