476 PROCEEDINGS OF THE ACADEMY OF fJune, 



mon in the upper portions of the district, though, on the whole, 

 considerably less frequent than in the Piedmont Region. Orphulella 

 speciosa has been taken in the Middle District, but appears to be 

 exceedingly scarce, in marked contrast to its abundance on the west 

 shores of the Delaware. During four seasons' collecting I took only 

 two specimens. The Piedmont component of the fauna gradually 

 thins out as one goes southward. Encoptolophus sordidus I have not 

 taken south of Laurel Springs, Camden County, while the southern 

 limits of Dichromorpha viridis are, according to my observations, in 

 the vicinity of Bridgeton, Cumberland County. Stenohothrus 

 curtipennis extends into the Cape May Peninsula, but is there of 

 very local occurrence. 



The most abundant grasshopper is Melanoplus femur-ruhrum. 

 Other forms which appear to be of common occurrence are Orphu- 

 lella pelidna, Melanoplus atlanis, Dissosteira Carolina, Chortophaga 

 viridifasciata, Arphia xanthoptera, Orchelimum vidgare, Melanoplus 

 femoratus, Psinidia fenestralis, Xiphidium fasciatum, Xiphidium 

 strictiwi, Paroxya floridiana, Melanoplus differentialis (locally on the 

 Delaware below Gloucester), Encoptolophus sordidus (in the northern 

 half only), Xiphidium hrevipenne, and Arphia sulphurea. Somewhat 

 less frequent, but of not uncommon occurrence, are Syrbula admira- 

 hilis, Melanoplus scudderi, Scudderia texensis, curvicauda and furcata, 

 Conocephalus robustus, C. triops, Spharagemon bolli, Hippiscus 

 rugosus, Dichromorpha viridis (northern section only) and Steno- 

 bothrus curtipennis (frequent, but somewhat local, in northern 

 section, exceptional in southern section). The remaining species 

 are either rare or, if frequent, only under exceptional circumstances. 



Locally, where there are considerable areas of nearly pure sand of 

 moderately high elevation, conditions prevail closely resembling those 

 of the Pine Barrens. An isolated patch of this kind occurs just west 

 of Jericho, Cumberland County (shown in pink on the map accom- 

 panying the State report on insects). In such places the Orthoptera 

 have a strong Pine Barren aspect. The prevailing species are 

 Scirtetica marmorata, Melanoplus luridus, Psinidia fenestralis, Sphar- 

 agemon bolli, Spharagemon wyomingiana, Orphidella pelidna, Arphia 

 sulphurea, Hippiscus phoenicopterus and Schistocerca rubiginosa. 

 With these arc other species, such as Dissosteira Carolina, Melanoplus 

 atlanis, Arphia xanthoptera, Chortophaga viridifasciata, Schistocerca 

 dnmnifica, Melanoplus scudderi, M. femoratus, M. femur-rubrum (a 

 minor constituent of this association), Syrbula admirabiUs, Scudderia 

 curvicauda and furcata and Xiphidium brevipenne. 



