1914.] NATURAL SCIENCES OF PHILADELPHIA. 477 



On those areas where the dominant soil is a loam, as in the "marl- 

 belt" and the Sassafras loam district, the Orthoptera have a pro- 

 nounced mesophilous aspect, the fauna closely resembling that of 

 the Piedmont Region. This faunule is dominated by Melanoplus 

 femur-rubnon, with which are usually associated Dissesteira Carolina, 

 Melanoplus femoratus, Arphia xanthoptera, Orphulella pelidna, 

 Dichromorpha viridis, Chortophaga viridifasciata, Encoptolophus sordi- 

 dus and Orchelimum vulgare. 



IV (rf). The Cape May District. 



This, according to Stone, includes the Cape May Peninsula south 

 of the Great Cedar Swamp. Floristically, the district is charac- 

 terized by the presence of a considerable number of Lower Austral 

 types which do not extend north of the district. In the Orthopteran 

 fauna this distinction is not so pronounced, the only species which 

 are peculiar to the region or extend but a short distance beyond it 

 being Mermiria vigilans and Conocephalus fuscostriatus. Negatively, 

 the district is characterized by the absence or relative scarcity of 

 certain Middle District and Pine Barren species. Of Middle District 

 species the following are as yet unknown from the Cape May Penin- 

 sula: Dichromorpha viridis, Encoptolophus sordidus, Melanoplus 

 differ entialis and Atlanticus dorsalis; Orphidella speciosa and Steno- 

 bothrus curtipennis occur, but are local and usually quite rare. 



Of typical Pine Barren species there appear to be no records of the 

 existence of the following species in the Cape May Peninsula, though 

 some of them may occur as far south as the southern edge of the 

 Great Cedar Swamp, as at Sea Isle Junction, where I have taken 

 several species which I have not been able to find elsewhere in the 

 Peninsula : 



Spharagemon ivyomingianum Melanoplus punctulatus 



Dendrotettix quercus Paroxya scudderi^^ 



Melanoplus impudicus Orchelimum eryihrocep>halum'^^ 

 " tribulus^^ " pulchellum^^ 



" fasciatus^^ " minor^^ 



" stonei Atlanticus dorsalis 



I have never been able to find Hesperotettix brevipennis south of 

 the Great Cedar Swamp, but there is a single female in the Academy 

 collection taken by John B. Smith at "Anglesea." 



The following list includes all the species of Acrididae (exclusive 



^* Taken at Sea Isle Junction. 



