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weed (Eupatorium purpureum) , boneset (Eupatorium perfoliatum) and a 

 bewildering variety of members of the sunflower tribe (Helianthus, Bidens, 

 etc.). Where this thicket is sufficiently open there frequently occur patches 

 of wild rye (Elymus virginicus, E. canadensis) . 



The central portion of these swamps dominated by Homalocenchrus ap- 

 peared to be characterized by a rather different assemblage of Orthoptera 

 than that typical of the surrounding thickets, though, owing to the usually 

 restricted size of the swamps, it was not possible in all instances to clearly 

 distinguished the two groups. In general, however, the Homalocenchrus 

 areas appeared to be characterized by such Orthoptera as Orchelimum 

 nigrip.es, Neoeonocephaliis palustris, Stauroderus curtipennis, Conocephalus 

 attenuaius and Paroxya hoosieri. The surrounding thickets were especially 

 characterized by the short-winged Melanopli, such as Melanopliis obovati- 

 pennis, ill. scudderi, M. gracilis and M. viridipes, together with numerous 

 examples of Melanopliis differentialis, Conocephalus nigropleurum and 

 Conocephalus memoralis. Two forms that appeared to occur indifferently 

 in both zones were Orchelimum vulgare and Conocephalus brevipennis (incl. 

 ensiformis). 



Relative Frequency of the Species. 

 As regards numbers the most abundant grasshopper in this region is 

 Melanopliis fern ur-rubr um which appears to swarm everywhere on both 

 upland and lowland, though it appeared to be less frequent in wooded 

 areas than in more open situations. Next to it in point of numbers I 

 would place Melanopliis atlanis which is common, but more local than 

 femur-rubrum. Other species which appeared to be present in what 

 may be regarded as abundance were Encoptolophus sordidus, Dissosteira 

 Carolina, Melanopliis differentialis, .Orchelimmn vulgare, Conocephalus 

 strictus and Nemobius fasiatus. Much less frequent, but on the whole 

 rather common were such species as Syrbula admirabilis, Arphia xanthop- 

 tera, Chorlophaga viridifasciata, and Melanopliis femoratus. Some species 

 appeared to be of frequent or regular occurrence locally wherever the spe- 

 cial conditions making up their normal environment prevailed. Tims 

 Hpharagemon bolli and Mclanoplus scudderi and luridus occurred, usually in 

 considerable numbers, wherever there were dry open woodlands, while in 

 the swamps, or their borders, three species, Mclanoplus differentialis, Or- 

 chelimum uigripes and Conocephalus brevipennis were in all but one or 

 two instances abundant. Associated with the last three were frequently 



