FURTHER RESEARCHES ON NORTH AMERICAN ACRIDIID^. 13 



HABITS, HABITATS, AND LOCAL LISTS. 



As has been stated, the work of collecting began in northwest 

 Georgia, at a point visited toward the end of the first trip, in the hope 

 of securing early-maturing species not procurable at that time, partic- 

 ular attention being paid to the fauna of the Sand Mountain plateau, 

 at an elevation of i ,500 feet. Here the following species were secured 

 in the adult state : 



Nomotettix cristatus. Dissosteira Carolina. 



Neotettix femoratus. Spharagemon bolli. 



Tettix arenosus. Trimerotropis saxatilis. 



Tettigidea lateralis. Hesperotettix brevipennis. 



Syrbula admirabilis. Melanoplus atlanis. 



Eritettix carinatus. Melanoplus bivittatus femoratus. 



Orphulella pelidna. Melanoplus impudicus. 



Arphia sulphurea. Melanoplus strumosus. 

 Hippiscus phoenicopterus. 



Of these the only ones calling for particular mention are Melano- 

 plus strumosus , discovered in Florida on the first trip, whose presence 

 so far north was unexpected; and Trimerotropis saxatilis, notes on 

 whose habits will be found in the accompanying list of species (page 

 39; pi. i, fig. 2). At Trenton, on the floor of Lookout Valley, at an 

 elevation of about 735 feet, Schistocerca americana, Trimerotropis 

 citrina, and the young of Hippiscus rugosus were also secured. Here 

 also, thanks to information received from Mr. J. T. Woolbright, an 

 observing resident, a colony of Dictyophorus reticulatus, the great 

 southern "lubber grasshopper," was located far to the north of its 

 supposed range. Other species, at this time in the young stages, 

 taken at this point on the first trip, are Amblytropidia occidentalis , 

 Arphia xanthoptera, Chortophaga mridifasciata, Trachyrhachis thomasi, 

 Melanoplus femur-rubrum , and M. luridus. The following species in 

 addition undoubtedly occur in the vicinity : Tettix ornatus, Paratettix 

 cucullatus, Dichromorpha viridis, Schistocerca alutacea and rubiginosa, 

 Melanoplus scudderi, and probably several other short-winged species 

 of this genus. These species may be regarded as a fair sample of the 

 locusts most likely to be secured in northern Alabama in July. 



Of these, Trimerotropis saxatilis is a purely saxicolous species 

 restricted to bare rock surfaces. Dissosteira Carolina and Trimerotropis 

 citrina are to be found on roads and spots of bare soil; Trachyrhachis 

 thomasi2\$Q frequents bare soil and sparsely grassed fields, but is much 

 less common and very local. Amblytropidia occidentalis , Syrbula ad- 

 mirabilis, Chortophaga viridifasciata , and the species of Arphia and 



