INDEX TO LOCALITIES. 



The general surface formation of the State is shown by the Relief Map of the 

 Geological Survey, a reduced copy of which forms Fig. 1 of this list. A map 

 showing the county lines and the chief towns as well as cities, forms Fig. 329, 

 and on this the black dots show the location of colonies of the pernicious scale 

 in 1898. By comparing the two maps the character of the territory for each 

 general locality may be ascertained. Many of the collecting grounds are not 

 of sufficient importance to find a place on a map so much reduced, hence it is 

 desirable to indicate not only the county but also the nearest printed town. 

 Where I have been able to do so, I have given a few words of general descrip- 

 tion. 



Some of the most forbidding territory is often the richest from the stand- 

 point of the Entomologist, and for almost all orders some locality especially 

 suited may be found. 



In response to my requests for the general character of their collecting 

 grounds, each correspondent has dwelt upon his own especial point of view. 

 The account sent me by Mr. C. W. Johnson is so well put and so characteristic 

 of the localities described that I quote it in full : 



" The most favorable collecting ground for Diplera is in the vicinity of water 

 or moist ground. If in a wooded, mountainous section, along the edges of 

 streams, woods or small openings in the woods, especially if caused by exces- 

 sive moisture, as a spring, are ideal collecting grounds ; such conditions are 

 found in Warren county, along Dunnfield creek, a small stream flowing into 

 the Delaware at the Water Gap. Similar conditions and collecting are to be 

 found in the hills around Dover and Newark : at the latter locality my collect- 

 ing in 1892 was chiefly confined to the vicinity of Belleville, along Second 

 River." 



" In the southern part of the State, three divisions might be recognized : the 

 Delaware Valley, Pine barrens, and the Maritime. The first has an average 

 width of about 15 miles, and is characterized by an admixture of species com- 

 mon to Pennsylvania and the northern part of the State, and which almost 

 disappear in the pine barrens. Riverton and Westville are good localities, 

 diversified by swamp, low and high ground, with patches of hard wood inter- 

 spersed with groves of pine." 



"In the pine barrens the Bombylidce are to be found in great abundance, 

 several species being peculiar to that section. Clementon, Atco, Da Costa and 

 Buena Vista are excellent collecting grounds with scrub-oak ridges, low pine 

 land and sphagnum swamps. The sand-myrtle in May attracts numerous Dip- 

 tera. This division covers the greater part of Southern New Jersey." 



" The maritime consists of the salt water marshes and coast, characterized by 

 the great abundance of Culex, Tccniorhynchus, Tabanus nigrovittatus and 

 Chrysops plangens ; while among the sand dunes the sand-colored Stichopogon 



(703) 



