THE INSECTS OF NEW JERSEY. 29 



Valley region it is at least partially two brooded; the codling 

 moth never has a full second brood, and only in exceptional 

 seasons even a partial one. And so there are other points which 

 are of economic interest and agricultural importance. 



The Delazvare Valley region extends south from Trenton 

 along the Delaware River to the bay, and along the bay to Cape 

 May, fringed south of Salem Creek by salt marshes. It extends 

 eastward an average distance of about fifteen miles, until about 

 opposite Bordentown it crosses the State in a strip about twenty 

 miles wide to the Monmouth shore. Its northern border is 

 formed by the Piedmont Plain ; its southern and eastern border 

 merges into the Pine Barrens. When it reaches the Monmouth 

 shore this region sends a narrow strip northward along the coast- 

 line, broadening along the shores of Newark Bay so as to take in 

 the entire peninsula from Jersey City to Bergen Point and 

 extending up the Hackensack Valley, including all the space 

 between the Palisade spur of the Highlands on the east and the 

 edge of the Piedmont Plain on the west. A southward extension 

 of this region extends in a narrow strip along the ocean to 

 Point Pleasant and then partially breaks up into a narrow inter- 

 rupted fringe between the Pine Barrens and the salt marsh, and 

 even appear on the large islands c. g., near Barnegat City, on 

 seven-mile beach, five-mile beach, etc. Islands of this region 

 occur also in the Pine Barrens, especially along the edges, and 

 the boundaries here are difficult to> establish. 



This Delaware Valley region contains the best agricultural 

 land in the State, and most of it is under cultivation. It is level 

 or slightly rolling and has a rich diversified flora and insect 

 fauna. Nearly the whole region has been thoroughly collected 

 over and its peculiarities are well known. 



The Pine Barrens occupy the area between the coastal strip 

 on the east and the Delaware River region on the west, and alto- 

 gether contain a greater area than any one other faunal region in 

 the State. There are no natural boundaries to the north or west, 

 and it simply merges into the Delaware Valley in an irregular 

 manner, sending out spurs and islands of all sizes and forms. 

 A singular detached island extends along the southern shore of 



