30 PROCEEDINGS OF THE ACADEMY OF [1897. 



It seems strange that the unmistakable difference in size and color 

 obtaining between the woodchucks of the Hudson Bay regions and 

 those of Maryland, the type locality of monax, should not have been 

 officially recognized. With Dr. Allen's excellent analysis ot its 

 nomenclature 6 as a basis, I see no objection to designating the wood- 

 chucks of eastern North America by the following formulae : — 



1. Arctomys monax (Linnaeus), Syst. Nat., 1758, p. 60; Maryland 

 Marmot. Size small ; color gray-brown, feet brown. Habitat. — 

 Carolinian fauna, intergrading northward through the Alleghenian 

 and Canadian fauna into 



2. Arctomys monax melanopus (Kuhl), Beitrage, 1820, p. 64 ; Hud- 

 son Bay Marmot. Size large ; color brown-black, feet black. Hab- 

 itat. — Hudsonian fauna, intergrading southward with typical monax. 



19. Tamias striatus (L.). Carolina Chipmunk. 



Forty specimens, representing every locality visited, show nearer- 

 affinities to the Carolinian than the Canadian form of our eastern 

 chipmunk. Those from Delaware Gap are scarcely separable from 

 southern New Jersey examples, the Greenwood Lake series being 

 nearest to lysteri of Maine, but much darker. This animal is very 

 abundant in Warren, Sussex and Passaic Counties, but not so num- 

 erous at Lake Hopatcong. 



A temperature of 28° during my stay at Greenwood Lake did not 

 wholly silence them, though it greatly lessened their activity and 

 apparent numbers. Contrary to what I expected, no really fat spec- 

 imens were procured, and all seemed most busily intent on gather- 

 ing and storing acorns at a season when they are generally supposed 

 to go into their winter sleep. About twenty per cent of those taken 

 had the tail shortened or injured in some manner. 



20. Sciurus hudsonicus loquax Bangs. Carolinian Chickaree. 



Numerous everywhere ; abundant in the deeper evergreen for- 

 ests. 



21. Sciurus carolinensis pennsylvanicus (Ord). Northern Gray Squirrel. 

 Not common except in the vicinity of Long Lake. 



Even the former existence of the Fox Squirrel in northern New 

 Jersey rests on such unreliable evidence that I am unwilling to in- 

 clude it in this paper. 



Monog. N. A. Eod., 1877, pp. 915-917. 



