299 



Golden-crowned Kinglet Regitliis satrapa satrapa Licht. 



Ruby-crowned Kinglet Rcgulus calendula calendula 



(Linn.) 

 Wood Thrush Hylocichla mustelina (Gmel.) 



Hermit Thrush Hylocichla guttata pallasi (Csh.) 



supple;me;ntary list of mammals 



Opossum . Didelphys virginiana Kerr. 



Fox Scjuirrel Sciurns niger rufiventer (Geof- 



Gray Squirrel Sciurus carolinensis Gmel. 



Chipmunk Tamias striatus hysteri (Rich- 



ardson) 

 Flying Squirrel Sciuropterus volans (Linn.) 



House Mouse Mus nmsculus Linn. 



Mole Mouse Micro tits pinetorum scalopsoides 



(Aud. and Piach.) 

 Muskrat _ fiber aibcthicus (Linn.) 



Common Rabbit Sylvilagns floridanus niearnsi (Al- 



len) 

 Raccoon Pro cyan lotor (Linn.) 



Skunk McpJiitis mcsojnelas avia (Bangs) 



Weasel Putorius novehoracensis Emmons 



Smaller Shrew Blarina parva (Say) 



Common Mole . Scalopus aquaticus machrimis 



(Rafinesque) 



RELATION OF THE WOODLAND VLRTKBRATFS 

 TO THEIR ENVIRONMENT 



The principal factors that influence the vertebrates of Bates woods 

 are similar to those which are influential in determining the character 

 of the vertebrates of the prairie area (Station I) : vegetation, topo- 

 graphy of the region, climatic conditions, invertebrates, the verte- 

 brates themselves, and the surrounding region. 



The vegetation of the woods affects vertebrates directly by giving 

 them places of concealment from their enemies and shelter from the 

 elements, and also by furnishing them with food to a certain extent. 

 The food thus provided by the plants of Bates woods is chiefly fruit. 

 There are many plants there that bear fruits known to be acceptable 

 to birds, important among which are the following : mulberry, sassa- 

 fras, poison-ivy, smilax, blackberry, sumac, wild grape, wild cherry, 

 June-berry, pokeberry, woodbine, flowering dogwood, bayberry, and 



