483 
The absence of Lymnea caperata as well as of Spherium occiden- 
tale and Musculium is noteworthy. 
STATION XXXIV. 
(Plate XXIV., 2.) 
Open fields and meadows north of the Shermerville road and west 
of the East Branch of the Chicago River, on rather high ground. 
The fields are allowed to grow grass for hay. The meadow clover 
(Trifolium pratense) is the most conspicuous plant, with the addition 
of the buttercup (Ranunculus acris) in the spring. In many places 
in these fields and meadows there is an abundance of old pieces of 
wood, small pieces of board fences, rotting stumps and other debris, 
under which the smaller land mollusks abound. 
This station yielded the following species. 
MOLLUSKS. 
Agriolimax campestris. 
Bifidaria contracta. 
Bifidaria pentodon. 
Euconulus fulvus. 
Strobilops virgo. 
Zonitoides arboreus. 
Several species of beetles and a myriapod were found asso- 
ciated with the mollusks, as follows. 
BEETLES. 
Coccinella 9-notata. 
Platynus punctiformis. 
Euphoria inda. 
MYRIAPODA. 
Lithobius sp. Centipede. 
BIRDS. 
The birds noted below were observed in and about the fields: 
Red-headed Woodpecker. 
Northern Flicker. 
Chimney Swift. 
Kingbird. 
Blue Jay. 
