MOLLUSCA. 155 



10. Vitrea ferrea (Morse). — A few specimens of this species were 

 obtained under logs and leaves in both swampy and dry woods (38, 

 39) near Rush Lake. 



11. Vitrea indentata (Say). — Small numbers of this shell were col- 

 lected: at Sand Point, among decaying leaves along the border of 

 a swamp (26) ; along the Pigeon River, under logs and driftwood 

 on wooded flats (37), and near Rush Lake, from dry woods (39). 



12. Vitrea rhoadsi Pilsbry. — This species was found in small 

 numbers at Sand Point, among decaying leaves along the border of 

 Long Lake (26), and at Rush Lake, among leaves and under logs in 

 both swampy and dry woods (38, 39). 



13. Euconulus fulvus (Miiller). — A few specimens of this shell 

 were obtained among fallen leaves in wet places along the border of 

 a large marsh and in an alder thicket along the south side of Mud 

 Lake (26), on Sand Point. It was also found in small numbers among 

 fallen leaves and under logs in both swampy and dry woods (38, 39) 

 around Rush Lake, and among leaves gathered under an overhanging 

 rock ledge at Hat Point (27). 



14. Euconulus chersinus, var. polygyratus (Pilsbry). — Two speci- 

 mens of this form were collected under fallen logs on a wooded flat 

 (37) along the Pigeon River, and a single juvenile specimen was ob- 

 tained under a log in a cedar thicket near Rush Lake (39). 



15. Zonitoides nitida (Miiller). — This species was very abundant 

 in wet places thruout the region studied. It was found as follows: 

 at Sand Point, among sedges and driftwood along the sand beach (25) 

 and among leaves and under logs along the borders of swamps and 

 lakes (26) ; along the Pigeon River, on dry and wet meadow-flats (35, 

 36) and under logs and driftwood on wooded flats (37) ; and near 

 Rush Lake, among leaves in wet woods (38). 



16. Zonitoides arborea (Say). — This appeared to be the most 

 abundant of the small land shells in the region studied. It was col- 

 lected: at Sand Point, under driftwood and among rotting sedges 

 along the sand beach (25) and among leaves and under logs along the 

 borders of lakes and swamps (26) ; on North and Stony Islands, under 

 logs in dry and swampy woods (30, 31) and under driftwood and among 

 decaying sedges along the sand beach (34); along the Pigeon River, 

 under driftwood, etc., on the wooded flats (37) and on the dry and 

 swampy meadow-flats (36, 35) ; near Rush Lake, under logs and 

 among leaves in the swampy and dry woods (38, 39) and damp mea- 

 dows (40) ; along the Pinnebog River, under logs and on wooded flats 

 (37); and at Hat Point, among leaves under a rock ledge (27). 

 Albino specimens were obtained from the inner sand dunes (29) 

 north of Rush Lake. 



