459 
mentina, as well as Musculium, was common in open spaces in the 
pond. 
The following species were secured. 
FLUVIATILE SPECIES. 
Musculium partumeium. Common. 
Physa gyrina. Common. 
Segmentina armigera. Common. 
Planorbis trivolvis. Common. 
Lymnea reflexa. Common. 
LAND SPECIES. 
Succinea retusa. Common. 
STATION VIL. 
Woods surrounding Station VII. The ground is high and dry, 
the trees are rather far apart, producing an open woodland effect. 
The ground is covered with dead leaves, rotting logs and stumps, 
and the various debris found in such a habitat. The ground about 
the pond is quite high and the slope pondward is rather abrupt. 
Polygyra albolabris was found in fair numbers in holes in logs and 
stumps and under old logs; Polygyra fraterna was common under 
logs and “‘started’’ bark; the smaller land snails were plentifully 
distributed in old stumps and on chips and other small debris; 
while Succinea ovalts was common under dead leaves in small hol- 
lows. Zomnttoides was plentiful under “started”’ bark. 
The following species were secured. 
LAND MOLLUSKS. 
Polygyra albolabris. Occasional. 
Polygyra fraterna. Common. 
Pyramidula alternata. Rare. 
Agriolimax campestris. Common. 
Zonttoides arboreus. Common. 
Succinea avara. Rare. 
Succinea ovalis. Common. 
INSECT LIFE. 
Ceuthophilus sp. Cricket; under log with land shells. 
Pterostichus permundus. Beetle; under log with land shells. 
