212 Wisconsin Academy of Sciences, Arts, and Letters. 
Station XIV. 
Creek at east end of Lake, near town of Tomahawk Lake. 
The creek is on the south side and extends well into the shore 
where a wide area of swamp has been formed by the rising of 
the water level. The creek is quite deep, but the swamp is bare¬ 
ly covered with water in many places, though spots occur where 
the water is several feet deep; the bottom is covered with soft 
mud. A Castalia odorata and Nymphwa advena society occu¬ 
pies the creek while a heavy Typha latifolia society with Ponte - 
deria cordata occupies the swampy portion 
Substation I. 
The following mollusks were common on the under side of 
the lily pads: 
Lymnwa columella. 
Ancylus parallelus. 
Physa ancillaria warreniana (young). 
Planorbis parvus. 
Amnicola cincinnatiensis. 
Substation 2. 
On logs and on the shore in the shallow water of the flooded 
area, where the habitat is protected from the rough water of the 
mouth of the creek. 
MOLLUSCA COLLECTED. 
Lymnwa lancelata. 
Planorbis bicarinatus unicarinatus. 
Planorbis trivolvis. 
Substation 3.. 
Entrance to creek, which is deep, the shores sandy and the 
water shallow for some ten or twelve feet where it becomes quite 
deep. The snails were observed on sticks and logs and on the 
sandy bottom. The naiads were plentiful on the sandy beach in 
water from ten to thirty inches in depth. 
