78 College of Forestry 



The 4-foot contour is upwards of 600 feet from shore. The 

 bottom is of hard sand and the vegetation is restricted to 

 Potamogeton rohhinsii. The points at either end of the bay 

 are shallow and bouldery and have a heavy growth of Dian- 

 thera and Scirpus occidentalis. Two mussels, Elliptio coni- 

 planaiiis and Lampsilis lufeola, were collected in water 5-6 

 feet deep, by Professor T. L. Hankinson, Elliptio being 90 

 per cent more abundant than Lampsilis. 



4. Frenchman Island. Mr. A. G. Whitney collected on 

 the north side of Frenchman Island, in a sheltered, swamp-like 

 pool of water protected from the roughness of the lake by a 

 bar (see F. C. Baker, 'i6a, p. '/2, and fig. 22 on p. 85). The 

 water was 18 inches deep and the bottom of mud. From the 

 leaves of the Arrow-head (Sag.ittaria arifolia) the following 

 mollusks were collected: 



3 Galba catasc opium, young, 5^, 8, 9 mm. 



3 Planorhis binneyi, young, 4, 4, 7 mm. 



I Segmentina arniigera, adult. 



I Bythinia tentaciilata, young, 4 mm. 



3 Amnicola hakeriana, advilt. 



I Amnicola bakeriana niniia, adult. 



Systematic List of the Plants of Lower South Bay 

 I. Seed Plants of the -60110111 



The majority of the plants here listed were identified by Dr. 

 Herman S. Pepoon, of Chicago, Illinois. The classification is 

 that of Robinson and Fernald ('08). As before stated, this 

 list is far from being exhaustive, only those plants being col- 

 lected that were more or less intimately associated with the 

 animal life. A careful plant survey of this territory would 

 undoubtedly bring to light many aquatic species not before 

 recorded from this reeion. 



