112 College of Forestry 
region (p. 83) which is farther divided into sessile, mud, 
poor swimming and free swimming fauna, is very interesting 
in connection with the fauna of Oneida Lake. The mud 
fauna includes 11 species of mollusks, one of which, Bythina 
tentaculata, is also found abundantly in Oneida Lake. The 
other species belong to the same genera. 
Another European work which is perhaps unique in the 
form of its illustrations of habitat characteristics, is written 
jointly by Ant. Fric and V. Vavra (1894) on the fauna of 
two artificial ponds or pools near Bechovic, Bohemia. The 
fauna of these lakes, insect, crustacean and molluscan, is 
notably like that of Oneida Lake, although the Bohemian 
lakes are small and shallow. From one of these bodies of 
water 22 species of mollusks were collected. There is much in 
this paper which is of great interest to the ecologist. 
No.-2. Comparative TABLE OF SPECIES.* 
| | 
| Inland 
Oneida | Toma-| St. | Lake | lakes, | Saginaw/Georgian 
Lake. | hawk. | Clair. | Mich. | Charle-| Bay. Bay. 
| voix. | 
| | 
Total number of species..... 62 44 45 39 53 88 41 
Species common to this region 
and to Oneida, lake...5...| 22... 21 18 15) 23 27 PAL 
UDROntid ae Nagle toydncare oho sarees 15 11 20 5} || 7 17 7 
YH MAMA 36 RoSobua Soekaeo 4 6 2 3 | 4 9 5 
I ULTDS OR TO Wee aaron atte rae tec 10 As, sae 12 | 9 10 1 
Water breathers (Am~nicola, | 
CECY INA: Petter Moe seit 12 2 i 9 | 9 | 11 8 
Air breathers (Lymnaea, etc)..| PAL 21 16 12 | 24 | 41 20 
The comparison of the Mollusca of the American localities 
mentioned above is of interest, showing the total molluscan 
population of each and the number of species of certain 
groups found in each body of water. With the exception of 
the Saginaw Bay Region, the Oneida Lake fauna is seen to be 
the largest in number species. 
*In this table varieties are treated as species. The comparison with 
Lake St. Clair is not quite fair as modern data is not at hand with 
which to make a corrected list. A larger number of species live there 
than is here indicated. 
