bo 
D 
= 
38 College of Forestry 
Comparison is made with four localities outside of the 
State: Isle Royale, Lake Superior (Walker, 1908), Sagi- 
naw Bay, Mich. (H. B. Baker, 1911), Tomahawk Lake, 
Wis. (F. C. Baker, 1911), and Georgian Bay, Ontario (Rob- 
ertson, 1915). The number of species common to all five 
localities are shown and the percentage of the widely dis- 
tributed species as compared with the total number listed 
from the locality. It will be noted that only one locality 
(Saginaw Bay) has a larger number of species (84), exceed- 
ing Oneida Lake by 22 species. It is probable that this per- 
centage of difference will entirely disappear when Oneida 
Lake is more thoroughly searched in locations not reached by 
the 1915 field work. 
4. Mo.xztusxs rrom Fisu Hatrcrrrtes. 
Lists of mollusks collected in or near fish hatcheries are 
not common. Some years ago, before the present Caledonia 
hatchery was established, a biological survey was undertaken 
of Caledonia Creek. The fresh-water mollusks noted are 
listed below (Lintner, 1878, p. 25): 
Limnea catascopium Planorbis parvus. 
Limnea desidiosa (now obrussa). Amnicola obtusa (now Annicola 
Limnea humilis (now humilis mo- emarginata) . 
dicella) . Spherium species. 
Physa heterostropha. Pisidium abditum. 
It is interesting to compare the mollusks living in Chau- 
tauqua Lake with those recorded from Oneida Lake. In 
$02 Evermann and Goldsborough (p. 175) published a 
list of the fishes and mollusks of Chautauqua Lake, 15 in 
number; all but four of the mollusks live in ‘Oneida Lake. 
The list is given below, those species represented in the 
Oneida list being marked with an *: 
*“Campeloma decisum Say. Spharium rhomboideum Prime. 
*Valvata tricarinata Say. *Spherium striatinum Lamarck. 
*Planorbis trivolvis Say. Spherium suleatum Lamarck. 
*Planorbis campanulatus Say. *Anodonta grandis footiana Lea. 
*Planorbis bicarinatus Say (now Unio gibbosus Barnes. 
antrosus Conrad). *Lampsilis luteola Lamarck. 
*Lymnea palustris Miiller. *Strophitus undulatus Say. 
Physa ancillaria Say. *Strophitus edentulus Say. 
