The Relation of Mollusks to Fish in Oneida Lake 105 
Narrow-leaved Cat-tail (Typha an- sroad-leaved Arrow-head (Sagit- 
gustifolia). taria latifolia). 
Blue Flag (Iris versicolor) . 
Mollusks are abundant on the muddy or sandy bottom or 
on vegetation. 
Blliptio complanatus, common. Galba palustris, rare. 
Lamps.lis borealis, common. Planorbis trivolvis, common. 
Vivipara contectoides, common. Planorbis campanulatus, common. 
Campeloma integrum, common. Physa ancillaria warreniana, rare. 
Bythinia tentaculata, common. Succinea avara, rare. 
Galba catascopium, rare. 
4. Ponp TyPpr. 
Station XVIII. In this type of habitat the body of water 
is large, completely protected by rising banks, and the depth 
ranges from 6 to 8 feet. The bottom asnally consists of mud. 
It is probable that a more extended search would bring to 
light additional species, only two being noted, both commonly. 
Anodonta grandis. Campeloma decisum. 
Fig. 31. Station XL. Big Bay, from Shepard Point. 
