ome 
The Relation of Mollusks to Fish in Oneida Lake 41 
distance of nearly 500 feet, when it drops more or less sud- 
denly to 9 feet in depth. 
Borrom: Hard sand with many stones and boulders. 
Water: 10 to 30 inches deep. 
Veceration: Bulrush (Scirpus occidentalis). 
ANIMAL LIFE. 
Clams in sand between stones. Gastropods on stones and on 
sand. The latter are so adundant as to give a “ peppered ” 
aspect to the bottom, and the clams are notably abundant, the 
posterior or siphon end protruding from the sand between 
the rocks. 
MOLLUSCA. 
Lampsilis radiata. Spherium vermontanum. 
Anodonta implicata. Galba catascopium. 
Anodonta grandis footiana. Goniobasis livescens. 
Elliptio complanatus. 
Both Lampsilis and Anodonta were gravid. Some of the 
Galba had the spermaceti-like color of the same species from 
Pine Lake, Michigan. The shell of Lampsilis was rosy in 
two-thirds of the specimens. 
INSECTA. 
Caddis-fly cases (Helicopsyche  Caddis-fly cases (Leptocella spe- 
borealis). cies). 
The larval cases of this insect, which resemble a snail shell 
so closely that the experienced conchologist, Doctor Isaac 
Lea, once described it as Valvata arenifera, were amazingly 
abundant, on stones and dead shells. In many cases a stone as 
large as the hand was covered with 70 or 80 individuals. It 
is evident that a larger number of species live on or near 
this point than is indicated by the species found living. From 
shore debris 16 species of mollusks were identified, as noted 
below: 
*|. Lampsilis radiata, abundant. *5. Elliptio complanatus, abund- 
*2. Anodonta grandis footiana. ant. 
3. Anodonta marginata, 1. *6. Spherium vermontanum. 
*4. Anodonta implicata. abundant. 
