The Relation of Mollusks to Fish in Oneida Lake 157 
of the study collection of the New York State College of 
Forestry. The percentages are all of total volume. Regard- 
ing material, it was found that specimens caught with hook 
and line, or seined, produced better results than those caught 
in fyke, trammel, or gill nets. If the fish remained for any 
time in these nets, as was usually the case, the stomachs were 
found to be empty and the intestines filled with a mass of, 
usually, unrecognizable material. The numbers in paren- 
theses are the field numbers of the New York State College 
of Forestry. 
A. ONEIDA LAKE FISH. 
Upwards of 110 specimens, representing 16 species have 
Leen studied and the contents of their digestive organs noted. 
For the sake of completeness all available records relating to 
our American mollusk-eating fresh water fish are included, 
even though they do not inhabit Oneida Lake or even New 
York State. It is believed that all important data from 
American species on this subject is here included, although it 
is possible that some of the literature may have been over- 
looked. Unless otherwise stated the references are from the 
works of Forbes, notably his Summary and Discussion, pub- 
lished in 1888. Species not recorded from Oneida Lake are 
marked with an *; those not recorded from New York State 
are marked with a 7. The sequence of species is that of 
Forbes and Richardson (1909). 
* Accipenser brevirostrum LeSueur, Short-Nosed Sturgeon. 
According to Bean (1912; p. 190-192) the adult Short- 
nosed Sturgeon feeds upon mollusks. He says: “ Up to the 
third month of its life the young sturgeon has minute conical 
teeth in its jaws, and at this age it is believed to subsist on 
rhizopods, unicellular algze, infusoria, minute larve of 
insects and worms, crustaceans, ete. Still following the 
observations of Professor Ryder, we learn that the sturgeon, 
when it has reached a length of one inch to one and one-half 
inches, has minute teeth on the floor of the pharynx and | 
