The Relation of Mollusks to Fish in Oneida Lake 259 
Genus Nepuronagsas Crosse and Fischer. 
15. Nephronajas ligamentina (Lamarck). Fig. 40, No. 2. 
A single specimen, apparently referable to this species was 
found at station XXX, habitat 2 (Frenchman Island). It 
was so peculiar that it was referred to Dr. Bryant Walker 
who agreed with the writer in considering it ligamentina. The 
specimen is 40 mill. long and is deep grass-green with rays 
of yellowish green. The species probably lives in deeper 
water than was investigated at this locality. Ligamentina is 
a species typical of the Mississippi valley which has migrated 
as far east as western New York. It is recorded in the 
Tomahawk Lake region from the Wisconsin River and Gil- 
more Creek. It is not a species of lakes but rather of rivers, 
and further records from Oneida Lake will be looked for 
with interest. It is listed from Cross Lake by Beauchamp. 
Mussels are eaten by some fishes, although the different 
species have not been recorded. Under the names of 
Unionidz and Pelecypoda, these mollusks have been recorded 
as eaten by: Round Buffalo, Common Red Horse, Channel- 
eat, Common Bullhead, Brook Trout, Heros Sunfish, Yellow 
Perch, Sheepshead, Large-mouthed Black Bass, and Small- 
mouthed Black Bass. 
Anodonta is eaten by: Common Red Horse, Channel-ecat, 
Long-eared Sunfish, Pumpkinseed, and Sheepshead. 
ORDER TELEODESMACEA. 
Famity Spuarip”. 
Genus SpHartum Scopoli. 
16. Spheriwm striatinum (Lamarck). Fig. 45, No. 31. 
This small bivalve occurred, uncommonly, at only two 
stations, where the bottom was sandy and the habitat was 
Fig. 42. 1, Strophitus undulatus ; 2, Lampsilis iris, female; 3, Strophi- 
tus edentulus; 4, Anodonta grandis; 5, Lampsilis radiata, 
male. 
