204 = - College of Forestry 
The large percentage of mollusks in the Oneida Lake sun- 
fish is noteworthy, as is also the large quantity of insects in 
those from Green Lake. The lack fof mollusks in the two 
smaller lakes is possibly due to the absence of this class of 
animals on their feeding grounds. 
Cottus wctalops (Rafinesque). Common Sculpin; Muller's 
Thumb. 
From Sucker Brook near its mouth, August 20, 1915. 
No. 1 (23). 100 mill. long. 
Food all digested. 
No. 2 (23). 90 mill. long. 
Nematoda. 1 round worm, 90 mill. long in stomach. 
. The above information is very unsatisfactory. Guill (1908, 
p- 108) says of the food of this group of fishes: “ The 
species are noted for voracity, and they are indiscriminate 
feeders. They are most active in search of food during the 
hours of darkness, as has been remarked by Fatio. Insects, 
worms, gammaroids and other small crustaceans, or the fry 
or even the small fishes of no inconsiderable size have been 
noted by Smitt and others as subjects of capture. They are 
even cannibalistic and do ‘not object to eating smaller 
brothers and sisters ’.’ 
Bean and Weed (1909, p. 458) examined 14 specimens of 
the Alaskan Fresh-water Seulpin (Cottus dispar) and found 
them to have eaten 39 salmon and 46 salmon eggs. One of 
these had eaten 7 salmon, 2 to 3 inches long. The presence 
of nematode worms was noted in 13 sculpins, in the intestine, 
body cavity or other parts of the body. As many as 53 
worms were found in one sculpin (a female) and as few as 
one, also in a female. 
Semotilus atromaculatus (Mitchill). Horned Dace; Creek 
Chub. 
From Sucker Brook near its mouth, August 23, 1915. 
No. 1 (38). 135 mill. long. 
Insecta. Fragments, mostly legs.......... 10 per cent. 
Macerated material {2.6.25 cmses meee 90 per cent. 
ee pe 
