230 College of Forestry 
6. Reprmimn Enemies or Mouuvusks. 
These records are confined to the turtles, these reptiles 
appearing to be the only members of the class feeding upon 
fresh-water mollusks. 
Platypeltis muticus (LeSueur). Soft-shelled Turtle. 
Hay (1892, p. 552) suggests the food to probably consist 
of insects, fishes, water-snails, and similar small animals. 
Chelydra sepentina (Linnaeus). Snapping Turtle. 
Surface (1908, p. 129) examined 19 individuals of the 
Snapping Turtle, finding mollusks in the stomachs of seven. 
The mollusks are said to be snails (/elta), pond snails, and 
slugs. It would be of value to know just what species were 
represented. ‘The above statement is repeated by Ruthven 
(1912, p. 135). Surface (1908, p. 184) mentions Physa 
and Melantho (Campeloma) as occurring in the food. 
Kinosternon odoratum (Daudin). Musk Turtle. 
Surface records two out of four as eating snails (1908, 
_p. 138). They are also said to be scavengers and to eat dead 
mollusks among other things. 
Chrysemys picta (Schneider). Painted Turtle; Terrapm. 
Surface (1908, p. 150) records the molluscan food of this 
turtle as bivalves, pond snails, slugs, and land snails. 
Planorbis is mentioned as being one of the genera eaten. 
Twenty-three specimens of turtles had fed on mollusks. Sur- 
face also mentions Physa and Melantho (Campeloma) as 
occurring in the food of this turtle (op. cit. p. 184). The 
Western Painted Turtle (Chrysemys cinerea) is said by 
Ruthven (1912, p. 143) to feed on dead clams. 
Fifteen specimens of picta from Oneida Lake were 
studied, the data of which appears below. The material in- 
eluded both old and young. Nos. 1 to 9 were from Oneida 
Lake, caught in August, 1915; Nos. 10 to 15 were caught in 
a fyke net set at the mouth of Big Bay Creek, September 
4 to 7, 1915. 
