The Relation of Mollusks to Fish in Oneida Lake 229 
arboreus (a land snail), Gontobasis informis, Galba humilis 
modicella, Physa heterostropha (all water snails), and some 
unidentifiable gastropods. 
Rana palustris Le Conte. Pickerel Frog. 
Ruthven (1912, p. 53) states that the food of this species 
consists of insects, small crustaceans and snails. 
Necturus maculosus Rafinesque. Mud Puppy, Water Dog. 
Hay (1892, p. 419) records the food of this animal as 
insects, worms, crustaceans, and mollusks. Surface (1913, 
p. 81) also reports the mollusks as affording a food supply. 
Amblystoma opacum (Gravenhorst). Marbled Salamander. 
Kats mollusks when two months old (Hay, 1892, p. 438). 
Amblystoma punctatum (Linnaeus). Spotted Salamander. 
Surface (1913, p. 89) records slugs and snails among the 
food of this species. 
Cryptobranchus alleghentensis (Daudin). Hellbender. 
Feeds on mussels, earthworms, crawfish, insects, fishes, ete. 
(Surface, 1913, p. 85). Smith (1907, p. 12) found nine 
out of twelve specimens had eaten crawfishes, only three 
having e: ten fishes. 
Diemictylus viridescens Rafinesque. Green Newt. 
Needham (1908, p. 162) says of this species, ‘‘ very com- 
mon in lily beds feeding exclusively on a small bivalve mol- 
Iusk that was common upon the pond bottom.” Ruthven 
(1912, p. 37) records water insects, small mollusks, worms, 
and tadpoles as the food of this newt. Hay (1892, p. 455 
gives the food as insects, tadpoles, worms, and mollusks. 
Gage (1891, p. 1093) gives the food as minute Crustacea, 
larvae, insects, snails and aquatic worms. 
