NO. 7 PROTECTIVE ADAPTATIONS — McATEE 187 



per cent insects together with worms, spiders, crayfish and slug; 

 Notropis procne, 36 per cent insects and in addition some worms 

 and water mites ; Notropis corniitus and Rhinichthys atronasus, 57 

 per cent insects plus same additional items as in last ; Exoglossiim 

 viaxillingua, 35 per cent insects, plus worms and fish eggs. Most 

 of the insects were terrestrial species. 

 Carr, a. M. 



1908. Food of fishes. Rep. Sci. Invest. Northumberland Sea Fisheries 



Comm. 1907, pp. 68-71. Reports on stomach examinations of 10 

 species. 



1909. The food and condition of fish obtained from the North-east coast. 



Rep. Sci. Invest. Northumberland Sea Fisheries Comm. 1908-1909, 

 pp. 41-50. Stomach analyses of seven species of fishes (pp. 43-46). 



Chamberlain, F. M. 



1907. Some observations on salmon and trout in Alaska. U. S. Bur. Fisher- 

 ies, Doc. 627, 112 pp., 5 pis. Enemies (pp. 107-109) include trout, 

 sculpins, mergansers, golden-eyes, mallards. The trout feed on 

 other fishes, insects and their larvae, snails, and bivalves. 



Cole, Leon J. 



1905. The German carp in the United States. Rep. U. S. Comm. Fisheries 

 1904, pp. 523-641, pis. 1-3. Considerable on food and economic 

 relations. Bibliography. 



Deryke, Willis. 



1922. The food of the fishes of Winona Lake. Indiana Dep. Conscrv., 47 

 pp., I pi., I map. Notes on 17 species, 6 of which are treated 

 in some detail ; yellow perch : young, midge larvae, Entomostraca, 

 amphipods ; adults, chiefly fish ; bluegill : young, chiefly midge 

 larvae and Entomostraca ; older, the same plus caddis larvae, 

 insects, snails ; large-mouth black bass : young, amphipods, Clado- 

 cera, mayfly and midge larvae; larger, chiefly fish; log perch: 

 amphipods, Cladocera, midge, caddis, and mayfly larvae, snails; 

 skipjack: chiefly nonaquatic insects; sunfish: snails, midge larvae, 

 insects; hogmolly: midge, and mayfly larvae, oligochaetes. Bibli- 

 ography. 



Eaton, E. H. 



1928. The Finger Lakes fish problem. Suppl. 17th Ann. Rep. New York 

 Conserv. Dep. 1927, pp. 40-46. Tabulation of food of some 30 

 species, 3 of which are almost exclusive fish-eaters, 7 others 

 largely so, 8 feed chiefly on larval, and 5 on flying insects. Six 

 species eat many scuds, and 4 even as adults, subsist more or less 

 on plankton Crustacea. Enemies of fish, besides their own kind, 

 include lampreys, turtles, snakes, loons, grebes, and mergansers. 



Elmhirst, Richard. 



1926. Notes on fishes from the Firth of Clyde. Scottish Nat., pp. 151-158, 

 and 179-186. Full notes on food of cod and briefer reference to 

 that of some other species. Nine kinds of fishes (including itself) 

 listed as predatory on herring. 

 13 



