SHIRAS EXPEDITIONS TO WHITEFISH POINT. 151 



very favorable for young i:)erch for large nuiiil)ers of them \ver(> found 

 about the water lily growth there. 



Some of the large perch from Station 24 of the marsh lakes were 

 colored as follows: light yellowish olive above with transverse bands 

 of olivaceous black, sides yellowish-white, undor parts white, pectoral 

 and anal fins greenish j-ellow, ventral fins reddisli orange. 



One fish, 8 inches long, from Station 24, had eaten two leeches and 

 a caddice larva. In the stomachs of four little ]ierch from the Lake- 

 Superior shoal were entomostracans (Cyclops viricJis hrevispinosus and 

 Diapiomus ashlandi), which w^re the same as those making up the 

 bulk of the material in the stomachs of the young Avhitefish, herring, 

 and sticklebacks found in the same habitat. Notes on the food of this- 

 species are given by S. I. Smith (1873a), who found them eating small 

 fish, spawn of fish, and dipterous larvae, and 1)y Forbes (1880), who 

 obtained from stomachs of adults, mollusks, crustaceans, insects, and 

 small fish, and in the stomachs of the young entomostracans and Chir- 

 ononms. Forbes (1890a) records perch eating large, red Chiron- 

 omus larvae in certain Wisconsin lakes. Marshall and Gilbert (1905) 

 state that perch eat insect larvae, snails, crayfish, some other crusta- 

 ceans, minnows, fish spawn, plankton, and plants. 



Perch are eaten by at least two species of fish found in the Whitefish 

 Point region, the common pike and the burbot (Reighard 1913 and 

 Forbes 1888). 



G. B. Goode (1884) considers perch common along the south Lake 

 Superior shore and states that Whitefish Bay has fishing grounds for 

 perch, and that fishermen consider them detrimental to M'hitefish. 



26. Hadroptenis aspro (Cope and Jordan). Black-sided Darter. — 

 One small example of the black-sided darter, an inch long, was found 

 in the collection made in the shallow water at the northwest corner of 

 Shelldrake Lake. 



27. Boleosoma nigrum (Rafinesque). Johnny Darter. — Four speci- 

 mens, 1 to 1.5 inches long, were found in the collection made at the 

 northwest corner of Shelldrake Lake. 



28. Elheostoma iowae Jordan and Meek. loAva Darter. — This 

 darter is common in the marsh lakes, but none were found elsewhere 

 in the region, except one small example in the small beach pool at 

 Station 121. In the marsh lakes they are present over both sandj- 

 and mucky bottoms. On the latter a network of their trails often 

 formed a conspicuous bottom feature. 



Some fifty specimens, 1 to 1.7 inches in length, were taken. A few 

 of them were in high coloration as follows: above greenish-yellow with 

 faint dark blotches, the dorsal fin black with a coral red band near its 



