Lake Maxinkuckee, Physical and Biological Survey 295 



Its stomach was filled to distention with chironomus larvae and 

 the remains of algae, the latter so digested as to be incapable of 

 identification. A few trematodes were found on the gills and 

 cestodes in the stomach and intestine, but no external parasites of 

 any kind were seen. 



6. White Sucker. Catostomus commersonii. 



Only four specimens of this fish were examined and two of 

 these were found dead near the shore. From one of them and 

 from the two freshly caught, were obtained eight specimens of 

 Argulus catostomi, four males and four females. The stomachs 

 of these fish contained only an indistinguishable mass of dirt and 

 vegetable remains. Many teeches were found on the dead fish but 

 it was impossible to determine whether they had fastened to the 

 fish before or after their death. 



7. Hog-molly; Stone-roller. Hypentelium nigricans. 



Two specimens of this sucker were obtained from Yellow River 

 four miles north of Lake Maxinkuckee. Their stomachs were 

 found to be filled with mud and a mixture of animal and vegetable 

 remains, the only things distinguishable being a few insect larva?. 

 No parasites were found anywhere upon them. 



8. Chub Sucker. Erimyzon sucetta. 



Two specimens of this sucker also were obtained from Yellow 

 River in connection with the preceding species. The stomachs of 

 both were empty and no parasites were found anywhere upon 

 them. 



9. Blunt-nose Minnow. Pimephales notatus. 



One of the most common forms, and also one of the best for 

 bait because it is so hardy and long-lived. The stomachs of five 

 specimens showed insect remains and plankton, the latter chiefly 

 Bosmina 1 and Cyclops. 



10. Silver-fin. Notropis whipplii. 



Another common form, and one greedily eaten by all the food 

 fishes. The stomachs of two specimens showed insect larvae, water 

 mites, and plankton. 



11. Grass Pike ; Pickerel. Esox vermiculatus. 



A single specimen of this pickerel from Lost Lake showed the 

 usual fish remains in the stomach together with trematodes and 

 cestodes. A trematode (Azygia tereticolle) was also found on 

 the gills, and a leech was fastened to the tongue near its tip. 



1 We have not endeavored to distinguish between the genera Bosmina and Chydorus. 



