172 Wisconsin Academy of Sciences, Arts, and Letters. 
Lake Michigan. Cnticular cysts were also found in Green Lake on 
the speckled bullhead, Johnny darter, smallmouth black bass, large- 
mouth black bass, and yellow perch. In the same lake visceral 
cysts were found in the speckled bullhead, pickerel, and yellow 
perch. 
Crepidostomum sp.? 
A single unidentified Crepidostomum was found in the intestine 
of a carp from Lake Pepin. 
Crepidostomum cornutum (Osborn) 
In the intestine of the channel cat in Lake Pepin; the rock bass, 
yellow and speckled bullheads, and one mud puppy in Lake Michi¬ 
gan. 
Crepidostomum illinoiense Faust 
In the intestine of the mooneye in Lake Pepin. 
Cryptognomius chyli Osborn 
Present in the intestine of the rock bass and smallmouth black 
bass in Lake Geneva; rock bass and pumpkinseed in Lake Michigan. 
Diplostomum sp. ? 
Black cuticular cysts, which probably were D. cuticola van Nord- 
mann, were found on the rock bass, pumpkinseed, bluegill, small 
and largemouth black bass, and wall-eyed pike in Lake Geneva; 
rock bass, Johnny darter, sucker, carp, pickerel, pumpkinseed, 
bluegill, both black bass, yellow perch, and wall-eyed pike in Lake 
Mendota; black bullhead, carp, pickerel, pumpkinseed, log perch 
in Lake Pepin; rock bass, pickerel, bluegill, smallmouth black bass, 
and yellow perch in Green Lake; on the yellow perch in Lake 
Michigan. 
Visceral Diplostomum cysts commonly occurred in the liver and 
peritoneum; sometimes on the heart and in the muscles. In Lake 
Geneva they were found in the rock bass, pumpkinseed, bluegill, 
both species of black bass, yellow perch; in Lake Pepin in the 
pumpkinseed and log perch; Green Lake: rock bass, pumpkinseed, 
top minnow, bluegill, cisco, smallmouth black bass, and blunt- 
nosed minnow; Lake Michigan: rock bass, pumpkinseed, and log 
perch. 
