Diseases of Fishin the Adtrondacks 13 
Micropterus dolomieu, in the brook trout, Salvelinus fontinalis pallidus, 
and in two species of sunfishes, Eupomotis pallidus and Channobryttus 
gulosus. I can add to this list the common bullhead, Ameiurus ne- 
bulosus, and the blunt-nosed minnow, Pimephales notatus. The perch 
and bass of the Adirondack ponds are usually infested with this para- 
sitic pest throughout the summer. [| have been told, but have not 
seen specimens as yet, that the perch in other parts of the State are 
parasitized with this same flatworm. The general distribution of 
Clinostomum, not only in New York State, but generally in the 
Eastern part of the United States and in many places in Canada, 
makes it very desirable that some means be devised for preventing 
f, IFAD i 
Lh Wg 
FraurrE 2. A Cyst of Clinostomum marginatum in place among the 
muscle fibers of the bass, from Nebish, Michigan, from a glycerine 
preparation after teasing off part of the muscular tissue. From 
Osborne. (Reproduced by permission of author and _ Biological 
Bulletin.) 
its further spread and reducing its damage in such a wide extent of 
territory. In the Adirondacks practically all of the perch and many 
of the bass are rendered unfit for food. Certainly the problem is one 
of some economic importance. 
Three observers have reported finding the adult worms in the diges- 
tive tract of the bittern, Botaurus minor, in the heron, Ardea herodias, 
in the herring gull, Harus argentatus, the stork, Mycteria americana, 
and the black-crowned night heron, Mycticorax naevius. 
