240 College of Forestry 
Cotylaspis insignis Leidy. This fluke infested 24 species 
including Strophitus edentulus, Anodonta grandis, Lampsilis 
luteola and L. ligamentina which inhabit Oneida Lake. 
Found in the region of the gills (p. 405). 
Distomide. A free distomid was observed in 14 species 
of mussels, including Strophitus edentulus, Anodonta 
grandis, and Lampsilis luteola which occur in Oneida Lake. 
it was observed in the mantle and is frequently the cause of 
rusty stains on the nacre of the shell (p. 405). This para- 
site has been observed in Anodonta grandis and Strophitus 
edentulus from Chautauqua Lake, N. Y. (p. 406). 
Distomide. ‘Three speices of distomids were observed in 
the encysted stage in 5 species of mussels (in the pericardium 
[3 sp.| the mantle [1 sp.] and the ovary [1 sp.]) only one 
of which Lampsilis ligamentina oceurs in Oneida Lake (p. 
406). 
Bucephalus polymorphus von Baer. Cerearia of this 
worm were observed in 15 species of mussels, of which 
Strophitus edentulus, Lampsilis luteola and L. ligamentina 
occur in Oneida Lake. The parasites infest the viscera, often 
in such numbers as to obliterate the sexual glands (p. 407). 
Certain members of the Acarina or water mites also infest 
many species of mussels as ectoparasites. Kelly (p. 407) 
records the following species. None of these mussels occur 
in Oneida Lake: 
Atax abnormipes Wolcott, infests 4 species of mussels. 
Atax arcuata Wolcott, infests 2 species of mussels. 
Ataxv fossulatus Koenike, infests 8 species of mussels. 
Ataxv indistinctus Wolcott, infests 3 species of mussels. 
Atax serratus Wolcott, infests 1 species of mussel. 
Atax stricta Wolcott, infests 11 species of mussels. 
Atax ypsilophorus Bonz, infests 4 species of mussels. 
