PROCEEDINGS OF THE UNITED STATES NATIONAL MUSEUM 



issued iMrfrvA- ^Ej^ ^^ '^* 



SMITHSONIAN INSTITUTION 



U. S. NATIONAL MUSEUM 



Vol. 88 Washington: 1940 No. 3078 



TKEMATODES FKOM FISHES MAINLY FROM THE 

 WOODS HOLE REGION, MASSACHUSETTS 



By Edwin Linton ^ 



INTRODUCTION 



It has been my privilege, during a long series of years, to spend 

 the summer months at the laboratory of the United States Bureau 

 of Fisheries, at Woods Hole, Mass. During that time considerable 

 attention was given to a study of the distribution of the helminth 

 parasites of fishes. Through the cooperation of the late Vinal N. 

 Edwards, collections and observations were made so as to cover all 

 the months of the year. All collections in the months of October 

 to May, inclusive, and the greater number of those in June and Sep- 

 tember, were made by Mr. Edwards. The majority of the collections 

 in July and August, and a few of those in June and September, were 

 made by the author. 



Reports on a few trematodes from fishes not of the Woods Hole 

 region are herein included. When not stated otherwise it is to be 

 understood that digenetic forms came from the intestine and mono- 

 genetic forms from the gills. In many cases in which the same species 

 of trematode is accredited to more than one species of fish, measure- 

 ments are given of examples from different hosts, and record made 

 of differences noted. 



1 Dr. Linton died on June 3, 1939, a few days before this paper was sent to the 

 printer. — Ed. 



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