PARASITES OF FISHKS OF THE WOODS HOLE REGION. 



P.v KIiWIX LINTON, I'H. I)., 

 Professor oj Biology, U'as/iiiii;toii and Jeffrrsoii College. 



INTRODUCTION. 



It is a matter of much importance that our Iviiowledgo of parasites wliicii infest 

 fishes he jrreatly extended, and it is of ahiiost (Hjual importance that the jiarasites of 

 invertel>rates he studied, sinc(> many, if not most, of tlie parasites of tishes pass 

 a portion of their lives in invertehrate hosts which serve as food for tishes. It is 

 thus evident that the parasites of invertebrates, tlie food of tislics. and tlie parasites 

 of tishes are quite closely interrelated subjects. 



The more our knowledge of the life-histories of tish parasites is increased the 

 speedier will be the diagno.ses and the more eti'ective will be the remedies which may 

 t)e made and applied in all cases of epidemic diseases among tishes which are due to 

 parasites. Natural!}' such cases can be handled best in ponds and lakes and the 

 smaller streams. But with a thorough knowledge of the interrelations of marine 

 life, it is not uui'easonable to thinli; that ev(>n in th(> s(>a sometliing may be done to 

 turn the .scale in favor of those fishes which an- u.seful as food. 



Certain economical questions relating to parasitism have been discus.sed l)y the 

 author in an article in the Fish Commission Bulletin for l.s'.:t3 entitled '"Some 

 observations concerning fish parasites." and in the Fish Commis.sion Bulletin for 

 ISHT in an article (>ntitled "An economical consideration of Hsh parasites." 



This paper contains: (1) An annotated list of the parasites of Woods Hole fishes 

 which have been described by the author in various papers published in the Reports 

 and Bulletins of the United States Fish Commission and the Proceedings of the 

 United States National Mu.seum. 



(2) A prtdiminary notice of collections made in the sunnners of isit'.i and I'.too ;it 

 Woods Hole, Mas.sachusetts. 



(3) Notes on Nematodes which have been collected in successive yeai-s. for the most 

 part in the waters of southei-n Ni'w England. 



(rt) Notes on the food of the fishes which were examined for entozoa. 



The authority for the names of fishes is Jordan & Evermann's Fishes of North and 

 Middle America (Bulletin 47, V . S. National Museum). 



The author's papers are referred to by niunber. See page -i^-t for th(> list and 

 nimibers. 



Notes on the food of the fishes which have been examined have been introduced 

 with ureater fullness than has been done in previous papers. The arrangement of 



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