SEA-fisiiEKiEs Laboratory. 103 



IXTEEXAL PARASITES ANT) DISEASED 

 CONDITIONS OF FISHES. 



By Jas. Johxstoxe. 



Contexts 



1. COENOMORPIirS LINGVATULA (van Bexecen). 



2. TETRARHYl^CHUS BEXEDENI (Crety). 



3. GYROCOTYLE URNA, Grdbe and Wagener. 



4. GYRODACTYLUS ELEGANS, Xoedmann. 



5. MELAXOTIC SARCOMA IX RATA BATIS. 



Q. MELAXOTIC SARCOMA IX RAIA CLAVATA. 



7. FIBRO-SARCOMA FROM GADUS CALLARIAS. 



8. LYMPHOSARCOMA PRODUCIXG EXOPHTHALMOS IX 



FLE UROXECTES FEES US. 



9. ECTASIA OF THE SEXSORY CAXALS OF RAIA CLA VATA 



WITH IXTRA-CY^STIC MYXO-FIBROMATA. 



10. CUTANEOUS PAPILLOMA FROM HIPPOGLOSSUS 

 VULGARIS. 



1. Cosnomorphus linguatula (van Beneden).' 



I am indebted to a pupil of mine. Mr. Thomas 

 Newby, mate of the Fleetwood steam trawler "" Cygnet," 

 for four specimens of this most interesting Cestode. 

 They were taken from a Coalfish (Gadus virens) caught 

 to the north-west of St. Kilda, in l-'jO fathoms of water. 

 Mr. Newby had seen them frequently, but only in coal- 

 fish. He noticed that the worms were of a very unusual 

 appearance and preserved part of the liver of the host in 

 ice until the arrival of his vessel in port. Mr. T. R. 

 Bailey, Port Sanitary Inspector at Fleetwood, sent on 

 the specimen to me. All four worms were alive when 



* The only references to the occurrence of this Cestode \\hich I can 

 find are ; — 



1853. P. J. van Beneden, Bull, de V Acad. Roy. Belgique, T. XX, 

 Partie II, p. 260, pL I, Bruxelles. 



1854. Diesing, Sitznngsb. K. Alcad. Wissensch. Wien. XIII, p. 591. 



1889. Lonnberg, E. ' Ueber eine eigenthiimliehe Tetrarhynchiden - 

 larve.' Bihang till K. Svenska Vet.-Akrid. Handlingar . Bd. 15, afd. IV. 

 Xo. 7, pp. 1-48, pLs. I-III. Stockholm. 



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