I 1 94 BULLETIN OF THE BUREAU OF FISHERIES. 



Stiles, C. W,, and Hassall, A. 



1894. A preliminary catalogue of the parasites contained in the collections of the United States 

 Bureau of Animal Industry, United States Army Medical Museum, Biological Depart- 

 ment of the University of Pennsylvania (Coll. Leidy) and in Coll. Stiles and Coll. 

 Hassall. Veterinary Magazine, vol. i, p. 245-253, 413-437. 



Tosh, Jas. R. 



igo5. On the internal parasites of the Tweed salmon. Annals and Magazine of Natural History, 



7 ser., vol. 16, p. 115-119, I pi. 



ZSCHOKKE, Fr. 



1899. Erster Beitrag zur Parasitenfauna von Trutta salar. Verhandlungen der Naturforschenden 

 Gesellschaft in Basel, bd. 8, p. 761-795, pi. 11. 



1890. Ueber Bothriocephalenlarven in Trutta salar. Centralblatt fur Bakteriologie und Para- 



sitenkunde, bd. 7, p. 393-396. 435-439, 5 fig- 



1891. Die Parasitenfauna von Trutta salar. Ibid., bd. 10, p. 694-699, 738-745,792-801, 829-838, 



8 tab. 



1896. Zur Faunistik der parasitischen Wiirmer von Siisswasserfischen. Ibid., bd. 19, p. 772-784, 



815-825. 

 1902. Marine Schmarotzer in Siisswasserfischen. Verhandlungen der Naturforschenden Gesell- 

 schaft in Basel, bd. 16, p. 1 18-157. 



EXPLANATION OF PLATE. 



Fig. I. Azygia sebago. Group of individuals from Salmo sebago, after preservation in corrosive sub- 

 limate and then alcohol. X2. 



2. Azygia sebago. Specimen from salmon, stained and mounted in balsam. Dorsal view. X12J/J. 



3. Azygia sebago. Anterior region of alimentary canal in lateral aspect. Reconstruction by 



Messrs. W. M. Anderson and H. B. Boyden. in, intestine; <e, oesophagus; os, oral sucker; 

 ph, pharynx. Highly magnified. 



4. Azygia sebago. Longisection showing relations of principal organs, exc, main excretory 



vessels; 1pm, longitudinal parencliym muscles, for explanation of which compare text; vit, 

 follicles of vitellarium. Camera drawing. X358. 



5. Azygia sebago. Female reproductive system in dorsal aspect. Semidiagrammatic to show 



relation of organs in ovarial complex, /c, Laurer's canal; od, germ duct; ov, gerraarium; 

 sg, shell gland; ul, first coils of uterus; yd, transverse vitelline duct; yr, yolk reservoir. 

 After reconstruction by Messrs. Anderson and Boyden. Highly magnified. 



6. Azyfia sebago. Transsection through o\'arial complex, showing relations of organs to common 



capsule (see text), in, intestinal crura; Ipm, longitudinal parenchym muscles; ov, germ 

 gland; ^17, shell gland; ut, first coil of uterus; vil, follicle of vitellarium; yd, common yolk duct 

 and part of yolk reservoir. Camera drawing X60. 



7. Sparganum sebago, nov. sp. Bothriocephalid larva from spleen of Salmo sebago. Drawn from 



alcoholic specimen. X2. 



8. Head of larva, shown in fig. 7 X25. 



9. S parganum sebago, nov. sp. Bothriocephalid larva from body cavity of Salmo sebago. Drawn 



from alcoholic specimen. X2. 

 10. Head of larva, shown in fig. 9. X25. 



