4 
Page. 
Somatic taeniasis 68 
Family Tseniidse; subfamily Teeniinse 68 
Cysticercosis 68 
Infection with Cysticercus cellulosse 68 
The so-called Cysticercus visceral is and C. tenuicoUis hominis 72 
Unidentifiable cysticerci (?) 75 
Hydatid disease, Echinococcosis 75 
Genus Ech i nococcus 75 
The hydatid tapeworm, Echinococcus granulosus 76 
The multilocular echinococcus, Echinococcus granulosus multUocularis 83 
Family Dihothriocephalid.se ; collective group Sparganum 83 
Hanson’s larval tapeworm, Sparganum mansoni 85 
The proliferating Japanese tapeworm, Sparganum proliferum 86 
Bibliography 93 
Index to zoological names 95 
Index to authorities cited 1Q3 
LIST OF ILLUSTRATIONS. 
Figs. 1-13. — Dihothriocephalus latus: 
1. Strobila. Natural size 16 
2. Head and anterior end of same. Enlarged 16 
3. Transverse section of head. Enlarged 16 
4. Ventral view of three segments. Enlarged . . 16 
5. Longitudinal, sagittal section of segment. Enlarged 17 
6. Transverse section of segment. Enlarged 17 
7. Dorsal view of genital organs. Enlarged 17 
8. Ventral view of genital organs. Enlarged 18 
9. Gravid segment. Enlarged 18 
10. Egg. Enlarged 18 
11. Onchosphere. Enlarged 18 
12. Two larvae - 18 
13. Piece of fish infected with larvae 19 
Figs. 14-20. — Dihothriocephalus cordatus: 
14. Strobila. Natural size 20 
15. Head and anterior portion. Enlarged 20 
16. Transverse section of head. Enlarged 20 
17. Segments. Enlarged 20 
18. Portion of strobila. Natural size 21 
19. Gravid segments. Natural size 21 
20. Four young specimens. Natural size 21 
Figs. 21-27 . — Diplogonoporus grandis: 
21. Dorsal view of piece of strobila. Natural size 22 
22. Ventral view of same 22 
23. Transverse section of same 22 
24. Ventral view of piece of strobila, showing two rows of genital pores. 
Enlarged 22 
25. Ventral view of lateral half of same, showing anatomy. Enlarged. . . 22 
26. Partially diagrammatic figure of genital ducts. Enlarged 23 
27. Egg. Enlarged , 23 
