366 DR. T. S. COBBOLD ON SOME NEW FORMS OF ENTOZOA. 



Echinococcus vetermorum {altricipariens of Kiichemneister), precisely like those described 

 by Professor Huxley from the Zebra. I also procured some nematodes (figs. 29 and 30) 

 and cestodes (fig. 31) from an Indian Rat Snake {Coluber Blumenbachii) measuring six 

 feet lono-, as well as a single roundworm from an Indian Lizard {Calotes versicolor), 

 which, together with another large Ascaris (figs. 32 and 33) from the intestine of the 

 American Snake formerly alluded to, I have not at present been able to identify. 



DESCRIPTION OP THE PLATE. 

 Tab. LXIII. 



Fig. 1. Distoma compacium. Enlarged ^th. 



Fig. 2. Another example, x 5 diameters. 



Fig. 3. Egg of the same, x 360 diameters. 



Fig. 4. A few drops of mucus, &c., taken from the duodenum of the Oyster-catcher, and spread on a 



thin square of glass. It shows several small flukes. Nat. size. 

 Fig. 5. Distoma minutum, from the same. x 180 diameters. 

 Fig. 6. Distoma Bosci. x 8 diameters. 

 Fig. 7. Egg of the same, x 200 diameters. 



Fig. 8. Bilharzia magna. Nat. size. Assumed proportion of the lost end of the tail in outline. 

 Fig. 9. Upper two-thirds of the same, x 10 diameters. 

 Fiff. 10. Head ot Ascaris tribothrioides. X 160 diameters. 

 Fig. 11. Tail of the same, x 160 diameters. 

 Fig. 12. Colony of Coemiri from Lemur maco. Nat. size. 

 Fig. 13. Part of an immature lobule, x 20 diameters. 



Fig. 14. Tape-worm head from one of the mature papillse. x 40 diameters. 

 Fig. 15. Hooks from the same, x 260 diameters. 

 Fig. 16. Tania paradoxa. Nat. size. 

 Fig. 17. Head of the same. x 260 diameters. 

 Fig. 18. Everted extremity of the rostrum, x 260 diameters. 

 Fig. 19. Upper joints of the same, x 150 diameters. 

 Fig. 20. Tape-worm head. T. lanceolata ? x 250 diameters. 

 Fig. 21. Tail of Ascaris vesicularis. Male, x 30 diameters. 

 Fig. 22. Tail of Ascaris retusa. Male. x 25 diameters. 

 Fig. 23. Head of Tania multiformis, x 200 diameters. 

 Fig. 24. Head of Eustrongylus papillosus. Enlarged. 

 Fig. 25. Head of Tainia infundibulum. x 80 diameters. 

 Fig. 26. Tail of Heterakis dispar ? Male. About 60 diameters. 

 Fig. 27. Tail of Heterakis dispar ? Female. About 60 diameters. 

 Fig. 28. Tail of a female Ascaris from the Peccary, x 100 diameters. 

 Fig. 29. Head of an Ascaris from Coluber Blumenbachii. x 60 diameters. 

 Fig. 30. Larval nematode from a cyst in the heart of the same Serpent. x 60 diameters. 

 Fig. 31. Head of a cestode from the muscles of the same. Enlarged. 

 Fig. 32. Head of an Ascaris from the intestines of an American Snake. 

 Fig. 33. Tail of the same, x about 20 diameters. 



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