366 DR. T: a. COBBOLD ON SOME NEW FORMS OF ENTOZOA. 
Echinococcus veterinorum (altricipariens of Kiichenmeister), 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 long, as well as a single round worm 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 OF THE PLATE. 
| Tas. LXIII. 
Fig. 1. Distoma compactum. Enlarged ith. 
Fig. 2. Another example. x 5 diameters. 
Fig. 3. Egg of the same. x 360 diameters. TIU 
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. — 
Fig. 10. Head of Ascaris tribothrioides. x 160 diameters. 
Fig. 11. Tail of the same. x 160 diameters. 
Fig. 12. Colony of Cenuri 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 papillæ. x 40 diameters. 
Fig. 15. Hooks from the same. x 260 diameters. 
Fig. 16. Tenia 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. : EXC 6 
Fig. 21. Tail of Ascaris vesicularis. Male. x 30 diameters. | Be 
Fig. 22. Tail of Ascaris retusa. Male, x 95 diameters. ye 
Fig. 23. Head of Tenia multiformis.. x 900 diameters, 
. Fig. 24. Head of Eustrongylus papillosus. Enlarged. 
Fig. 25. Head of Tenia 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 å 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. | | 
