414 ARTHUR DENDt". 



PLATE 20. 

 rigs. 4 — 11. Ooperipatiis oviparus. 

 Fig. i. — General dissection from tiie dorsal surface, slightly diagrammatic. 

 Fig. 5. — Transverse section of male specimen tlirongh tlie region of the 

 pharynx, showing the buccal tracheal pi(s, union of the salivary ducts, dorsal 

 longitudinal furrovF. Drawn under Zeiss A, ocular 2, camera outline. 



Fig. 6. — Transverse section of female specimen, showing two eggs in the 

 oviducts. Drawn under Zeiss A (bottom lens removed), ocular 2, camera 

 outline. 



Fig. 7. — Outer and inner jaw-blades. Drawn under Zeiss C, ocular 2, 

 camera outline. 



Fig. 8. — Another jaw-blade. Drawn under Zeiss C, ocular 2, camera 

 outline. 



Fig. 0.— Lower parts of oviducts, with ovipositor. 



Fig. 10. — Posterior portion of specimen from Cooran, Queensland, dis- 

 sected from ventral surface, showing lower parts of oviducts, ovipositor 

 protruded, x 10. 



Fig. 11. — Upper portion of oviduct, showing receptaculum seminis and 

 irregular protuberances. Drawn under Zeiss A, ocular 2, camera outline. 



PLATE 21. 



Figs. 12 — 26. Ooperipatus oviparus. 



Fig. 12. — Ovary, showing separation into riglit and left halves. 



Fig. 13. — Portion of ovary, showing ovarian ova in different stages of 

 development. Drawn under Zeiss A, ocular 1, camera outline. 



Fig. 11. — Young ovarian ova, from section stained with borax carmine. 

 Drawn under Zeiss D, ocular 1, camera outline. 



Fig. 15. — Older ovarian ovum, "from section stained with borax carmine, 

 showing vitelline membrane and formation of yolk granules. Drawn under 

 Zeiss D, ocular 1, camera outline. 



Fig. 16. — Yolk corpuscles and granules from still older ovarian ovum from 

 section stained with borax carmine. Drawn under Zeiss D, ocular 1, 

 camera outliue. 



Fig. 17. — Yolk corpuscles from thick-shelled egg from oviduct; stained 

 with eosin and mounted in oil of cloves. Drawn under Zeiss D, ocular 1, 

 camera outliue. 



Fig. I.*^. Part of immature chorion from egg of Queensland specimen. 

 Stained with eosin. Drawn under Zeiss D, ocular 2, camera outliue. 



