.388 



PKOF. W. J. DAK.TN ON THE 



4. Dakin. — The Onychopliora of West Australia. Proc. Zool. 



Soc. London, 1914. 



5. Dendy. — On the Oviparous Species of Onychophora. 



Q. J. M. S. voh xlv. p. 388. 



6. Dexdy.— Zoo]. Anz. Bd. xxx. Nr. 6, 1906, pp. 175-177. 



7. Fletcher. — On the Specific Identity of the Australian 



Peripatas, etc. Proc. Linn. Soc. N. S. W. 1895, vol. x. 



8. Gaffron^— Zoolog. Beitrage (Sclmeider). Breslau, 1883. 



9. Sedgwick. — Various papers on Feripatus. Reprinted in 



vol. iv. Studies from the Morphological Laboratory of the 

 University of Cambridge. 1889. 



10. Sedgwick. — Article on Onychophora in Cambridge Natural 



History. 



11. Sheldon.— Anatomy of Feripatus capensis, etc. Q. J. M. S. 



vol. xxviii. 1888. 



12. Baldwin Spexcer. — Proc. Roy. Soc. Yictoria, vol. xxi. (n. s.) 



pt. 2, 1909. 



13. WiLLEY. — Anatomy and Development of P. novce-hritannice. 



Zoological Results. Part I. 1898. 



DESCRIPTION OF FIGURES. 

 Plates I.-V. 



Feripatoides occidentalis. 

 JFig. 1. Dissection, sliowing slime gland, alimentary canal, and salivary gland. 



2. Dissection, female, showing reproductive organs and nephridia. X 5|. 



3. Dissection, male, sliowing reproductive organs and crural glands. X 5|. 



4. Photomicrograph. Transverse section, showing large seminal vesicle 



lying above alimentary canal and crural papilla retracted. 



5. Longitudinal section. Salivary gland. X 400. 



6. Inner face of body- wall in freshl}' dissected specimen, showing arrange- 



ment of main trachea. The piece extends across the two vential 

 nerve-cords, and laterally up one side and beyond the mid-dorsal line. 

 The positions of three legs are shown (N). X 20. 



7. Alimentary canal-wall under low power, showing tracheae branching. 



X 96. 



8. Tracheal branching. X 640. 



9. Tracheal tube, showing spiral thickening. X 800. 



10. Section through crural gland. X 160. 



11. Nephridium in longitudinal section, showing cilia. X 240. 



12. Photomicrograph of ciliated part of nephridium. 



13. Opening of vas deferens into vesicula seminalis, section to show structure 



of wall. X 2U0. 



14. Photomicrograph of section through vesicula seminalis, showing sper- 



matozoa and spermatogenesis. 



15. Transverse section. First part of vas deferens. X 200. 



16. Median part of vas deferens, with mass of spermatozoa. X 200. 



17. Terminal thick-walled part of vas deferens. X 200. 



18. Longitudinal section. Ductus ejaculatorius. X 200. 



19. Diagrammatic transverse section in plane of last pair of legs. X 24. 



:20. Diagrammatic transverse section in plane where vas deferens crosses below 

 nerve-cords posteriorly. X 24. 



21. T. S. Part of wall of anal gland of male. X 240. 



22. Diagram showing connections of receptacula seminis with oviducts, and 



ovaries. X 200. 



23. T. S. Infundibular region of oviduct. X 200. 



24. L. S. Wall of ovary and oviduct. X 240. 



25. T. S. Duct of receptaculum seminis. X 280. 



