PLATE XXXVIII. 

 Figs. 1-7. Heteromysis hermudensis, n. sp. 



Fig. 1. Adult femalp, from right side ; magnified about eighteen times. 



Fig. 2. Same, from above. 



Fig. 3. Left antcnnular peduncle, from above. 



Fig. 4. Antennal scale. 



Fig. 5. Telson, from above. 



Fig. 6. Young, in pupa-stage, extracted from the marsupial pouch, and viewed from right side; highly magnified. 



Ficf. 7. Same, from below. 



Figs. 8-14. Ecto- Parasites of Schizopoda. 



Fio-. 8. Heteropltriixun appcndiculatus, n. gen. et sp., affixed to the dorsal face of a specimen of Euphausia 

 pellucid a; lateral view, a, female ; b, male. 



Fig. 9. Notophryxiis lateralis, n. sp. («), affixed to base of penultimate giU of a specimen of Nematoscelis 

 inegalaps ; lateral view. 



Fig. 10. Same parasite together with male (a), from below ; more highly magnified. 



Fig. 11. Notophryxiis globularis, n. sp. (a), affixed to the posterior part of the dorsal face of carapace in a 

 specimen of Thysanoessa gregaria ; lateral view. 



Fig. 12. Dajus siriellce, n. sp., female, with male (a) affixed, viewed from above; liighly magnified. 



Fig. 13. Same (female and male), from below. 



Fig. 14. Male, isolated and viewed from above ; more highly magnified. 



Figs. 15-23. Endo-Para sites of Schizopoda. 



Fi". 15. Echiiiorhynclius corrugatus, n. sp., lying within the perivisceral cavity of a specimen of Eiiphmisia 

 pdlueida ; lateral view. 



Fig. 16. Same, isolated, and more highly magnified. 



Fig. 17. Anterior extremity of same, with proboscis protruded. 



Fig. 18. One of the hooks from the proboscis ; highly magnified. 



Fi"-. 19. Distomum filiferuin, Leuckart, M.S., attached within the perivisceral cavity of a specimen of Nemato- 

 scelis megalops ; lateral view. 



Fig. 20. A specimen of the parasite, together with the sac-like body, isolated, and viewed from below. 



Fig. 21. Another specimen, with the Ijyssus thread exserted, from left side. 



Fig. 22. Fragment of a byssus thread together with a number of fine adhesive fibres; highly magnified. 



Fig. 23. A packet of adhesive fibres. 



