273 Part III — Seventeenth Annual Report. 



PLATE XIII. 

 * Diaptomus laciniatus. 

 Fig. 1. Female, dorsal view ..... 

 Fig. 2. Foot of fifth pair, female .... 



Fig. 3. Foot of fifth pair, male ..... 

 Fig. 4. Last three joints of right antennule, male 



* Diaptomus hircus, Brady. 

 Fig. 5. Female, dorsal view .... 

 Fig. 6. Foot of fifth pair, female 

 Fig. 7. Foot of fifth pair, male . . ... 



Fig. 8. Last three joints of right antennule, male 



Orchestia mediterranea. 

 Fig. 9. One of the anterior gnathopods 

 Fig. 10. One of the posterior gnathopods 

 Fig. 11. One of the last pair of perseopods 



Pysllocamptus fairliensis, T. Scott. 



Fig. 12. Female, side view 



Fig. 13. One of the antennules, female . 



Fig. 14. One of the antennae 



Fig. 15. One of the mandibles 



Fig. 16. Foot of first pair of swimming-feet 



Fig. 17. Foot of fonrth pair of swimming-feet , 



Fig. 18. Foot of fifth pair . 



Fig. 19. Last abdominal segment, and caudal furca 



Delavalia giesbrechti, var. 

 Fig. 20. Foot of first pair of swimming-feet 



Fig. 21. Foot of fifth pair 



Fig. 22. Last abdominal segment, and caudal furca . 



* Ceriodaphnia quadrangUoOL, var. 

 Fig. 23. Post-abdomen of female .... 



x 32. 

 xl90. 

 xl27. 

 xl90. 



x 42. 

 x253. 

 xl27. 

 x!70. 



x 18. 

 x 18. 

 x 9. 



• 



xl60. 



=. 



x456. 





x456. 





x760. 





x456. 





x456. 





x380. 





x 19C\ 



x380. 

 x380. 

 xl90, 



xl52 



* Reference to these species will be found in my paper on the Fresh-Water Lochs of Scotland in 



this Report. 



