8 On some new and rare British Crustacea. 



X 253. 4. Mandible, X 380. 5. Anterior foot-jaw, x 380. 

 6. Posterior foot-jaw, X 380. 7. Foot of first pair of swimming- 

 feet, X 170. 8. Foot of fourth pair, X 170. 9. Foot of second 

 pair (male), X 170. 10. Foot of third pair (male), X 170. 

 11. Foot of fifth pair, X 170. 12. Foot of fifth pair (male), X 

 253. 12 «. Appendage of first abdominal segment. 13. Last 

 two abdominal segments and caudal stylets, x 125. 



(?) Canthocmnptus imrvus, sp. n. 



Fig. 14. Female, side view, X 80. 15. Antennule, x 380. 16. An- 

 tenna, X 380. 17. Mandible, x 380. 18. Foot of first pair of 

 swimmiug-feet, X 253. 19. Foot of fourth pair, X 253. 

 20. Foot of third pair (male), X 253. 21. Foot of fifth pair, 

 X 380. 22. Foot of fifth pair (male), X 380. 



Maraenobiotus Vejdovskyi, Mrazek. 

 Fig. 23. Antennule, X 253. 



