PLATE XV. 



Figs. 1-8. Euphausia antarctica, G. 0. Sars. 



Fio'. 1. Female, from right side ; magnified about eight times. 



Fig. 2. Anterior part of body, from above. 



Fif. 3. Extremity of tail, with caudal fan, from above. 



Fig. 4. Preanal spine. 



Fig. 5. Mandibular palp. 



Fig. 6. Maxilla of first pair. 



Fig. 7. Maxilla of second pair. 



Fig. S. Leg of antepenultimate pair, with attached gill. 



Figs. 9-11. Eujjhausia mucronata, G. 0. Sars. 



Fig. 9. Adult female, from left side ; magnified about ten times. 



Fig. 10. Anterior part of body, from above. 



Fio-. 11. Extremity of tail, with caudal fan, from above. 



Figs. 12-23. Euphausia gracilis, Dana. 



Fig. 12. Adult male, from right side ; magnified about twelve times. 



Fig. 13. Eight antennular peduncle, from above. 



Fig. 14. Left antenna, from below. 



Fig. 15. Mandibular palp. 



Fig. 16. Maxilla of first pair. 



Fig. 17. Maxilla of second pair. 



Fig. 18. GiU of last pair. 



Fig. 19. Preanal spine. 



Fig. 20. Anterior part of body, from above. 



Fig. 21. Extremity of tail, with caudal fan, from above. 



Fig. 22. Inner plate of a male pleopod of first pair. 



Fig, 23. Inner plate of a male pleopod of second pair. 



