PLATE XVI. 



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



Fig. 1. Adult male, from left side ; magnified about ten times. 



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



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



Fig. 4. Rudimentary dorsal lobe of antenuular peduncle ; highly magnified. 



Fig. 5. Left antenna, from below. 



Fig. 6. Inner plate of a male pleopod of first pair. 



Fig. 7. Inner plate of a male pleopod of second pair. 



Fig. 8. Gill of last pair. 



Figs. y-16. Euphausia spinifera, G. 0. Sars. 



Fig. 9. Adult male, from right side ; magnified about six times. 



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



Fig. 11. Extremity of tail, with caudal fan, from above. 



Fig. 12. Dorsal lobe springing from basal joint of antennulaj ; highly magnified. 



Fig. 13. Spine-like dorsal lobe from second joint of antennulte. 



Fig. 14. Inner plate of a male pleopod of first pair. 



Fig. 15. Inner plate of a male pleopod of second pair. 



Fig. LG. Preanal spine. 



Figs. 17-23. Euphausia latifrons, G. 0. Sars. 



Fig. 17. Male, from right side; magnified about twenty times. 



Fig. 18. Anterior part of body, from above. 



Fig. 19. Middle part of left antennular peduncle, from above, showing the dorsal lobe 

 and the spine issuing from outer corner of basal joint. 



Fig. 20. Inner plate of a male pleopod of first pair. 



Fig. 21. Inner plate of a male pleopod of second pair. 



Fig. 22. Extremity of tail, with caudal fan, from al>ov('. 



Fig. 23. Tip of telsou ; more highly magnified. 



