40 W. M. TATTERSALL. 



PLATE IV. 



FIG. 1. Male, lateral view x 0. 



FIG. 2. Male, dorsal view of anterior end x 20. 



FIG. 3. Inner lobe of the endopod of the first pleopods of the male to show copulatory apparatus X 80. 



Euphausia vaU?iitini. 



FIG. 4. Outline of antennular peduncle of ' Discovery ' specimen x 20. 



FIG. 5. Outline of rostrum and basal joint of antennular peduncle of 'Challenger' specimen x :!0. 

 FIG. G. Inner lobe of the endopod of the first pleopods of the male in ' Challenger*' specimen, to show 

 copulatory apparatus X 80. 



Euphausia sp, juv. 



FIG. 7. Dorsal view of anterior end of specimen, 10 mm. x 00. 



FIG. 8. Lateral view of antennular peduncle of the same specimen x GO. 



FIG. 9. Spine on the third segment of the pleon of the same specimen x 2<>. 



Euphausia orystalloroph iii*. 

 FIG. 10. Inner lobe of the endopod of the first pleopods of the male, to show copulatory apparatus X 80. 



PLATE V. 



iit antarctica. 



FIG. 1. Female, dorsal view x 10. 



FIG. 2. Enlarged view of anterior end x 23. 



FIG. 3. Side view of anterior end x 23. 



FIG. 4. Dorsal view of peculiar antennular organ x 70. 



FIG. 5. Side view of same x 70. 



FIG. 0. Mandible x 20. 



FIG. 7. Mandibular palp x 20. 



FIG. 8. First maxilla X 20. 



FIG. 9. Second maxilla x 20. 



FIG. 10. First thoracic limb x 20. 



FIG. 11. Second thoracic limb, endopod X 10. 



FIG. 12. Third thoracic limb, endopod x 10. 



FIG. 13. Sixth thoracic limb, endopod x 10. 



FIG. 14. First pleopod x 20. 



FIG. 15. Second pleopod x 20. 



FIG. 16. Third pleopod x 20. 



FIG. 17. Fourth pleopod x 20. 



FIG. 18. Fifth pleopod x 20. 



FIG. 19. Telson and uropods x 20. 



PLATE VI. 



Pseudomma lelyicae. 



FIG. 1. Female, dorsal view x 10. 



FIG. 2. Mandible x 30. 



FIG. 3. Mandibular palp x 30. 



FIG. 4. First maxilla x 3ii. 



FIG. 5. Second maxilla x 30. 



FIG. 6. First thoracic limb, endopod x 13. 



FIG. 7. Second thoracic limb, endopod X 13. 



FIG. 8. Telson X 20. 



