SCHIZOPODA. 39 



EXPLANATION OF THE PLATES. 



PLATE I. 



Euphausia superba. 



Fig. 1. — Male, 45 mm., dorsal view of anterior end X 10. 



Fig. 2. — Female, 45 mm., dorsal view of anterior end x 10. 



Fig. 3. — " Olacialis " stage, dorsal view of anterior end x 15. 



Fig. 4. — Late Cyrtopia stage, dorsal view of anterior end x 30. 



Fig. 5. — Mandibular palp x 13. 



Fig. 6. — Second maxilla x 18. 



Fig. 7. — First maxilla x 13. 



Fig. 8. — First thoracic limb, endopod x 9. 



Fig. 9. — Second thoracic limb, endopod x 9. 



Fig. 10. — Lateral spine on carapace of female, 50 mm. x 30. 



Fig. 11. — Lateral spine on carapace of male, 45 mm. x 30. 



Fig. 12. — Lateral spine on carapace of male, 39 mm. x 30. 



PLATE II. 



Euphausia crystallorophias. 



Fig. 1. — Male, lateral view of entire animal x 6. 



Fig. 2. — Female, dorsal view of anterior end x 15. 



Fig. 3.— Mandibular palp x 30. 



Fig. 4. — First maxilla x 30. 



Fig. 5. — Second maxilla x 30. 



Fig. 6. — First thoracic limb X 20. 



Fig. 7. — Second thosacic limb, endopod x 20. 



Fig. 8. — Calyptopis larva x 40. 



Fig. 9. — Furcilia larva x 20. 



Fig. 10. — Cyrtopia larva x 20. 



PLATE III. 



Thysanoessa macrura. 



-Female, 28 mm., lateral view x 6. 

 -Female, dorsal view of anterior end x 10. 

 -Antennal scale and peduncle x 15. 

 -Mandibular palp X 30. 

 -First maxilla x 30. 

 -Second maxilla x 30. 

 -First thoracic limb, endopod X 30. 

 -Second thoracic limb, endopod X 15. 

 -Seventh thoracic limb, endopod X 30. 

 -Rudimentary eighth thoracic limb X 60. 

 -Endopod of the first pleopod of the male X 60. 

 -Endopod of the second pleopod of the male X 60. 



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