39 



EXPLANATION OF THE PLATES. 



PLATE I. 







Euphausia superba. 



FIG. 1. Male, 4;"i mm., dorsal view of anterior end x 10. 

 Fn:. 2. Female, 45 mm., doi&al view of anterior end x 10. 



Fin. :;. " GlfiriiiHx '' stage, dorsal view of anterior end x 15. 

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



Fin. 5.- Maudilmlar palp x 1:!. 



FIG. d. Second maxilla X 1:1. 



FIG. 7. First maxilla x l:i. 



FII;. *. First thoracic limb, endopod x '.'. 



FIG. '.i. Sirond thoracic limb, endopod X '.. 



Fin. 10. Lateral s| line on carapace of female, 50 mm. x :!. 



Fn;. 11. Lateral spine on carapace of male, 4.1 mm. x :. 



Fin-. 12. Lateral spine on carapace of male, :!'.) nun. X 30. 



PLATE II. 



FIG. 1. Male, lateral view of entire animal x U. 



FIG. 2. Female, dorsal view of anterior end x l">. 



FIG. 3. Manclibular palp x :H>. 



Fin. 4. First maxilla x 30. 



FIG. 5. Second maxilla x 30. 



FIG. 6. First thoracic limb x 20. 



FIG. 7. Second thoracic limb, eudopod x -". 



Fin. 8. Calyptopis larva x 4n. 



FIG. 9. Furcilia larva x 20. 



FIG. 10. Cyrtopia larva x 2i>. 



I'l.ATE III. 



ma? runt. 



FIG. 1. Female, 28 mm., lateral view x G. 



Fn;. 2. Female, dorsal view of anterior end x li>. 



Fin. 3. Antenna! scale and peduncle x K>. 



FIG. 4. Mandibiilar palp x :<>. 



PlG. 5. First maxilla x 30. 



Fn:. (1. Second maxilla x 80. 



FIG. 7. First thoracic limb, endopod x '>. 



Fin. 8. Second thoracic limb, endopod x 1">. 



FIG. 9. Seventh thoracic limb, endopod x :'". 



Fm. in. -Rudimentary eighth thoracic limb x f><i. 



Fin. LI. Endopod of the first pleopod of the male x (>. 



l-'in. 12. Endopod of the second jilenpod "f the male x t'.n. 



I -2 



