LIST OF ILLUSTRATIONS. XIII 



Page. 



Diastylis bidentata, immature female, first leg 638 



Diastylis bidentata, immature female, third leg 639 



Diastylis bidentata, immature female, last somite, telson, and uropod 639 



Diastylis bidentata, male, from the side 640 



Diastylis alaskensis, female, from the side 641 



Diastylis alaskensis, female, anterior part of body from above 641 



Diastylis alaskensis, female. Third maxilliped; first leg; third leg; last somite, 



telson, and uropod 642 



Diastylis alaskensis, male, from the side 643 



Diastylis planifrons, female, from the side 644 



Diastylis planifrons, female, anterior part of body from above 644 



Diastylis planifrons, female, third maxilliped 644 



Diastylis planifrons, female, last somite, telson, and uropod 645 



Diastylis nucella, female, from the side 645 



Diastylis nucella, female. Anterior part of body from above; first leg; last 



somite, telson, and uropod 646 



Diastylis aspera, female, from the side 647 



Diastylis aspera, female, carapace from above 647 



Diastylis aspera, female, third maxilliped 648 



Diastylis aspera, female, telson 648 



Diastylis argentata, female, from the side 649 



Diastylis argentata, female, anterior part of body from above 649 



Diastylis argentata, female, first leg 649 



Diastylis argentata, female, second leg 650 



Diastylis argentata, female, last somite, telson, and uropod 650 



Diastylis argentata, male, from the side 651 



Diastylis sulcata, immature female, from the side 654 



Diastylis sulcata, immature female, anterior part of body from above 655 



Diastylis sulcata, immature female, last somite, telson, and uropod 655 



Diastylis polita, female, from the side 656 



Diastylis polita, male, from the side 656 



Diastylopsis dawsoni, immature female, from the side 663 



Diastylopsis dawsoni, immature female, anterior part of body from above; 



antennule and antenna, mandible 663 



Diastylopsis dawsoni, immature female. Third maxilliped; first leg; second leg. 664 



Diastylopsis dawsoni, immature female, third leg 665 



Diastylopsis dawsoni, immature female, last somite, telson, and uropod 665 



Diastylopsis dawsoni, male, from the side 666 



Oxyurostylis smithi, immature female, from the side 667 



Oxyurostylis smithi, immature female . Anterior part of body from above ; anten- 

 nule and antenna; third maxilliped; first leg 668 



Oxyurostylis smithi, immature female ; fourth leg 669 



Oxyurostylis smithi, immature female. Last somite, telson, and uropod from 



above; apex of telson from the side, further enlarged 669 



Oxyurostylis smithi, male, from the side 669 



Oxyurostylis smithi, male, antennule 670 



Colurostylis occidentalis, female, from the side 671 



Colurostylis occidentalis, female. Anterior part of body from above ; free thoracic 

 somites from the side; pleural plates of third somite partly cut away; anten- 

 nule 671 



Colurostylis occidentalis, female. Antenna; third maxilliped; first leg 672 



Colurostylis occidentalis female. Second leg; third leg; last somite, telson, and 



uropod from above; tip of endopod from the side 673 



