CRUSTACEA MAI.ACOSTRACA. III. 257 



Fig. 5 k. Second left male pleopod, from in front; x 20. ap. distal part of the appendix masculina, 

 more highly magnified. 



Fig. 6. ^Ega arctica Liitken. 

 Fig. 6a. Proximal half of first left pleopod, from in front; x»/, si. sternite; it. plate of first joint, 

 prcecoxa, formed by the fusion in the median line of two chitinized pieces belonging to both 

 left and right pleopod; 10. major chitinized plate of first joint; 21. small chitinized inner 

 plate of second joint; 20. large more outer transverse plate of second joint; 3. third well 

 chitinized joint; en. endopod; ex. exopod. 



Fig. 7. Bathycopca typlilops Tattersall. 

 Fio\ 7 a. Anterior part of the head of a male with left antennula and antenna and the proximal parts 

 of right antennula and antenna, from below; x 22. /. labrum; /. first joint of the antenna; 

 /. terminal part of the antenna more highly magnified. 



— 7 b. Left antennula of an ovigerous female, from below; x 22. 



— 7 c. Left mandible of a female with marsupium, from below; x 46. 



— 7 d. Distal part of the same mandible, from behind; x 72. 



— 7 e. Left maxillula of the same female, from below ; x 46. 



— 7L Left maxilla of the same female, from below; x 46. I 1 , lobe from second joint overlapped 



by the inner branch of the lobe from third joint, but visible through the branch. 



— 7 g. Left maxilliped of the same female, from below; x 46. 



— 7I1. Second left thoracic leg of an adult male, from behind; x 23. p. proximal part of the lower 



margin of sixth joint, more highly magnified. 



— 7 i. First left leg of an adult male, from behind ; x 23. 



— 7 k. Distal part of sixth joint and proximal part of seventh joint of the leg shown in fig. 7 1, 



from behind and more highly magnified. 



— 7 1. Fifth leg of the same male, from in front; x 23. 



Plate XV. 



Fig. 1. Bathycopca typlilops Tattersall (continued). 

 Fig. 1 a. First left pleopod of a male, from below; x 20. 



— 1 b. Second left pleopod of the same male, from below ; x 20. 



— 1 c. Third left pleopod of the same male, from below ; x 20. 



— 1 d. Fourth left pleopod of the same male, from below ; x 20. 

 — ■ 1 e. Fifth left pleopod of the same male, from below ; x 20. 



Fig. 2. Cyathura truncata n. sp. 

 Fig. 2 a. Anterior part of the head of a female, from above ; x 28. 



— 2 b. Distal part of right antenna of the same female, from above; x 53. 



— 2 c. Left mandible of a female, from below; x 60. 



— 2d. Paragnatha with distal part of right maxillula [iiixl) of a female, from below; x 60. 



The Ingolf-Expcdilion. III. j. -? 



