CKl'STACKA MAUACOSTRACA. III. 



Fig. 5 k. Second left male pleopod, from in front; x ao. /. distal part of the appendix 

 more highly magnified. 



Fig. 6. sEga arctica Liitkcn. 



Fig. 6 a. Proximal half of first left pleopod, from in front; x /,. j/. stcrnite; / i plate of first joint, 

 pratoxa^ fonned by the fusion in the median line of two chitinized pieces belonging to both 

 left and right pleopod; / o. major chitinized plate of first joint; ji. small chitinized inner 

 plate of second joint; ao. large more outer transverse plate of second joint; ./. third well 

 chitinized joint; en. endopod; ex. exopod. 



Fig. 7. Bathycopea typhlops Tattersall. 

 Fig. 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 la-low; 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. 

 7 L Left maxilla of the same female, from below; > 46. /'. 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. 

 7 h. Second left thoracic leg of an adult male, from behind; x 23. />. proximal part of the lower 



margin of sixth joint, more highly magnified. 

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



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



from behind and more highly magnified. 



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



Plate XV. 



Fig. i. Bathycopca typhlops Tattersall (continued). 

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



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

 i c. Third left pleopod of the same male, from below ; x 2a 



id. Fourth left pleopod of the same male, from below ; x 20. 



1 e. Fifth left pleopod of the same male, from below ; x aa 



Fig. 2. Cyathura truncata n. sp. 

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



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

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



2d. Paragnatha with distal part of right maxillula (mxt) of a female, from below; x 6a 

 TW UCOIT Emilia, m. i 



