T. XIIl] CRUSTACEA CASPIA. 499 



Explanation of the Plates. 



pi. i. 



Pseudocuma pectinaia, S o w i n s k y. 



Fig. 1. Adult ovigerous female, viewed from the dorsal face. 

 » 2. Same, lateral view. 

 » 3. Eight superior antenna. 

 » 4. Right inferior antenna. 

 » 5. Anterior lip. 

 » 6. Posterior lip. 

 » 7. Left mandible. 

 » 8. First maxilla. 

 » 9. Second maxilla. 



» 10. Maxilliped, without the branchial apparatus. 

 » 11. Anterior gnathopod. 

 » 12. Posterior gnathopod. 

 » 13. Leg of 1st pair. 

 » 14. Leg of 2nd pair. 

 » 15. Leg of 3rd pair. 

 » 16. Leg of 5th pair. 

 » 17. Left uropod. 



» 18. Last segment of metasome, with the telson and the bases of the uropoda, viewed from 

 the ventral face. 



PI. II. 

 Pseudocuma pectinata, S o w i n s k y 



(continued). 

 Fig. 1. Adult male, dorsal view. 

 » 2. Same, viewed from left side. 

 » 3. Ocular lobe, with the visual organ; dorsal view. 



» 4. Right superior antenna. 



» 5. Left inferior antenna, with the base of the flagellum. 

 » 6. Leg of 2nd pair. 



» 6*. Extremity of same leg, more highly magnified. 

 » 7. Leg of 3rd pair. 

 » 8. Leg of 4th pair. 

 » 9. Pleopod of 1st pair. 



» 10. Pleopoda of 2nd pair. 



» 11. Left uropod. 



» 12. Extremity of last segment, with the telson; dorsal view. 



PI. III. 



Pseudocuma Sowinskyi, G. 0. Sars. 



Fig. 1. Adult ovigerous female, dorsal view. 



» 2. Same, viewed from left side. 



» 3. Extremity of left antero-lateral corner of carapace, showing the coarsely serrated an- 

 terior edge. 



» 4. Right superior antenna. 



» 5. Right maxilliped, with the corresponding branchial apparatus. 



» 6. Anterior gnathopod. 



Bulletin N. S. IV (XXXVI) p. 335. 



