26 ö. O. Sårs. 



Explanation of the Plates. 



Plate I. 

 Jheringula pauleusis, G. O. Sars. 



Fig. 1. Parthenogenetic ovigerous female, viewed from left side; 

 magnified 68 diameters. 

 -? 2. Same, ventral view. 



3. Gamogenetic female with fully developed ephippium, viewed 

 from left side; same amplification. 



4. A detached ephippium, viewed from left side, showing the 

 inner capsule with the 2 ova contained in it; magnified 

 81 diameters. 



5. Right antennula, viewed from inner side; magnified 130 

 diameters. 



6. Adult male, viewed from right side ; magnified 80 diameters. 



Plate II. 



Jheringula pauleusis, G. 0. Sars, 



(continued). 



Fig. 1. Anterior part of an adult female specimen, viewed from 

 left side, and showing the internal organs (antennæ omitted) ; 

 magnified 110 diameters. 



2. Part of left valve at the infero-posteal corner, showing the 

 marginal spines and setæ; same amplification. 



3. Left mandible viewed from inner side, magnified 185 dia- 

 meters. 



- 4. Maxilla. 



5. Left series of legs in their natural position, viewed from 

 the outer face. 



6. First leg isolated. 



- 1. Second leg, do. 



- 8. Third leg, do. 



9. Fourth leg (viewed from the inner face). 



