22 Gr. 0. Sårs. 



Pl. 2. 



Leptestheria siliqva, G. O. Sårs. 



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



magnified about 12 diameters. 

 » 2. Same, dorsal view. 



» 3. Adult male, viewed from right side; same ampli- 

 fication. 

 » 4. Animal of female sex extracted from the shell, 



and viewed from left side; magnified 19 diameters. 

 » 5. Head of female, without the antennæ, viewed from 



left side; magnified 26 diameters. 

 » 6. Caudal piece with adjoining part of trunk, viewed 



from left side; same amplification. 

 » 7. Female antennula, magnified 52 diameters. 

 » 8. Maxilla; same amplification. 

 » 9. Leg of 1st pair of female, viewed from anterior 



face; magnified 38 diameters. 

 » 10. Leg of 9th pair with some eggs attached to the 



filiform upper lappet of the exopodite. 

 » 11. Secondary plate of exopodite, more highly magnified. 

 » 12. Leg of 12th pair, showing the peculiarly transformed 



upper lappet of the exopodite. 



PI. 3. 



Leptestheria siliqva, G. O. Sars. 



(continued). 



Fig. 1. Shell of a male specimen, viewed from right side, 

 showing the shell-gland and muscular pit, as also the 

 lines of growth; magnified about 12 diameters. 



