CRUSTACEA CASPIA. 



487 



PL 5. 



AmathUlina Maximowiczi, G. 0. Sara. 



Fig. 1. Adult female, seen from left side. 



11 2. Superior antenna. 



11 3. Part of same, more highly magnified, 

 exhibiting the accessory appendage 

 and the base of the flagellum. 



11 4. Anterior gnathopod, with coxal plate. 



1) 5. Posterior gnathopod, with coxal plate, 

 branchial and incubatory lamellse. 



II 6. Coxal plate of 4th pair. 



II 7. Antepenultimate pereiopod. 



II 8. Penultimate pereiopod. 



Fig. 9. Last pereiopod. 



» 10. Anterior gnathopod of male. 



11 11. Posterior gnathopod of same. 



II 11 Proximal part of penultimate pereio- 

 pod of male. 



11 12. Last pereiopod of same (the outer 

 joints omitted). 



11 13. Last uropod. 



11 14. Extremity of last segment with the 

 telson, dorsal view. 



AmathUlina pusilla , 6. 0. Sars. 



Fig. 15. Adult female, seen from left side. 



11 16. Accessory appendage of superior an- 

 tenna. 



» 17. Same of a male specimen. 



11 18. Anterior gnathopod of female. 



11 19. Posterior gnathopod of same (basal 

 joint not fully drawn). 



II 20. First pereiopod. 



11 21. Antepenultimate pereiopod (extremity 

 omitted). 



II 28. 



Penultimate pereiopod. 



Last pereiopod. 



Last uropod. 



Telson. 



Anterior gnathopod of male. 



Posterior gnathopod of same (basal 



joint not fully drawn). 



Proximal part of last pereiopod of a 



male specimen. 



PI. 6. 



Gammarus Grimmi, 6. 0. Sars. 



Fig. 1. Adult female, seen from left side. 

 11 2. Part of superior antenna, exhibiting 



the accessory appeudage and the base 



of the flagellum. 

 11 3. Dorsal part of urosome, lateral view. 

 II 4. Outer part of anterior male gnathopod. 

 11 5. Posterior gnathopod of male. 

 II 6. Anterior gnathopod of female, with 



coxal plate. 



Fig. 7. Posterior gnathopod of same, with 

 coxal plate, branchial and incubatory 

 lamellae. 



11 8. Last pereiopod. 



» 9. Last uropod. 



II 10. Telson. 



11 10a. Extremity of right lateral lobe of 

 same, more highly magnified. 



Gammarus subnudus, G. 0. Sars. 



Fig. 11. Adult female, seen from left side. 



11 12. Part of superior antenna, with the ac- 

 cessory appeudage and the base of the 

 flagellum. 



11 13. Anterior gnathopod. 



11 14. Posterior gnathopod. 



Fig. 15. Proximal 

 pereiopod. 

 11 16. Penultimate pereiopod. 

 11 17. Last pereiopod. 

 11 18. Last uropod. 

 » 19. Telson. 



part of antepenultimate 



PL 7. 

 Gammarus macroeepkalus, Grimm. 



Fig. 1. Adult male, seen from left side. 



11 2. Part of superior antenna, comprising 

 the last 2 joints of the peduncle, the 

 accessory appendage, and the base of 

 the flagellum. 



11 3. Anterior gnathopod. 



» 4. Posterior gnathopod. 



» 5- First pereiopod. 



«^H8.-]UilT. CTp. 317. 



Fig. 6. Proximal part of antepenultimate 

 pereiopod. 

 11 7. Same part of penultimate pereiopod. 

 II 8. Last pereiopod, without the outer 



joints. 

 » 9. Last uropod. 

 11 10. Second uropod. 

 II 11. Telson. 



67 33* 



