378 



a. 0. SARS, CRUSTACEA CASPIA. 



PI. XIV. 



Gammarus abbreviatus, G. 0. Sars. 



Fig. 1. Adult, ovigeious female, viewed from 



left side. 

 » 2. norsal face of urosome, viewed from 



left side. 

 » 3. Superior antenna. 

 » 4. Inferior antenna. 

 » 5. Anterior gnatliopod, with coxal plate. 

 » 6. Posterior gnatbopod, with coxal plate, 



branchial and incubatory lamell;e. 

 a 7. Second pereiopod, with coxal plate. 

 » 8. Antepenultimate pereiopod. 

 » 9. Basal part of penultimate pereiopod. 



Fig. 10. Last pereiopod. 

 » II. First uropod. 

 » 12. Second uropod. 

 » 13. Last uropod. 



» 14. Adult male, viewed from right side. 

 » 15. Accessory appendage of superior an- 

 tenna. 

 » 16. Anterior gnathopod, with coxal plate. 

 )) 17. Posterior gnathopod. 

 » 18. Last uropod. 

 » 11). Telson. 



PI. XV. 

 Gammarus obesus, G. 0. Sars. 



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



B 2. Superior antenna. 



B 3. Inferior antenna. 



B 4. Anterior gnathopod, with coxal plate. 



B 5. Posterior gnathopod, with coxal jilate, 



branchial and incubatory lamell;e. 



B 6 Second pereiopod, with coxal plate. 



B 7. Antepenultimate pereiopod. 



i> 8. Penultimate pereiopod. 



B 9. Last pereiopod. 



Fig. 10. Last uropod. 

 B 11. Telson. 



B 12. Adult male, viewed from right side. 

 » 13. Accessory appendage of superior an- 

 tenna. 

 B \4. Anterior gnathoi)od, with coxal plate. 

 II 15. Posterior gnathopod. 

 n 16. First uropod. 

 » 17. Second uropod. 

 B 18. Last uropod. 



PI. XVI. 



Niphargoides caspius, Grimm. 



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

 B Irt Lateral corner of last epimeral plate 



of mctasomc. 

 B 2. Adult male, dorsal view. 

 B 3. Superior antenna. 

 » 4. Inferior antenna. 

 » 5. Anterior lip. 

 B 6. Right mandible, with palp. 

 B 7. Posterior lip. 

 B 8. First maxilla. 

 B 9. Second maxilla. 

 B 10. Maxillipeds, without the left palp. 



Fig. 11. Anterior gnathopod, with coxal plate. 



» 12. Posterior gnathopod, with coxal plate 



and branchial lamella. 



B 13. First pereiopod. 



B 14. Second jiereiopod. 



B 15. Antepenultimate pereiopod. 



B 16. Penultimate pereiopod. 



B 17. Last pereiopod. 



B 18. First uropod. 



» 19. Second uropod. 



B 20. Last uropod. 



B 21. Telson. 



•I'ua.-Max. CTp. S58. 



