CRUSTACEA CASPIA. 



313 



PI. XX. 



Corophium nobile, G. 0. Sars. 



Fi{<. 1. Adult, ovigerous female, viewed from 

 left side. 

 » 2. Adult male, from right side. 

 » 3. Superior autenna of female. 

 » 4. Inferior antenna of same. 

 )) 5. Anterior lip. 

 » 6. Posterior lip. 

 » 7. Left mandible, with palp. 

 » 8. Right mandible, without the palp. 

 » 9. First maxilla. 

 » 10. Second maxilla. 



Maxillipeds. 



Anterior gnathopod of female, with 

 coxal plate. 



Posterior guathopod of same, with in- 

 cubatory lamella. 

 Pk'opod. 



luncr corner of the basal part of same, 

 more highly magnified, showing the 

 peculiar structure of the 2 marginal 

 spines. 



PI. XXI. 



Corophium nobile, G. 0. Sars 



(continued). 



Fig. 1. Adult male, viewed from the dorsal 



face. 

 » 2. Superior antenna of same. 

 » 3. Inferior antennae of same. 

 » 4. Outer part of the flagellum, highly 



magnilied, showing the 2 terminal 



hooks. 

 » 5. First pereiopod of male, with coxal 



plate and branchial lamella. 

 y> G. Antepenultimate pereiopod (do). 



Fig. 



7. Penultimate pereiopod. 



8. Last pereiopod. 



9. Urosome, without the left 1st and 2nd 

 uropod; dorsal view. 



10. First uropod. 



11. Second uropod. 

 Last uropod. 



Telson, from the dorsal face. 

 Same, viewed obliquely from right side, 

 showing the vertical, dcutated crests. 



12. 

 13. 

 14. 



PI. XXII. 

 Corophium chelicorne, G. 0. Sars. 



Fig. 1. Adult, ovigerous female, viewed from 

 left side. 



M 2. Frontal part of cephalou; dorsal view. 



" 3. Superior antenna of same. 



» -1. lnferi<ir antenna of same. 



)) .0. Adult male, viewed from right side. 



M (!. Superior antenna. 



» 7. Inferior antenna. 



« 8. Anterior gnathopod, with coxal plate. 



Fig. 9. Posterior gnathopod. 



» 10. First pereiopod. 



n 11. Antepenultimate pereiopod, with bran- 

 chial lamella. 



1) 12. Penultimate pcreinpud. 



u 13. Last pereiopod. 



>) 14. Urosome, without the right 1st and 2rid 

 uropod; dorsal view. 



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

 » 2. Superior antenna of female. 

 » 3. Inferior antenna of same. 

 M 4. Anterior antenna of m.ale. 

 « .0. Middle part of inftrior antenna 

 same. 



PI. XXIII. 

 Corophium curvispinum, G. 0. Sars 

 (Figs. 1-9). 

 Fig. 



of 



6. First pereiopod. 



7. Last pereiopod. 



8. Urosome, without the right 1st and 

 2nd uropod; dorsal view. 



9. Second uropod. 



Corophium robustum, G. 0. Sars. 

 (Figs. 10—16). 



Fig. 10. Adult male, viewed from left side. 

 » 11. .'\nterior antenna of same. 

 )) 12. Middle part of inferior antenna of 



same. 

 » 13. First pereiopod, with coxal plate and 



branchial lamella. 



*U3.-MllT. CTp. 221. 39 



Fig. 14. Last pereiopod. 

 »" 15. Urosome, without the left 1st and 2nd 



uropod. 

 H 16. Second uropod. 



