422 G. 0. SARS, CRUSTACEA CASPIA. [ï. XIII 



Fig. 13. Pereiopod of 2nd pair. 



» 14. Extremity of same, more highly magnified, showing the structure of the dactylar joint. 



» 15. Eight uropod (without the marginal setse). 



» 16. Telson, viewed from the dorsal face. 



» 17. Extremity of same, more highly magnified. 



» 18. Adult male, viewed from left side. 



» 19. Peduncle of left superior antenna of male, viewed from below. 



» 20. Male appendage of same, more highly magnified. 



» 21. Basal part of left inferior antenna of male, with the scale and base of the flagellum. 



» 21* Tip of the scale, more highly magnified. 



» 22. One of the outer sexual appendages of male. 



» 23. Third pleopod of male. 



» 24. Fourth pleopod of male. 



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Bulletin N. S. IV (XXXVI) p. 74. 



