PLATE XXXVI. 



Figs. 1-24. Siriella thompsonii, Milne-Edwards. p 



aos 



Adult mule, from left side ; magnified about fourteen times. 



Adult female, from right side. 



Same, from above. 



Left antennular peduncle of male, with the hispid lul^e, from inner side. 



Outer part of same peduncle, from below ; more highly magnified. The hairs 

 have been removed from the male appendage to show the double band giving 

 origin to the hairs. 



Left antenna, with scale and proximal part of tiagellum, from below. 



Anterior lip and mandibles, from below. 



Terminal joint of mandibular palp ; more highly magnified. 



Cuttins; edges of mandibles. 

 Fig. 10. MaxiUa of first pair. 

 Fig. 11. Maxdla of second pair. 

 Fig. 12. Maxilliped. 

 Fig. 13. Gnathopod. 



Fig. 14. One of the anterior legs ; somewhat less magnified. 

 Fig. 15. Outer part of same ; more highly magnified. 

 Fig. 16. Leg of last pair, with male sexual appendage. 

 Fig. 17. Male sexual appendage, isolated, and more highly magnified. 

 Fig. 18. Male pleopod of first pair. 

 Fig. 19. Male pleopod of second pair. 

 Fig. 20. Branchial lobe of a pleopod of first pair. 

 Fig. 21. Branchial lobe of a pleopod of second pair. 

 Fig. 22. Telson, from above. 



Fig. 23. Extremity of same ; more highly magnified. 

 Fig. 24. Right uropod, from above. 



Figs. 25-28. Siriella gracilis, Dana. 



Fig. 25. Adult female, from above ; magnified about twenty times. 



Fig. 26. Right antenna, with scale and proximal part of fiagellum, from below. 



Fig. 27. Extremity of tail, with telson and left uropod, from above. 



Fig. 28. Tip of telson ; more highly magnified. 



