PLATE XXXVI. 



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



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



Adult female, from right side. 



Same, from above. 



Left antennular peduncle of male, with the hispid lobe, 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 gi^'ing 

 origin to the hairs. 



Left antennae, with scale and proximal part of fiagellum, from below. 



Anterior lip and mandibles, from below. 

 Fig. 8. Terminal joint of mandibular palp ; more highly magnified. 

 Fig. 9. Cutting edges of mandibles. 

 Fig. 10. Maxilla of first pair. 

 Fig. 11. Maxilla 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. Eight 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. 



