PLATE XVIII. 



Fig. 1. Munidopsis antonii (A. Milne-Edwards), 



a. Left external maxillipede, 



Fig. 2. Munidopsis sigsbei (A. Milne-Edwards), 

 a. Left external maxillipede, 



Fig. 3. Elasmonotus Isevigatus, Henderson, 



rt. Left external maxillipede, 



Fig. 4. Elasmonotus debilis, Henderson, 



a. Left external maxillipede, 



