PLATE IV. 



Fig. I. Grapsus strigosus Herbst, penultimate leg (breadth of carapace 45.5 mm.), natural size. 



Fig. 2. Grapsus maculatus Catesby, penultimate leg (breadth of carapace 46 mm.), natural size. 



Fig. 3. Grapsus maculatus gracilipes H. Milne-Edwards, penultimate leg (breadth of carapace 57 mm.), 



nat. size. 

 Fig. 4. Grapsus strigosus longitarsis Dana, young cf> magn. 2' ^. Fig. \a penultimate leg, magn.. 5. 

 Fig. 3. Ptychognathus altiinanus (Rathbun), cf, magn. 2. Fig. 5a chela, outer view. magn. 2. Fig. 5^ 



e.xtemal maxillipeds of cf, magn. 2. Fig. 5^ external maxillipeds of O, magn. 3. Fig. 5 </ abdomen 



of cT, magn. 2. 

 Fig. 6. Ptychognathus guiju/ugani Rathbun, (f, magn. 2'/,. Fig. 6a front, dorsal view, magn. 5. Fig. 66 

 » chela, outer view, magn. 3. Fig. 6c external maxillipeds, magn. 3. Fig. 6d abdomen, magn. 3. 



