PLATE CIII. 



Synalpheus falcatus (p. 574). 



Fig. 1. Lateral view ; enlarged three times 



c. Cephalon, frontal region ; with b, first, and c, second antenna. 



d. Mandible. 



e. First siagnopod. 



f. Second siagnopod. 



g. Third siagnopod. 

 h. First gnathopod. 



i. Second gnathopod. 



k. First pereiopod ; larger chela, left. 



//. Chela open to show the form of the dactylos. 



/.'". First pereiopod ; smaller chela, right side. 



to. Third pereiopod ; terminal joints. 



q. Second pleopod, bearing ova. 



zv. Rhipidura. 



