PLATE CVIII. 



Nauticaris marionis (p. 603). 



Fig. 1. Lateral view ; enlarged twice. 



a. Ophthalmopod. 



b. First antenna. 



c. Second antenna, scaphocerite. 



d. Mandible. 



e. First siagnopod. 



f. Second siagnopod. 



g. Third siagnopod. 

 h. First gnathopod. 



i. Second gnathopod. 

 i". Second gnathopod ; mastigobranchia. 

 I. Second pereiopod. 



v. Sixth somite ; v", articulated process at the infero-posterior angle. 

 vz. Rhipidura ; lateral view. 

 „ 2. Branchial apparatus in situ. 



