PLATE CVII. 



Spirontocaris spinas, var. S (p. 599). 



Fig. 1. Lateral view ; enlarged three times. 



a. Ophthalniopod. 



b. First antenna. 



c. Second antenna ; scaphocerite. 



d. Mandible. 



e. First siagnopod. 



f. Second siagnopod. 

 h. First gnathopod. 



i. Second gnathopod. 



k. First pereiopod. 



I. Second pereiopod. 



m. Third pereiopod ; distal joints. 



m b. Mastigobranchia. 



