PLATE XXXI. 



Penasus cancdiculatus, var. japonicus (p. 245). 



a. Ophthalruopod. 



b. First antenna. 



c. Second antenna. 



d. Mandible or siagon. 



e. First siagnopod or first maxilla. 



f. Second siagnopod or second maxilla. 



g. Third siagnopod or first maxillipede. 

 h. First gnathopod. 



i. Second gnathopod. 



i, ec. Section of the basecphysis of same. 



