PLATE CXX. 



Atya bisulcata (p. 700). 



Fig. 1. Lateral view ; enlarged twice. 



b. First antenna. 



c. Second antenna. 



d. Mandible ; inner and outer surfaces. 



e. First siagnopod. 



f. Second siagnopod. 



g. Third siagnopod. 

 h. First gnathopod. 



i. Second gnathopod. 

 Jc. First pereiopod. 

 o. Fifth pereiopod. 



