37 



Fig-. 7. The ' uaupliiis ' sta^e of the (leveh)})ineiit of 

 Ligia, showincr the three naiipliar appendag^es. 

 (l.c/.) and (2.^/.) the hrst and second pairs of 

 antennae, and the mandibles (maiul.); (end.) 

 endoderni fnnchinient ; (/.r. ) formative zone ; 

 (op.) optic lobe. 



Fi^. (S. A later .sta^'i' in the development, showing' the 

 eloiig'ation of llie formative and the formation 

 of appendao-es, also the rudiments of the 

 g'antiflia. (((n.) anus; (1. and 2. ni,v.) hrst and 

 secoud pairs of maxillae; (iiuvp.) maxillipedes. 



The last three fifjures are after Nusbaum. 



C. Tinling& Co., Ijtd., 53, Victoria Street, Liverpool. 



