PROSOMATIC SEGMENTS OF LIMULUS 



245 



B 



M.obl 

 <*■?• _L 



n.lV 



Pit. / 2 : 3 ** G 

 sac. vase. 



n.JV* 



^^^■^ ^r^7Tv^ ^-777"-^^ NC 



Fig. 100.— Diagram of Sagittal Median Section through B, Eurypterus ; 

 C, Larval Ammoccetes ; D, Full-grown Ammoccetes. 



