PODOPLEA AMPHARTHRANDRIA 



65 



vessel. As the JSTauplius migrates, apparently by amoeboid 

 movements of the whole body, it loses all its appendages, the eye 

 degenerates, and the body is reduced to a minute ovoid mass of 



^ct 



-Me. 



Jnt.2. 



^Abd 



■ Ant 2 



Flo. 32.— Later stages in the development of /laemoccra danae. AM, Abdomen ; 

 Ant.l, Ant.2, 1st and 2nd antennae ; ch, cliitinous investment ; c, eye ; Ed, eott>- 

 derm ; En, endoderm ; Me.% mesoderm ; Mes d; en, mesoderm and endoderm : R, 

 rostrum ; St, mouth and stomach ; Th, thoracic appendages. (Alter Malaquin. ) 



cells, representing ectoderm and endo-mesoderm, surroundcel by a 

 chitinous membrane (Fig. 32, A). Arrived in the ventral blood- 

 vessel it begins to grow, and the iirst organ formed is a pair of 

 fleshy outgrov.'ths representing the second antennae (Fig. 32, B), 

 which act as a nutrient organ intermediary between host and 



VOL. IV -p 



