Ill 



PODOPLEA AMPHARTHRANDRIA 



vessel. As the Nauplius 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 



JlcL 



Ant.!.-., 



Ant 3 



-Ant.2. 



. -Abd 



L.-st. 



---Th. 



Abd. 



B C 



FIG. 32. Lalcr stairs in tin- development of lInennH-ini </</,/</,'. Al>il, Allonicn : 

 A ni. I, .\ni.,i, 1st and 2nd antennae ; <//, cliiiiiiniis invi^tnifiit ; c, eye ; !'<'!. 

 di-.riiL ; A'//, eiiiliiclcrni ; ,\/i.<, mcM,ilfi-iii ; ,1/c.s- ,( fit, nn-soil<Tiii :iii<l rmlndcnn : /.'. 

 rostrum ; ,SV, inoiith ami stoma.-h ; Th, tlmracir appcinla-i's. (After Malayan. ) 



c.t -11s, representing ectoderm ;md iido-nirsodrnii, surnuindnl by ;i 

 chitinous membrane (Fig. 32, A). Arrived in the \mt.ni.l blood- 

 vessel it begins to grow, and the. first, or^tn Ibrnicd is a pair of 

 fleshy outgrowths representing the second antennae (Ing. .'!_!, B), 

 which act as a nutrient organ intermediary between host and 



VOL. IV 



F 



