ap.pl 



Jr. bod 



sens h 



pro 





para' 



neur.pl 



setis.h 





}. 327. Nereis. t __,..._ L 



apical tuft of cilia first become distinct; //, somewhat larJr stageV'in'which tl 

 in valuation is being formed, and the rudiments of the ni< soderm bands are distinct : 

 troch< in which there are rudiments of the ; ,eti t later 



stage, in which the parapodia have begun to become prominent and 1 . d setae 



project freely; E, larva with three segments: an. ami, s ; p. ,_>'/. apical cilia; p. p/. apical 

 f>/f, eye ; //-. liod. frontal bodies; int. intestine; /. j/r/'x. longitudinal muse!. 



mo. mouth ; neur. ///. neural plate; 

 prof, prototroch ; .^>?.i. //. sensory hah 

 gro\ip of cells formed from it ; st. ston. fcer E H. Wils 



Later stages in the development. A, sta go at which the pr.tntruch and tl.c- 



ich th 



