DEVELOPMENT OF APYRENE SPERMATOZOA. 



J23 



In. m tin-in -pi\\- out tla^rlla which ultimately fuse to form the 



tail-pirn-. The other:- move across the cell forming a bundle of 



I fibers. At its ba-r the bundle i- round hut it becomes more 



and more flatly <iv.il as thr iihrr- nio\ across the cell Fi-. u). 



I* ' * 



J r - 







> 



1 : Initial i ttiii-1. 



in oi i 



l'itnl>,r< ul, UK I m>4 ilowu nl 



tli-- IMI. li-u- aii'l tin- ! .\ ilii; 



kini; i|n\vn ni tin- luii-lt-u-; tin- ii-nt: :it mily a \>< : 



.I tli<- t-.t.il niiinln-r in tin- o-ll. bowe tin- In-^inn 



fibers. 1 '\MI partly a a an 



:.i|ll til.;' ; |)'l I". 



The mitochondria may !> -mi to tOrm the imu-r margin of a 

 rini: of differentiated c\ topla-m \\hich surround- the ba-r < >l" thr 

 bundle. The>- pn-i-t hnv until the -permah /< >< MI ha- n-arhrd 

 nhilt form 1 igs. ^ ami 10). 



