CHROMOSOMES OF HIPPONOE AND MOIRA. 175 



meets with the additional difficulty c.m-ed by the crowding of 

 the chromosomes. For their study early anaphases proved ii: 

 favorable. A reconstruction from one of the-e i- -ho\\ n injFig. r 6 

 and the \ "- from one are drawn in Fig. 7. The somatic pairs in 

 these figures are easily recogni/ed in this stage from their -i/e 

 from their behavior. In the case of the p.iir*of_lar-i-r 



'H 



rt'ff < 



78 



Ml 



13 14 15 



- 



16 17 18a 18b 18c 



M I .lIKlpl. 



i-i'. ' // : in early anaphase showing the relal 



: the \ - md h 



I lunik i -.Hi-. 



1-n. s // . d lic'-ik. 



I-l'.^ 9 to I? indusi> Iti' tu"-.nm.-.| i-l. mi-lit- In- 111 niin- .|il- 



I'-i.: -ii|..u.iti\- Ir.-i|urii, y with wliirli tin- 



iliiii-n-nt i-l.-nn ii- lh<- lii u.k i^ tin- m..~! i nii~|ii< unti-. l-'iv;. i^ i- 



\\ lii> h . i.iit.iiin-'l n. i lii.uk. 



I'..|.ir vii-u- ..i 'l.tiiclui-r \>\ m.l 



M : 



V- one arm . .(' the \' rompleie- it- di\i-i..n first in almo-t e\ . i \ 

 in-tanee. The <iue-tioii a- to whether this i- due to a meeh.inic.il 

 hindrance in di\i-i<m or to a real diliereiiee in the -i/e of the I\\n 

 arm- ha- been di-eu -ed b\- Miss Heffiier. I am inclined to the 

 opinion that the t\\<> arm- are of different lengths since that 



