CHROMOSOMES OF HIPPOXOE AM> MolKA 1M 



here mi-takes in drawing are almost inevitable. It may be that 

 -OUR- -ho\vn are really two chromosomes so close together that 

 they could not be separated with the magnificat i<m u-ed. 

 The serie- i- al-o taken from two or more section- and there is 

 the ever pre-ent | >o-- il ijlit y that some may have been di-placed. 

 ! igs. 290 and 2<)''< -how a Liter anapha-c of which Fi-. ,v> i- a 

 deiailed drawing. A lio,,k (x i- -ho\\ n to la- pre-cnt. but many 

 more observations would IK- n - ry to demonstrate its prc-cnce 

 be\ond a doubt. The club-shaped type of chromosome is nol 

 in e\ jilciii-e h-re. 



A- was to be I rom lateral \ ie\\> of anapha-c- the 



only d. ui-hter plate- I found \\civ e-pecially adapted to ail 



i enumeration < .f th< ir element-. The number i- -ho\\n in 



Fij ,t</and i vhich are daughter plates of the same spindle, 



to I ;\. tlie lar^e-i number \et reported fop the eeliino- 



<lerm-. I : . i draun from t \\ sections. The charactei 



ot the Mn-.-'ti -])indle i- -ueh that I eon-ider the e\idein'e as 



to the numb' 'ironio-on. ned from this one plate much 



Illoie ( on\ iiu in- th.ui all of the eo 1 11 billed e\ idem e of a like -oft 

 \\ Inch I obtained I mm // . I hope \ extend the ob- r\ a- 



tion- on thi- species !.' 

 The Moira material \\a-coilccted at l-le.mfoi -t . \ . < '.. in 1907. 



It- treatment \\a- identical \\ilh that of //;'/' 



1 >!-. i SSN N. 



I rom oin -lu-iou- ed b\ lialt/er. '09, and Temieiil, 'il, 



it seems probabU- that in different spC( ies of a limite.l -mup the 

 hetei'ochrom..-. .me ma\ "ii-inate in dilleretit Both o| 



the-e author- u-eil the -auie method oi in\ e-t i-at ion so th.it the 

 e\ii|enc ( - o| ..lie bearing on thi- point po- no peculiar ad- 



vantage over that of the dher. Both are equally in-tilled in 

 their conc!ii-ion-. | M Strongyt '!ns liridit* and I-'.clnnns 



niicrdtntn-rcnlutits. it i- the female that i- morphol, .-icallv the 

 helero-ametic -e\ \\hile the male i- in tin- -ame -en-i- honio- 

 ^ametii'. In the li-lu of i.ur pre-ent kno\\ led-e of the Occurrence 

 of the .r\ chromo-ome in other groups the-e fact- pre-ent 



an intere-tin- aiiomaK . 



It as Balt/er found in aid a- Mi-- lletlner 



