I.KIMI.MS WITH CHRYSOMELID BEETLES. 



embryos became \i-ible through the chorion on the sixth day 

 (July 5). Ho\\e\er, the eg'^- ( li'l not hatch, as is usually the 

 case, on the fifth or -ixth das i Hefner. 19080), nor on the seventh 

 or eighth clay. Loss of water no doubt prevented the larva- 

 from breaking through tin- i horion. 



TABLE I. 

 M \M. "i i. .rapha > : LAID BY 4 BEETLES AT 



I I' M . ' ' J 1 tn ... I.RATURE. 2.} 



I Mil I II. 



WEIGHINGS M : LAID BY 5 Mi i n rs \r 



C. 



Av< 







.2 

 .3 



7 1 

 6 





It ha- brt-n m\ < u-tom t<- kcr|i a -mall |)ii-ce <if tiller |iapi-r. 

 IlK.i-trlled \\ith di-lilled water, in the \\atrll glaSS \\ith the 

 (o prc\ciit df-iccatioii. 'I'oo mufh mni-ture frei |iieiit 1\ enable^ 



a tnngii- to establish a growth upon the < 1 mi-ion, sometimes check- 

 ing the hati liin- i >\ tin - \>,,> little moisture' ma> al-o 

 |'ic\ciu hatehing. In nature the egg- are laid on the under -ur- 

 face ot lea\e- uliele tiles ale kept -lllt'u iellt 1\ HK'i-t b\ the COH- 

 deii-ation \ \\ater \a|mr at night. 



1 1 In- inui-i.-nr,! tih. -i I'.ip.T u.i- removed July Qth and returned on July 10. 



Phis account* r.irtl>- ti>i the comparatively great l<i>< in weight during tins inu-rv.d. 



-I\\int\ <'t tin- egga li.itih'-il i'ii Jul\ ij. The chorions from which tlu- 



i|)i-il \\richrd 1.170 mi;., "i ."5>-.s m^. per chorion. 



