ArLAX Papaveris Pkrris 



147 



Miiiiy of tliosc hiids ]i(>\v«'\'er a|»i»enie<l to coiitüiii t',ii\iis and tlicsc 

 were laid iu the <)\a)'y in Mie cavities l)etweeii Hie septa- and the 

 <)\nlae or in the eentral room. They are htn.u' , o\'al, smooth and of 

 a li.ulit yellow eolonr. The front part is ratlier pointed and is l)ri<4ht; 

 tlie other side is blnnf and ])asses impereei>til)ly into tlie stalk. These 

 stalks are very lon.y' and often twisti'd. In the oxaries we fonnd the 

 stalks with their bases to.i>ether near the cbaiinel by wbieb tbe e^gs 

 are bron^^ht in, whilst the ejiiis themselves are moi'e oi- less s<*attered. 

 The nnmber of the latter varies betwet^i .'5 t(t 40 in one l)nd. [Vitj;. 1). 



What eJianii'es take place in 

 the oxaries to form .^alls will 

 be described in Mie followin.u' 

 chapter. The yonnii' lar\'ae first 

 feed on ]»arts of the oMilae and 

 for a lonji' time live all to.ii'ether 

 in the ca\ities, which enlarj>e 

 by the swellin.y' of tlie whole 

 ovary. Only after some time 

 tlie different larval chaml)ers 

 ai-e formed as the septa swell 

 and lill n]) the cavities, lea\inii 

 a globnlons space lonnd each 

 animal. When tliese lar\ al cham- 

 bers are ([uite shn( the inner 

 tissne changes into nntricions 

 layers, I'onnd which a protect in<i' 

 tissne is formed. 



The yalls i^row (piickly and are ^•ery mncli swollen. In this 

 period the larvae de\'elop themselves very mnch. as is known to be 

 the case in every gull, ami when in the beginning of Augnst the plants 

 (lie, the amount of food is spent and tlie larvae lie against the pro- 

 tecting tissue. The galls get hard and dry and fall on the ground 

 with the ]»lants, where they stay between dead leaves (4c. during the 

 winter. The outei' spong\' tissne wastes awa>- aiul only the (piantity 

 of gall-chambers remains, looking like a. little bunch of grapes. 



The larvae ])retty soon become chrysalides and the fullgrown 

 aninnils hibernate in the gall. 



Fi<i'. 1. — TrausNLTse sfction of an ovary, 

 sliowiu^' tAVo egg's of Akhi.r papareriii 

 l)et\vi'eu tilt' septa and tlie developpiiig 

 ovules, a - eggeliauiiel. x 7. 



