Séance du 17 Novembre 1920 



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sli'ucluial (K'Iails arc more cU'arly seen. MoicoNcr 

 Ihev ari' now slii;lilly Ionian- - I.") mm. Ioni; - and llu' 

 magniCicalioii slii;hlly i^ii-alcr .i. 



The criimpli'd appcaraiict' oi' llic apical portion is 

 (lue lo llic many folds caused by the slump hciuL; 

 comprcssi'd while slid in llie sliealli. 



h'ii^s. () and 7 drawn from |)i-epaialions in (Canada 

 balsam show Ibese same folds in a more dia,i;iamma lie 



/f 





1'"h;. C), -ÌJUjnìsa ciinm. Male killed iiiimediateiy after 

 iiiouUin.i; . Canada balsam jireparalioii of the front wing- 

 stump. b). bendili of stump :— y nnii., area of suii'aee: — 

 ■24s(i. mm. Fi'om a drawiii.^ by .1. i)"Aia;.MAN. 



b)rm. 'Idle central lra(diea is seen in each of them 

 and around it Ihe peritraidieal sheath unevenly swollen 

 l)y the blood whiidi is laishing into it. 



Let us resume Ihe record of events from the time 

 when the unfoldiiii; bi'.^an. 



It is (). 40 and the wini; stumps swollen by tiu' 

 blood wbicdi i)ei;ins to How into tluaii, W.wc taken 

 the sha|)e ali-eady described ( Figs. 4 and ô). All four 

 show at this pei-iod a convex basal portion, distinctly 

 tumelied, and a Hatter and narrower apical portion 

 willi many folds. 



