<J"i HKCIIKnCIIKS Sl)|{ IJ:s ClUiSTACKS. in. 



Lnrodic (Liixriiil)O(iri?); I;i C. pniic/nfa ii"li;il)i(ci;iil done |kis Ics v.anx sl;i- 

 i,'i)iiiiles coiiiiiK! scs ('oni,M'ri(''i('s ; cllc ;i|)|)iii';ii(, en m.-irs ci, s(! iiiuiilr(! iiisqu'i'i 



OWv <'s|kV<>, I;i plus nciilc conimo , (|in i,r in<-siin. (|ii(. .' ,|,. milliun'ln- dr 

 Iniii-nn.r rs(, |..Mi (•(HniiiuiM"; on lu' l:i iriicnnlr,. -urn' (jir.-ui priiilcmi.s. Dans 



Iniiivahlcii laliiHraxTil. 



M. Zenker ' i-<'iinil les r,. mliiula d ni^aiii : ccs denv es|)e<rs soiK. cci.en- 

 (l;ui( hicn (lislincles : die/ la C. urnii, les valves ollVeni le plus dv. Iianle.d' au 

 iniliew, el rl,e/ la C. nuuala !<• plus .!<■ ha.ileur eii arriere , le vilellns des 

 imU de la C. mm,, esl blane, .die/ la f.. muuUa il esl, verl ; la {]. mum/n est 

 l)ea(ic()ii|) phis p(>(ile el, a nne phase, .lappaiilieii liruilce; la C. ovum se reu- 

 cotili'o, an coiilraire , pemlani lotile la Ixdie saison. 



'•^ 'I - I'-H!. sonn.ll .,,. I H. doiMKesp,, hand el W /ni- 



l^<' '•i>i/<. i i>tn n. liMind.. !'< . .( |'<(, i(u,n< <l ipi. s Ko. h d s 

 pnni^ idiiiewMN .-.^ MMisd(^ n.,lllsd.^pM.^ j ,h | , p n le ^ S, ii .5 



1.1^ uniHuliii i>^\iyuU\yu\u\.U\\ I.uiid ml. ( n H, d .11^ I, . K.ss, . 



'I'M" '""^ 'l"i i"'idHi] Mm .1(1 ,1 h ix. J I HI .pnll (IhaHlionhh 



P" |d.<<-.. II. I.s 1,1,,.. III. ,|,n,Mil mniiisd I d(\iHil lai.' 



d<^ ilidid. .pi inhi. 



