222 



paKOBHHaxt Mytîlus edulis (cl-èaoôhoh paKyuiKn). HepBH 



A'BJiaiOT'B BT> 3THXT) paKOBHHaX'B H3BHJHCTbie, HeiïpaBHJIb- 



Hbie xoiibi h npnHHHflioT'b t-b HapocTbi h Ôyrpw nepjia- 

 MyTpoBaro aaoa Ha BHyTpeHHen noBepxHocTH, oôpa30Ba- 

 mem KOTopbixT» cjiH3HaK'b CTapaeTca 3amHTiiTb ceôa ott» 

 6jin3Karo cocBACTBa cb HepBeMT>. OôbiKHOBeHHO Ha paito- 



BHHB JKHBeTb nO HBCKOJIbKO HepBeH BIVIBCTB, H OHH CHASTl. 

 TaKTb nJIOTHO BT> CBOHXT> Tpy ÔOHKaX'b, HTO HXT> TpyilHO 



BbmyTb, He OTopBaBuiH 3aAHaro Komja. 9tott> opnrHHajib- 



HblH OÔpaST) JKn3HH HepBfl, Ha CKOJbKO MH'B H3B'ÈCTHO, eiU,e 



He 6bWb smtnewh y Oligochaeta, Mopcïtia <J>opMbi ko- 



TOpblXT> JKHByTT) OÔbIKHOBeHHO HJIH CBOÔOilHO BT> rpyHTB, 



HJin MeîKAy TpeiH,nHaMH KaMHeâ, 3a.anBaeMb]x'b npnjiHBOMT>. 

 ÎKejaa ôâvime no3HaKOMHTbca ct> 3Thmt> HepBeiwb, a BCTpt- 



THJTb CT> O/tfîOÉÏ CTOpOHbl JïOÔOnblTHyK) OCOÔeHHOCTb BT> 



cnocoÔ'B pa3MHOHîeHia y Hero, cb «apyroft CTopoHbi npn 

 ero onpe/vbJieHin yô-Biinjca bt> tomt>, k3kt> Majo yaoBje- 

 TBopaKT'b npaKTn^ecKHMT) TpeÔOBamaMi cymecTByiomia 

 KJiaccHffmKanjii Oligochaeta. 



Kjiaccn^HKaiiiH un nepBeiï 3Toh rpynnw opejuioateHo 



HBCKOJIbKO, HO HH OilHV H3T> UUiXT* H6JIb3a nOHHTaTb 3a 



cnocoôHyK) ycTaHOBHTbca. Bt> 3JieMeHTapH0H (fopM-B aB- 

 jiaeTca OHa y TpyÔe (*) h it'YiiSKeMa ( 2 ); bt> Ôoâte cjoîk- 

 hoh — y Kjianape4a n Àeona Bajuibana. Bcb 3th yneHbie 

 pacxojiHTca bt> Bbiôoplï KpnTepiyMOB'b iua pa3JHHeHia po- 

 robt* h bt» to Bpeaia, KaKT» rpyôe nojib3yeTCfl TOJbKO 

 bh-buihhmh BecbMa HôiiocTaTO^HbiMH npH3HaKaMH, Kjiana- 

 pejn>, HanpoTHBT> Toro, KJiaAerb bt» ocHOBaHie oaccH(J)H- 

 Kauiïi BHyTpeHHoe aHaTOMB^ecKoe CTpoeHie; A'Y.asKêM'b 

 oÔpamaeTca kt> (^aKTaiwb Ôio.iornqecKHM'b, kt> ocoôeHHO- 



(■) Die Famil eu der Àoneliden. Berlin. 1851. 



(*) Nouvelle classification des Annélides sétigères abranches. IVÏém. 

 de i'Acad. royale de Belgique. T. XXXI. 1858. 



