— 4 — 



coxpaHfleT'fc BO Bceii CBoeS Maccfe cnocoGnocTt iipon3BOAHTb 9Jie- 

 MCHTH ToM HJiH ApyroH HSi* yKa3aHHX'L CMcyreMi. opraHOBt. 



CTaBfl TaKMMT. oupasoMt BonpocL o paBBHTiw iiepH4>epH(ie- 



CKOŁI HepBHOii CMCreMŁI, MM HMteMl. T-feM-L HC MCH^fee BT) BH^y 



iipeHi^e Bcero T-fe en oT;j.ifejitj, KOTopme CTOiTt bt. npHMOMi. otho- 

 meniH kt> nepiiH'iHHMT> opranaMb <łyBCTBT>. Ooman uocTaHOBKa bo- 

 upoca 3A'fecbHyatHa jtJiH ycTaHOBJieHia mcxoahoh ToqKH sptnia JtJia 

 oojite flcnaro iipeACTaBJienia bi. oOjiacTu, óojite nact HUTepecyio- 

 m,eH. Bi> BHAy 3Toro uauie HSJiOrKenic 'óA'h(ih oyjieTi, oTHOCMTtca 

 iioiTH HCKJiiOMMTeJiŁHO KI, Ichthyopsida H oaBHbiMt oGpasoMt K^ 

 ueHTpajitiioH rpyiiiiife naiuero M3CJi'b;i,oBaHia, wh Selachii. 



OTnocMTejibHo HX'b Mbi HMlieMTb yace cojiajiHoe ocHOBanie bt. 

 H3CJi'fe;i.0BaHiax'Ł Ban-b Beiie (15), w ^opHa(17); 'ó^'hch iipome, 

 Ti-feMT, rA'fe jim6o, iia'iaJibHbie iipoii,eccbi; cK);^a oTHOcarca rjiaBHbiM-B 

 oopasoMi. M iiamu coocTBeHHua Haójnojienia. OcTaBJiaa bt> cto- 

 poH-fe pa3CM0Tptiiie BOiipoca no OTjttjibHbiMi. rpyniiaMt, KOTopoe 

 OKa3aj[ocb 6u upM btomTj Kpaiłue HepaBHOM'fepiibiM'L, mu Bociiojib- 

 3yeMca Teiiepb BTb usjioźKCHiM ^ipyrHMT. iipicMOMi., HMta bt, BHjty 

 BCK) rpyiiiiy Ichthyopsida^ a hst* JiMTepaTypHbix'b MCT0'iimK0B'b 

 ocTaHOBMMca jimub na r-feK-b, Koropbie CToaTt btj 6jiua«aiiujeM'b 

 OTHOlUeHiH KI. TOMy MJIM ^pyi^OMy MOMCHTy MS-b BMuieiipuBeAeH- 



HOH iT0CJi'fe;i.0BaTejibH0CTM pa3BMTia iiepM<i)epMqecKOH HepBHoii ch- 



CTeMH. <I>aKTOB'b, KacaK)mMXCa H'feK0T0pbIXT> H31. 9T«X'b BOIipO- 



coB-b, BT, jiHTepaTyp'fe do-Ubiuoii 3aiiac'b; ][;m Bbiacuenia uojioate- 

 nia Bemeii Ba/ł«Hbi jimiib cooTB-fercTByiomia MX'b rpyiiimpoBKU 

 H ocBiłuneHie. Ho bi* H'fcKOTopbix'b cjiyiiaax'b Heo6xojł.HMbi ;i.o- 

 iio-inenia u iiepepaGoTKa na pa3JiiiqHbix'b iipeACTaBMTejiax'b a?H- 

 BOTHaro napcTBa. Ocoócnnaro BHHMaHia wb 9tomt> oTnoiueiiin 

 3acjiy/KHBaH)'n> <&aKTbi, cooómenHbie Kyii^epoMi. (22) Kaca- 

 TejibHO pasBHiia raHoicBi) y mmeofm. 



I. 

 3a>iiJKaHie Hepiuioii rpyOKH h oOocoÓJieHie ch ott> ;^KTo,^ep\in. 



B'b ;i,aHH0Mx cjiyia-fe mu iiMteMi> bt, Bn;iy iipeiiMymecTBeH- 

 Ho ce.iiaxiM a aMi»M6iii, llocjit o6pa30BaHia nepBHoii njiacTuaKW 



