lOPCKM M nHffiHEMMOBHfl CEPHALOPODA C-BBEPHOB CHBMPH. 



19 



HHiejibHO HHffie Mtcra B-feiBJieHifl abohhhxt. peGepi Meac^y cepeAUHOH oSopoia n ymGoHajib- 

 HbiM^ KpaeM't; TaKHiix oSpaaomi BoaHHKaexTj THnn^HbiH a-ih nojinnTHXHTOBij ipexpeSepHbin 

 nyqeKi. Y onHCbiBaeMaro aKseMnjiapa aa nepBbiMi. xaKHMi nyqKOMx cjitAyeiij onflxb Asypas- 

 AfejbHoe peopo H Bnepe^H eme ABa xpexpeSepubixi iiyiKa. TaKofi nopsAOKi Aaexx ocHoeaHie 

 Ayjiaxb, Hxo npn AaJibeMiueMTj pocxi xpexpe5epHbie nojiHnxpixHXOBbie nyqKn 6bicxpo Bbrrtc- 

 Hflioxi, ABypasAtjibUbie pe6pa h nojyqaexcH CKyjibnxypa, coBcfeivii He noxojKafl na CKyjibnxypy 

 MOJioAbixTj oSopoxoBT). BixBH ABypasA^JibBbixi peSepi, nepenAa iepe3x> CH*0HaJibuyK) cxopouy, 

 He coeAHUflioxca CHOBa Bjitcxt, qxo6bi o6pa30Baxb AsypasA'fejibHoe peSpo npoxHBonojioHteoH cxo- 

 poHbi, a nepeAHflfl B'fexBb HAexx. kt. cJiiAywiii.eMy BnepeAH pe6py, xaKi qxo B-fexBii, nepexoAfl 

 ch OAiioH cxopoHbi paKOBHHbi Ha ApyryK), o6pa3yK)Ti sHrsarooSpaBHyio jinaiK). 



PoIyptycMtes diptydms Keys. npeACxaBJiaexT) *opMy, HaHSoji'fee 6jiH3KyK) m> onncbi- 

 BaeMOMy BHAy. Oht> oxjiaqaexca oojifee mnpoKHMrb cxyneniaxbiM'L ywSo, So.j'fce ysKHMX) 6ojite 

 npoAaBJieHHbiMi nocjifeAQUMi o6opoxoMT> h peSpaaiH, cobc^mi He HaKJOHeHHbiMH hjih Mente 

 HaKJiOHeHHbiMH BoepcAT'; aaAHee pe6po nyqwa y axoro BHAa upn CBOHM'b oxBtxBJieHm HaK.no- 

 naexcfl AaJKe HtcKOJibKO HaaaA^, 1x0 coBtMi. ne Ha6;iK)Aaexcfl y P. diptychoides. 



PoIyptycMtes triptyches Nik. (C. H. Hhkhxhhx. Feojior. Kapxa PoccIh, ji. 71., x. VI, 

 •tHr. 25) xaKace ofiHapyHHBaex'b qepxbi cxoACXBa Ch HarnHMi) bhaomti, ho ooH^aexca Sojifee uih- 

 poKHMT) yM6o, 6oj[te Mnoro^HCJiennbiMH HenpaBMbHO H3oryxbiMH pe6paMH. ConocxaB.iiaa 3xy 

 •popwy cb 6jiHa«a0a]HMH (qacxiEO eme HeoHHcanHbiMH) <i>opMaMH, moa^HO saKJiroqnTb, qxo naHfiojite 

 BtpoaxHbiMi ea sajieraaieMt asjiaioxca HHatneaeoKOMCKie cjioh ctj PoIyptycMtes polyptyckus Keys. 



Polyptychites variisculptus n. hp. 



Ta6a. Ill, <i.iir. 2, 



j\'!! |jf. Mfecx.: p. Aua6api.; kojiji. 6ap. 3. B. Tojijih 1893 r. 



Pa3M'fepbi: 



BHyxpcHHifi oCopoTT.. CpcAuiii ofiopoT-b. BHluiHifi oCopoTi.. 



/l,iaMexpi oSopoxa 47 mm. — 71,5 mm. okojio. . 103 mm. 



/l,iaMexpi yMoo MeacAY uiBaMH . . 16,8 » — 20 » oko.io. . 30 » 



To.iui,HHa oSopoxa 2G » okojio. . 42 « okojio. . 48 » 



Bbicoxa o6opoxa 11 » okojio. . 22 » okojio. . 20 » 



lUnpHHa oSopoxa „ 18 » okojio. . 29 » — 42 » 



BHyipeHHig o6opoxTi axoro aMMOunxa, AiawexpoMi bx 47 mm., HM'feexx. nepHC<i>HHKXOByK) 

 cKyjibxypy h ho BH-feniHeMy CBoeMy o5jiHKy npnejinataexca kx nepHc«>HHKTOo6pa3HOMy SimbirsMtes 

 inversus M. Pavlow (Les Ammonites du groupe Olcostephanus versicolor, pi. I, fig. 5) h ki 



3* 



