KPCKia H HHHHEMMOBHJI CEPHALOPODA CiBEPHOH CHBHPH. 57 



Btotl BHAt 6^H30KT) KT) Gardioccras Tolli, oxt KOTOparo OTJiHiaexcfl Sojifee BSAyxwMe 

 BO BHtuiHeii CBoea nojiOBHH'fc oSopoxawa d x^'dbimT), cjia6o BbiAaiomnMCfl khjigmi, Koxoptm oxi. 

 SoKOBbixT, DOBepxHOCxeH paKOBHHLi HG oxA'fejieH'L BnaABHaMn. MojiOAbie oSopoTbi Cardioceras 

 Tolli xoHte 6ojiie BSAyxw, H'£)vn> Bspocjibie bo BuiiiiHeH cbogh qacxn, ho AaJieKo ee b-l xaKon 

 cxeneHH, n kbji. y hhxx, 6oxfee ocxpbiH a BbicxynawmiH. PaKOBHHa ue Bnojiat BbiAtJieHa as'b 



IIOpOAbl. 



Cardioceras jacuticum n. sp. 



Ta6ji. XV, <i.iir. la, lb, Ic, 2. 



JV» H n A*" If. Mtcx.: p. AHaSapi; kojiji. 6ap. 9. B. Tojjih 1893 r. 



BspocibiH 3K3eMnjmpT> (K?. |^) axoro BHAa AOBOJibHO cnjibHO CAaBjienij n HeAonycKaexi 

 cKOJibKO-HoSyAb HaAeatebiXT) HSMtpeHiS; xiiM^ ne MGHfce, npHSHaKH, oxjiHiaK)m,ie ero oxx> Bcfe-b 

 H3B'£cxHbixt bhaobtj Cardioccras, Bbicxynawxi cb AOCxaxoiHofi flCHOCxbio. npnanaKH axn cjihjijio- 

 ii],ie: cpeAuie o5opoxbi, ao Aiamexpa okojio 70 mm. (pnc. lb), HMfeioxi. CKyibnxypy, npnGjin- 

 Htawmywcfl no o6iii,eMy xnny kx. CKyjrbnxyp-fe Cardioceras Mouillieri Nik,, x.-e. ct> ptAKHMH 

 H KpynHbiMH yMSoeajibHbiMH pe6paMa, ^ojibiuan »iacxb KoxopbixX) HecBflsana ct> yM5oHajibebiMH 

 pe6paMH Bx> onpeA'feJieHHbie nyqKa, eo BH'feinBifl pefipa y 3Xoh <i>opMbi ropasAO MHoroiHCJieHH'fee 

 H xoHbuie, ocoSeHHO btj nojoct, npHMbiKaiomen k-l khjk): na KaacAoe yMSoeaabeoe pe6po npa- 

 xoAHxcfl nflxb, p'fcHce mecxb, BHfeniHHxX) peSepi h Bcfe oet paBeoMtpHo pasBoxbi 6e3i npeo6jia- 

 Aanifl peCepx., c:iyjKain,Hxx> npoAOJiaceeieMx, yM5oHajbHbixx,. 3y6qaxbiH kmb Meo'fee MaccHBeHx>, 

 3y6n,bi ero Meebme h name h He cxojib onpeA^jieHHO CBfl3aHbi cx> yxoHHBniHMHca 6jih3Xi Hero 

 peSpaMH, KaK^ y Cardioceras Rouillieri, rA'fe KaatAoe pe6po, hoaxoah kx. khjiio, yxojmaexcfl. 

 ripH AiaMexpt, npeBbimaiomeMi 70 mm. (pac. 1 a), cKj^Jibnxypa paKOBanbi Sbicxpo asrjiaffiB- 

 Baexcfl a o6opoxbi npaHBMaioxx. *opMy, CBoacxBeHHyio Cardioceras excavatum. SySiBKa kbm, 

 KaKx> a y C. excavatum coxpaHBioxcfl eme Ha SHaiaxejibHOMX) npoxBHceHia cjitAywmaro o6o- 

 poxa; saHHMaioxxi jia ona nojiOBBHy oCopoxa hjib acqeaaioxX) paH'fee, — xpyAHO cKasaxb, BCJitA- 

 cxfiie DJioxoB coxpaHHOCxH 3xoro o5opoxa. 



MajeHbKia 3K3eMnjiflpi JV^fgl (pnc. 2), oxHocHMbia naMa kX) axoMy BBAy, Ao AJaMexpa 18 mm. 

 BMiexx. AOBOJibHO qacxbifl, HO cjia6bifl yMSoHajibHbifl pe6pa (26 Ha o6opoxt), AoxoAsmin ao 

 nojoBHHbi uiHpHHbi oGopoxa a oKaHqaBatomiHca SyropKaMa; BHimHaa nojiOBana oSopoxa yKpa- 

 niena qacxbiMH BntniHHMH peSpaMB, nsi iBCjra Koxopbixi H-feKOxopbia, o6biKHOBeHHO bi qncat 

 AByxx>, oxxoabxxj oxx, 6yropKOBX., a abe hjb xpa Apyria HM-feioxx. xapaKxepxj npoMeacyxoHHbixx, 

 a npoAOJiacaioxcfl bx> xohkIh cKJiaAoiKH, pacnojoaceHHbia bi npoMea{yxKaxx> MeH?Ay yM^onajib- 

 HbiMB peSpaMB. ITpa Aa-JtBiSmeMi Bospacx'fe yM^oHajibBbm pe6pa Sbicxpo yMeubmaioxcfl bx> 

 qacji'l (8 Ha no-iyoSopox-fe) a yBeJingHBaioxcfl bx> pa3Mipax^, — yBeMiBBaioxcH bi pa3M'fepaxx> 

 (xoxfl a He Bi xanoH creneHn) a BB'^femHin pefipa; ohh cajibH-fee aaKjiOHBioxcji BnepeAx> a, nenpe- 

 pbiBaflCb, nepexoABxi bt, oyropKH KajiH, 



3an. *n3.-lIaT. Ota. ° 



