cem. Petromyzonidae. — Lampetra. 
29 
HOMia n TOMT> æe c6op r È aKseMmmpij yace BnoÆirÈ npeBpaTHBinieoa 
bmPct^ c'b : Hanp. 16 Maa 1906 (eNi 14852) MHoro jih- 
mhhok'b ^«oihoh 80 — 112 mm. n oflHa B3pocjiaa ^jihhoh 95 mm.; 
28 Hoaôpa 1906 r. ÇN1 14858) opa B3pocjraa ææhhoh 123 mm. h 
^B'Ê JIÏÏMHHKH TaKOH æe TOMHO ftJIHHH. 
CpaBHMT. 3 aMtTKM. Mhoio yace ôlijio ci. iiojihoh oqeBHRHOCTLio noica 3 aHO *), 
uto X. opisthodon Gratz., onncaHHaa H 3 B p. HeBti y üeTepôypra, ecTB hô 
mto HHoe, RaRB oÔHKHOBeHHaa p’ÊqHaa MHHora X. fluviatilis (L.) C'b bth- 
HyTLIMB H3EJROMB. 51 HM’È^B BB CBOHXB pyRaXB MH03KCCTB0 3R3eMITJIfl- 
pOBB P’ÊRHBIX'B MHHOn> H3B HeBBI J üeTepÔypra, H BC r É OH'Ï» OTHOCHTCH RTE. 
BHAy X. fluviatilis , ho bc'Éxb hxb, ROHeaHO, aerRO npeBpaTHTB bb „opistho- 
don li , ecjia HCRyccTBeHHO BTHHyTB mn. h3£irb. Bb nocji , Êfl,yK)in;eâ: CTaTE/É 2 ) 
r. T P AH.IAHOBB, He npHBORR MOHXB B03paJKeHiH, M'ÉHaeT’B ;niarH03B 
CBoefi X. opisthodon 3 J h nuTaeTca yâ'Éin.HTB nacB, ôy^TO X. opisthodon 
BceTaRH RpeffCTaBaReTB ocoôhh bh;o,b. HpeaBapHTejiBHo saM^TaMB, rto bb 
pyxaxB r. TpAmAHOBA 6hjio Bcero 5 3R3eMnjiapoBB p'Érhuxb MHHorB H3B 
Hcbbi y üeTepôypra, H3B rohxb TpH ohb onncanB 3 a X. opisthodon. Ho 
nepBOHaiiajiBHOMy niarH03y „e^HHCTBeHHoe pd^xoe OTJiHaie“ 3Toro BHRa otb 
X. j duv. 3to to, *ito aaRHÎa a3RmHRui naacTHHRH „He pacuonoaceHLi ;n,op30BeH- 
TpajiBHO, rrrb y X. fluviatilis , a hrjtb bb HanpaBJiemH otb puma rb XBOCTy; 
Ha CnHHHOH nOBepXHOCTH 3TH JIOnaCTH He CMURaiOTCH, H BeCB H3BIRB He 
HM-ÈeTB <|>opMij HHJiHH^pnqecRaro nopmua, RaRB y npouiïXB bh^obb p. Lam¬ 
petra". Ha sto mhoio 6bijio yRa3aH0, uto 3a,HHiH (hjih 6orobhh) ü3Rirhbih: naa- 
cthhrh y Lampetra (h y Petromyzon ) MoryTB bmëct'É cb h3ïjromb blijibh- 
raTBCR (npn homohi;h M. annulo-glossus, M. hyo-glossus h M. copulo-glossus 
rectus) h BTJirBBaTBCH (npn noMOin;H M. loogitudinalis linguae) 4 ). Bjiaro- 
aapa ynoMRHyTBiMB MBiumaMB, a TaRœe HÊJioMy pa;ny ÆpyraxB, aa^Hia ( 60 - 
ROBua) njiacTHHKH H3HRa MoryTB npHHHMaTB h ;nop30BeHTpajn»Hoe noao- 
aceme, h npoAOJiBHoe („otb psiaa rb xBOCTy“). ^aaie, o 6 -É 3th naaCTHHRH 
bm'Èct'É hm^iotb bhjb Y (cb h^jcrorbro H 3 orHyTBiMîï 6 oKaMHj, o 6 pam;eHHaro 
ocTpieMB Bnepe,n,B; npH BBiABararnH a3EiRa oh-é CRaa^BiBaroTca (npn noMom;H 
M. tendiüo-glossus), CTaHOBacB napajiJiejiBHBiMH apyrB ^pyry, npn BTarn- 
Bama a 3 HRa BHyTpB—pacxo^RTCa (npiî R'ÉHCTBin M. longitudinale linguae); 
bb noca^neMB cjiyaa’É „Ha cnHHeoô noBepxHOCTH sth aonacTH He cmbi- 
Rai 0 Tca“ h bb TaROMB noaoMceHia — co BTanyTBiMB r3biromb — X. fluviatilis 
npeBpaigaeTCH bb „hobbih“ bii^b X. opisthodon. 
Kor^a 3to mhoio ôbiro BBiacHeHO, r. ■ Tpaiiiahobb, bb cji’É.ayiOHjeH 
1) Cm. TpyRBi CH6. O. Ect., XXXYII, b. 1, 1906 — 7, ct P . 338. 
2) Tp. Otr. Hxt., VI, 1907, CTp. 376. 
3) Bcé 3,iarH03Bi r. Tpauiahoba npHBeffeHBi BHme, CTp. 26—27, bb npu- 
M’ÊaaHiaxB rb chhohhmhr-ê. 
4) O MBinmaxB H3BiRa Petromyzonidae cm P. Fürbringer. Untersuchun- 
gen zur vergl. Anatomie der Muskulatur des Kopfskelets der Cyclostomen. 
Jenaische Zeitschr. f. Naturwiss., IX, 1875, p. 48—55. 
