8 OTPilflt COLYMBIFORMES. 



1890. = Pygopodcs Seebohm ('subordo). 

 1893. = Colymbiformes Gadow (ordoj. 

 1898. = Cdlymbi Bkddard. 



AiarH03i. Cohjmbomorphae alis remigibus veris instructis, nari- 

 bus haud tubiforaiibus; pedibus tetradactylis, digitis tribus anticis 

 palmatis vel lobatis,balluce parvo sed normali, lobato; tarso enor- 

 miter compresse-, margine anteriore acuto, loDgitudine duplioi 

 digiti medii cum ungue semper breviore; maxillis intus lamellis 

 transversis vel denticulis destitutis; pelvi angnstissima et lon- 

 gissima cum partibus postacetabularibus ossium innominatoruni 

 latissimis planisque, fere verticalibus, ad cristam vel supra cri- 

 stam ossis sacri valde approximatis vel conjunctis, processu cne- 

 miali tibiae autem pyramidiformi saltim dimidio femoris aequante. 



Horn iuiaBaTejrbHmT, ■qeTBipexnajiBia, Enepe^t HanpaBJieHH 

 Tpn nanBoa, KOTopBie nn6o coe^nHeHu iiojihbimii nepenoHKaMn, 

 .thoo OKaÛMaeHH uinpoKiran, Hasp'BsaHHHMH na cycTaBax'B naaBa- 

 TentHi.ii.rn .uonacTAMn; 3a^Hifl rraJierrB xopomo pa3Birrt, cb aor 

 nacTBio; iraiocHa HeoÔBraaâHO cacaTa'cB 6okob , b, cb octpbim'b ne- 

 pep;HiiM r B KpaeM-B, Bcerj;a Kopo^e sbohhoû ^jihhh cpe^Haro rraJiBua 

 cb KorTeM"B; Maxn pa3Birai; H03spn He ysJiHHHeHBi bœ. Tpydo^Kn; 

 Ha BHyTpeHHelt noBepxHOCTH p-emyroaro Kpaa ^ejiiocTeË e$tt> hh 

 napajiJiejiBHHXi> miacTHHOK'B, hh 3y6n,OBt. — Ta3-B HeoÔBiqaîiHO 

 ysoicB n s-nnHeH'B; nocraueTaôyiiapHaa *iacTB 6e3BiMHHHBix r B ko- 

 CTeâ HMseTrb bu^-b mnpoKoû, naocKofl, croameiï no^Tn BepTii- 

 Ka.iBHO naacTHHKn, KOTopaa jihôo cxoxirrca cb TaKofl sce mtacTHH- 

 koh spyroû cTopoHH, jrn6o OTsfeiaeTCH otb Hea tohkhm'b KaifB 

 jie3Bee Hoaca rpeÔHeivrB Kpecrna; icpecremB cTnjieBnsHBifi. BepxHiû 

 (KHeMiaaBHBin) OTpocTOKt roaeHH HeoÔBraaîÎHO jymHeH'B, nnpaîm- 

 3;a.iBHOË cbopMBi, ho Kopo^e nojioBUHH sjihhh 6e,npeHoîï koctii, 

 o6pa3yeTCH h HapyacHHM'B, n BHyTpeHHHM-B KHeMianBHHim rpeôem- 

 Kaiun, Ha^nHaiommincH no^Tn oi"B cpesnHH ranemi. 



XapaKTepMCTHKa. Bo,naHBia, sobojibho njioxo neTaromia (Centro- 

 pélma micropterum coBepmeHHO yTpaTHJia ciiocoÔhoctb jeTaTB) n 

 esBa xo^amia no 36mji'b nTnnt>r. IlTeHn,Bi BEiaymiaiOTca b'b nyxo- 

 Bn^HOMT, napas'B coBepmeHHO pa3BHTHiNni n jiotyt'b TOTiacB ace 



n.TiaBaTB H OTBICKIIBaTB KOpiTB. KjIIOB'B npflMOH, 3aOCTpeHHBlH, no- 

 KpBITt Cn.lOniHBIM'B pOrOBBIM'B nOKpOBOSTB. HorH OTO^BHHyTH 



o^eHB ^ajieKO K3a;nn, "qeTBipexnajiua, ("iojiBmou na.neirB Hanpa- 

 B.ieH'B K3a^H, cb nonacrtio; ira^ Tpex'B nepe^Hiix'B na.iBn.eB'B ca- 

 mbiîî ^jihhhbih HapyaiHLin (leTBepTBift), ohh coe^nHeHH .tiuôo no.n- 



