CEM. ÂCIPENSERIDAE.-PSEUDOSCAPHIRHYNCHUS. 
309 
Pseudoscaphirhynchus Nikolski. Ann. Mus. Zool. Pétersb., Y, 1900, p. 257 
(rossiJcowi — hermanni). — Berg. Zool. Anz., XXVII, 1904, p. 667. — EEPrx 
(Berg). Pu6ei TypicecTaHa, 1905, CTp. 24. 
Kessleria Jordan. Guide to the study of fishes. N. Y., 1905, II, p. 20. 
Hemiscaphirhynchus Berg, subgen. nov. ( Jcaufmanni ). 
Xboctoboh CTedeaeicn KopoTOKa>, Taica> hto BepxyinKa aHaan- 
Haro njiaBHHKa XBaTaeTa, h«jih noaTH XBaTaeTa» æo Haaaaa xbo- 
CTOBoro. Xboctoboh GTe6ejieK r b oaeHB Ma.no ynjioii];eHa>, ero TOnmiHa 
y KOHii;a cnHHHoro naaBHHica e,n,Ba 6ojn>me ero blicotli btb 9TOMa> 
ace M'icT'Ê. Phæh acyaeica, TBHyTca ;o,o KOHija T^aa, He caHBaacB 
Meac,n;y co6oh, He o6pa3ya nam^upH; Ha ôoicaxn xBOCTOBoro ct e6aa 
HaXO^HTCH HeÔOJIBHlia pa3p03HeHHHH naaCTHHKH. XBOCTOBaH HHTH 
ecTB nan OTcyTCTByeTH. ^Ka6epHHii tlihhhkh aaHn;eTOBHj;HH me 
naacTHHHaTH. KaKa> BepxHBB, Taxa» h HnacHaa rydur ÆByaonacTHLiB, 
HHacHBB — chhbho npepBaHa. OnepKyaBpHHB acaôpti oaeHB caa6o 
pa3BHTHt nan 3aHaTOHHEr. IlaaBaTeabHHH ny3Hpt Maaa» nan 3aaa- 
ToaeHH. Tassa oaeHB Maan (axa ^iaMeapn 6 —16 pa3T> bh Meac- 
raa3HHHHOM r b npoMeacyTK'i). Piao Meac^y pa^aMH acyneicn noKpbiTO 
3epHHniKaMH, a He naacTHHKaMH. Yemcn He 6axpoMuaTLi. Kocthhoh 
aynT> rpy^Horo nnaBHHKa cnadn, ho Bce ace cnaBH'Êe pa3BHTTb ? 
h'Êmh y p. Scaphirhynchus. Pe6pa MHoroHHcaeHHU, 20 eih doa'ie 
napa>. Claviculae, cxo^hcb bm'Ict^, o6pa3yiOTT> ocTpuH, HanpaB- 
aeHHBii Bnepe^a, BiiCTymb. 
BaH3Kin po^a, Scaphirhynchus Heck. xapaKTepH3yeTca oaeHb 
^hhhhhmh xboctoblimh CTe6e.nbKOMa>, HinpHHa Koero 6oai>me ero 
bhcotli; KpoM'É Toro xb. CTe6. o^Ta>, KaKa» naHH;HpeMT>, kocth- 
hhmh naacTHHKaMH. }Ka6epHHB thhhhkh B r Êepoo6pa3HH. KaKa> 
BepxHHH, TaKa, h hhechhh ry6u HeTLipexaonacTHLia, hhjkhhh— 
caa6o npepBaHa. OnepKyaapHaB aca6pa noHTH cobcIjmt, pe^yi^H- 
poBaHa. IlaaBaTeaBHLiH ny3Lipb Beanicn, dnctus pnenmaticus 
xopomo pa3BHTa». T-Èno MeacÆy pa^aMH acyaeKa> h Ha 6piox/i no- 
KptiTO koctbhlimh naacTHHKaMH nan roaoe. Y chkh 6axpoMHaTHe. 
Taa3a cpaBHHreaBHO BeaHKH. Pe6epa> 10 — 21 napa>. IIo nepe;n- 
HeMy Kparo cxo^bhi;hxcb claviculae HM^eTCH rayôoicaa Btip'ÈSKa. 
Ba> p. Pseudoscaphirhynchus Tpn bh ja : 
a. Pujio ct» 2 — 4 ocTpuMH nmiiaMH Ha kohij'Ê. ÜJiaBaTejiLHLiH nyaupb 
% cpaBHHTejibHo xoporao pa3BHTX, coe^HnemE» ex nnm;eBOAOMX ihh- 
po khmx KaHajiOMx. Xboctoboh CTeôejieKx cjierKa npnnjiiocHyTx. 
>Ka6epHHH tbdihhkh n.iacTHHuaTUfl, ex 2 poHcuaMH, rhcjiomx 16. 
XiiOCTOBan hhti> Bcer,n;a ecTB. IIIhtkh Ha to^obê hcho paaJiaqHMiJ, 
He noKpuTLi ko ace il. (Subg. Hemiscaphirhynchus nov.). 39. P. kaufmanni . 
