CEM. ÂCIPENSERIDAE.-ÂCIPENSER RUTHENUS. 239 
Acipenser ruthenus x A. güldenstâdti. 
üomIjcb CTepjiR^H h oceTpa. (Ta6a. VII). 
? Acipenser (SterJetus) liélenae Düméril. Hist. nat. poiss., II, 1870, p. 258 
(Russie; sc. lat. 50—52). 
Acipenser brandti (non Günther) Eeppb (Berg). Tp. CapaT. O. Ect., IV, 
b. 2 (1903), 1905, CTp. 281 (Saratow). 
„ocempoeuü Kepu.ub" Eajkehobt» (Bashenow). B^cth. Ph 6., 1906, CTp. 6, 
$Hr. 4a, 6, 7 (Simbirsk). 
„ocempo6uü iuum u üokpobckih (Pokrowskij). Phôojiob. 6acc. Bojirn, V, 
1909, CTp. 21 (Karaa, Wjatka). 
3k3. 3ooti. My3. Ak. H. 13647. in. Caspium. an. Eopb 1852. 
13650—2. m. Caspium? „ „ (3). 
11826. Kasan (exuv.). 
13648 — 9. Nishni-Nowgorod. Papo3hht. 1880 (2). 
13640. incertae sedis. C'êbepuob'b. 
15073. Saratow. A. Ckophkobb. 1903, 10. VI (250 mm). 
delta fl. Wolga (Mogilnaja). A. Ckophkobb. 1903, 22. VIII 
Î (260 mm), 12. VIII. (215 mm). 
0Ta nOM’flCB BCTpfeaeTCR HO pl^KO. MoHCHO nO^M’ÊTHTB BCÜ 
nepexo^u Meac^y CTepjnmBïo h oceTpoMB. 
OnncaHie 9K3eMjijiRpoB r B (cm. TaKace Ta6a. Ha CTp. 240): ^N113648. 
ycHKH caa6o 6axpoMqaTEie, noqTH ÆocTHraiomie pTa. Meac^y ih;ht- 
KaMH pa36pocaHBi MeaKia 3epHBimKH. Hnacnaa ry6a yM^pemio 
npepBaHHaa. Bepxnaa aeaiocTB cb chjibhoh BBip43KOH. IlepBaa 
cnHHHaa acyana caMaa 6oaBmaa bb pa^y. Parao Tynoe. Ilpe^'B 
aHaaBHBiMB) OTBepcTieMB o^Ha naacTHHKa, 3a hhmb ^B-fl bb npo-, 
;hohbhomb paa;y: o^Ha MeHBmaa (nepeftHaa), a 3a Heâ OoaBmaa. 
KaKB 3a A , TaKB nepe^B T > h 3a Z), hIjtb naacTHHOKB. IïepBaa 
ÿyaBKpa (7, KaKB Ha chhhhoh, TaKB h Ha ôpionraoâ CToponfl, h© 
yBeanaeHa. 
M 13649. Ychkh He 6axpoMaaTBie (tojibko Ha oæhomb 3aM4THBi 
3aHaTOHHBia 6axpoMKn), hxb 3a,a;HiH KOHen;B ÆOBoaBHO ^aaeico otb 
pTa. BepxHaa aeaiocTB cb caa6on BErpl^KOH. HnacHaa ry6a caa6o 
npepBaHa. PBrao Tynoe. Bb ocTaaBHOMB -—KaKB CTepaa^B. 
Jvd 13650. Ychkh 6e3B 6axpoMOKB, hxb 3a^HiH KOHeijB æo- 
BOaBHO ÆaaeKO otb pTa. HnacHaa ry6a chjibho npepBaHa. BepxHaa 
neaiocTB cb^obo^bho 3aM r flTHOH BBip43KOH. T^ao cnaomB noKpBiTO 
MeaKHMH rpeôeHqaTHMH naaCTHHKaMH. 3a aHaaBHHMB OTBepcTieMB 
bb npoAoaBHOMB pa^y 2 MeaKHXB naacTHHEi -+- 1 KpymiaH 
-+- 1 KpynHaa h, HaKOHeijB, o^Ha naacTHHKa npe^B aHaaBHHMB 
naaBHHKOMB. 
