288 
CEM. AciPEXSERlDAE. -AciPERSER MEDIROSTRIS. 
OmicaHie. Phjio TpeyrojiBHoe, 3aocrpeHHoe, to 6ojrâe, to MeH'fce 
y^HHeHHoe. Ychkh HeMHoro He xBaTaiOTB no pTa. Hhhchhh ry6a 
yMppeHno npepBaHa. Ilon'i» cnnHHBiMH acyHKaMH ohhhb paj^rb 6 ojib- 
IHHXB 3B r È3^ I iaTHX r B IIJiaCTHHOKB, a, KpOMÏi Toro, OHeHB MHOrO TaKHXB 
ace Me.nKHX'B n«nacTHHOK r b n 3epHmneKB; nonB 6 okobhmh acynKaMH 
HM'felOTCH TOJIBKO 3epHBIIHKH. II^HTEH TOJIOBIJ COnpHKacaiOTCH npyrB 
cb npyroMB He técho (KaKT> y A. gïdd.). Bcft hj;htkh Ha roJiOBp h 
jKyHKH Ha T-ÉJi'Ê p'ÉBKO paniajrBHo 3epHHCTH. IlepBaH cniHeafl 
acynita He Hnace BTopofi, ho rnnpe en; caMBiH bbicoklr cnHHHbiü 
acynioi 5-an h 6-aa; nocjrÉÆHHH cnHHHan acynica bb l l / 2 pa3a 
^jiHHH'ie npennoc.jrÈHHeH. IIpenB ciihhhhmb miaBH. 2 Ma«JieHbKHx r b 
njiacTHHKH HenpaBHJiBHOH $opMH h em,e onHa, Haneraioman Ha 
Hanajio D . 3a JD 2 KpynHErxB h 2 MajieHBKHXB miaeTHHKH. IlepBHH 
cJ>yjibKpi)i xBOCTOBoro n«naBHHKa yMppeHHO BejiHKH. IIpenB àHajiB- 
hbtmb njiaB. 4 6ojibihhxb 3epHHCTEixB miacTHHKH, pacno.Jio}KeHHBiXB 
o^Ha 3a npyron. 3a aHajiBHBmB n«naBH. 4—5 MacneHBKHXB, Henpa- 
biljibho pacnojixmeHHBixB njiacTHHOKB. Hanano aHaÆBHaro miaBH. 
no^Tb 3a,n;HHMT, kohii;omb cnHHHoro. Tpydubie nmen. Kopomie, saitpyr- 
aeHHbie, uxb nepeuü Jiym nopomom, crn fo, nonmu tuôom. Interclavicula 
ecTb. H3M^pems cm. Ha CTp. 289, cpaBHeHiH npHBeneHH 
H3M^peHiH h npyrnxB aMepiiKaHCKHXB oceTpoBB Hamero My3en. 
^JiHHa KpynHaro 3K3. (2) 2050 mm.; ohb b'Êchji'b 3 ny.ua 
29 cJ>yH. h 3aKJH0Hajrc> okojio nojrynyna HKpu (sto ohhhb H3B Kpyn- 
HpHIHHXB 3K3eMnJHipOB r b). 
OicpacKa 3 khbbixb 3K3eMnjijïpoBB TeMHO-OJiHBKOBaH, 6pioxo Rcen- 
TOBaToe (II. IQmh^t^); aMepüKaHii,H 30ByTB 3Toro oceTpa ,,3ejie- 
HHM'L Lc (green sturgeon). 
CpaBH. 3aMtïKM. II. K). IIImh,zi,tb (1904) BbiCKa3ajiB npe.nno.Jio- 
caceme, hto A. mihadoi , pacnpocTpaHemmH no a3iaTCKOMy nofiepeacBio 
C r ï>B. Tnxaro OKeaHa, ToacecTBeHB cb A. medirostris , hsb^cthrimb 
cb aMepHKaHCKaro no6epeacba Toro ace OKeaHa. CpaBHHBB onHcaHin 
h H3o6paaceHiH A. medirostris cb Hamma 3K3eMnjrapaMH A. mïlcadoi, 
h npnxoHcy kb yô^acnemio, hto 3th <|)opMBi hhh^mb npyrB otb 
H pyra He OTjmnaiOTCH. 
A. medirostris saM'ïjnaeTB co6ofo bb Thxomb OKean'fe A. sturio , 
OTB KOTOparO OTJIHHaeTCH 6oJr£e CHJIBHO 3epHHCTbIMH mjHTKaMH 
rojiOBH h TâKHMH ^ce acyHKaMH, oneHb cnaôbiMB mnnoMB rpy^Horo 
njiaBHHKa, npncyTCTBieMB BB^sn^aTHXB (a He poMÔonnajibHbixB) 
njracTHHOKB Ha t , éji , ê h He conpHKacaiom,HMHCH m;HTKaMH tojiobh. 
