ABHA.MIDINICS. 



797 



THE SPERLIN-BLEAK (sw. braxenlo.ian). 



SIM IILLN US BIPUN'CTATUS. 



Fig. 197. 



Scaler ill fill' hitcnd line ahoiit 50 {44 — ');J). Ilramlicd nii/s in tlic anal fin ahout 15 {14 — i6'). Lateral line 



tncluilfd hctu-een two black streaks: sides also marked, with scattered black sjjots. Pharyngeal teeth compressed, 



/looked at the tip, with smooth masticator!/ surface, and set in two rows; 2, 5{4) — 4{5), 2. 



Fig. 197. Hpirliniis bipunctatiis, uatiiral size. From the Lake of Zurich, n. left inferior pharyngeal seen from above, b, same bone seen 

 from witliont, both figures twice tlie natural size; f, the midrlle tooth in the inner row, tlirce times the natural size. 



3 3 



B. br. 3; D. - — -; A. 



7—8 14—16" 



Syn. Vijpi-iiiu.t bipiinctatus, Bl., Fisck. Deutschl., pt. I, p. 50, tab. 

 VIII, tig. 1 ; Agass. (Aspius), Mem. Soc. Sc. Nat. Neuch., 

 torn. I, p. 38; Cuv., Vai.. (Lenciscus), Hist. Nat. Poiss., 

 tc.m. XVII, p. 259 (+Lenc. Baldneri, p. 262); BoNAr. 

 (A/bui-nus), Cat. Met. Peso. Eur., p. 33; Gthr {Abramis), 

 Jahresb. Ver. vaterl. Naturk. Wiirtemb., Jahrg. IX, p. 307 ; 

 HcKL, Kn. {Albiirmis), SUsswasserf. Oestr. Man., p. 135; 

 Dyb., Cypr. Livl., p. 161; Sieb., .Siisswasserf. MitteUur., p. 

 163; Blanch., Poiss. d. eau.v douces Fr., p. 371; Feddersen 

 {A.<spius), Naturh. Tidskr. Kbhvn, ser. 3, vol. XII, p. 91; 

 Bncke {Alburnus), Fiscli., Fischer., Fischz. 0., IF. Preuss., 

 p. 128; Fatio {Spirlinus), Fne Vert. Suisse, vol. IV, p. 392: 

 LiLU. (Abramis), Sv., Xorg. Fn., Fisk., vol. Ill, p. 322. 



The Sperliii-Bleak never exceeds the average size 

 of the common Bleak. According to Fatio it may 

 attain in Switzerland a length of lo cm.; but the 

 ordinary length of adult specimens, including the whole 

 caudal fin, lies between 10 and 13 cm. 



In form this species is deeper than the preceding 

 one, and consequently shows greater lateral compres- 

 sion, the greatest depth being at least about '1^'', the 

 least depth about '/,i'', of the length of the body to 

 the end of the middle caudal rays, and the greatest 

 thickness (across the opercula) at most about ^4, on 

 an average 3(5 ?4, of the greatest depth. 



In most other respects it resembles the Bleak; 

 but the mouth does not ascend so sharply, and the 



according to F.vno. 



" Sometimes 17, according to Fatio; 

 , 8-10 



3- 



■■ According to GL'NTBEB and Fatio. 

 ■* 24'7 % — 26'7 % according to our measurements. 

 ' 8"8 % — 9'4 % according to our measurements. 



cording to Gi'XTHEK. 



