OWSIANKA. 
787 
the dorsal tin and the tip of the snout to measure more 
than 86 % ol that between the anal tin and the same 
point, as is generally the case in the Bleak, Bream, 
White Bream, and “Ziege”. The fry of the Rudd and a 
few males of the same species, however, approach the line 
of demarcation very closely; but Leiicaspius is easily dis- 
tinguished from all the Leuciscines that have scales of 
moderate or some considerable size, by its incomplete 
lateral line, which seldom extends behind the tip of the 
pectoral tins. Only one species of the genus is known. 
THE OWSIANKA (sw. groplojan «). 
LEUCASPIUS DELINEATUS. 
Fig. 195. 
Coloration silvery like 
slender, hooked 
that of the Bleak, with a steel-blue band along the sides of the body. Pharyngeal teeth 
at the tip, pectinated , and, set in one or two rows: 5 — 4(5) or 1(2), 5 — 4, 1(2). 
’ *-■ w 
a b 
Fig. 195. Leucaspius deline atus , natural size, taken at Landskrona on the 4th August, 1871 by Lilljeborg, together with the left 
pharyngeals magn. 5 diam. a and b as in the preceding figure. 
R. hr. 
D. 1 ; 
8 
A. 
11—13' 
P. 
12 — 14’ 
V. 
1 ( 2 ) 
C. x + 1 + (16)17 + 1 +x; L. lat. sqv. 44 — 50 (7 — 13 perfor.); 
L. tr. 12 — 13; Vert. 36 c . 
Syn. Aphya ( Mutterloseken ), Schonev., Ichthyol. Slesv. Holst., p. 16. 
Squalius delineatus, Hckl, Rassegyers Reisen, vol. I, pt. 2, 
p. 1041; Hckl, Kn., Siisswasserf. Ustr. Mon., p. 193; Sieb. 
( Leucaspius ), Siisswasserf. Mitteleur., p. 171; Gthr, Cat. 
Brit. Mus., Fish., vol. VII, p. 319; Lillj., Ofvers. Vet.- 
Akad. Fork. 1871, p. 815, tab XVII, A; Malm, Obeys , Boh. 
Fn ., p. 568, not.; Fedders., Naturh. Tidskr. Kbhvn, ser. 3, 
vol. XII, p. 90; Bncke, Fiscli., Fischer., Fiscliz. 0 ., W. 
Preuss., p. 131. 
Leuciscus stymphalicus , Cuv., Val., Hist. Nat. Poiss., vol. 
XVII, p. 295, tab. 498. 
Aspius owsianka, Czernay, Bull. Soc. Natur. Mosc., tom. 
XXIV, part. 1, p. 281, tab. VII; pt. 2, p. 259; Maslow., 
ibid., tom. XXVII, pt. 1, p. 442. 
Leucaspius abruptus, Hckl, Kn., 1. c., p. 145; Dyb., Cypr., 
Livl., p. 147 + Owsianka Czernayi, ibid, et p. 140. 
The Owsianka is one of the smallest Cypri- 
noids. Its usual length is about 6 — 8 cm., measured 
to the tip of the caudal lobes, the former in the males, 
the latter in the females. Sometimes, however, ac- 
cording to Benecke, it may attain a length of 12 cm. 
Its size is thus equal as a rule to that of the Minnow, 
but the form of its body is quite different, being more 
compressed, like that of the Bleak, which it also re- 
sembles in coloration. 
The body is well proportioned, with regular dorsal 
and ventral curves, the latter being the sharper. The 
greatest depth of the body is about 20 — 22 % of its 
a Lilljeborg, 1. c. 
6 Sometimes 14, according to Dybowski. 
c According to Maslowsky. 
