787 



the tlorsiil tin antl the tij) of the snout to nicasmv more of (leiiiiireiitioii very elosely; l)ut /^e«''rt.S'^J<«.s is easily dis- 



thaii 86 "o of tliat l)etweeii tiie ana! fiii ami the sanu? tiiiguished from uU tiie Leucisciiies tliat have scales of 



point, as is generally the ease in tlie IMeak, llreani, nioflerate or some considerable size, by its incomplete 



White Bream, and "Ziege". The fry of the Htidd and a ' lateral line, which seldom extends behind the tip of the 



few males of the same species, howe\'er, approach the line pectoral fins. < hdy one species of the genus is known. 



THE OWSIANKA (sw. groplojan"). 



LEUCASPU'S DELLXE.VrUS. 



FiR. 105. 



Coloration silri'i-fi like that of the Bleak, iritli a stivl-lilae IjoikI alaiii/ the sides of the Ijodi/. J'hari/nfjcal teeth 

 slender, hooked at the tip, peetiixtted, and set in our or tivo roa-s: 5 — 4{')) or 1{:J), 5 — 4, 1{2). 



FiK. 195. Leucasphis delineatus, natural size, taki-ii at Laiidskrona on tlie 4th August, 1871 by LlLLJEUoKii, tcgetlier witli the left 

 pharyngeals magu. 5 rliani. n and h as in the preceding figure. 



U. .r + 1 + (16)17 + 1 +,r 

 L. ti: 12 — 13: Vert. S6'. 



. -'—: P. -i-: V. i^; 

 11 — IS' 12 — 14 7—8 



L. lat. s.jii. 44—50 (7—13 perfor.); 



Syii. Aphi/a {Mutterloselcen), Schonev., Ichthi/ol. Slesv. Hoist., p. 16. 

 Sgtialin.i delineatus, HoKi, Uusseggers Reisen, vol. I, pt. 2, 



p. 1041; HcKL, Kn., Susswasserf. Ostr. Mon., p. 193; Sieb. 



(Leucasphis), Siissivasserf. Mittelenr., p. 171; Gthr, Cat. 



Brit. Mus., Fish., vol. VII, p. 319; Lilu , Ofverfs. Vet.- 



Akad. F6rh. 1871, p. 815, tab XVII, A; M.4LM, Ghrjs, Boh. 



Fn., p. 568, not.; Fedders., Naturh. Tidskr. Kbhvn, ser. 3, 



vol. XII, p. 90; Bncke, Fisch., Fisrlwr., Fisr},:. 0., W. 



Prettss., p. 131. 

 Leaciscus stymphaliciis, Cuv., Val., Hist. A'ai. Poiss.. vol. 



XVU, p. 295, tab. 498. 

 Aspitis olosianka, Czernat, Bull. Soc. Natur. Mosc, toni. 



XXIV, part. 1, p. 281, tab. VII; pt. 2, p. 259; Maslow., 



ibid., torn. XXVII, pt. 1. p. 442. 



Leucaspius abraptus, HcKL, Kn., 1. c., p. 145; Dvb., Vypr., 

 Livl., p. 147 + Owsianha Ccernai/i, ibid, et p. 140. 



The Owsianka is one of the smallest Cyjn'i- 

 noids. Its usual lengtJi 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 Beneckk, it may attain a length of 12 cm. 

 Its size is thus e(]ual 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 ])ody 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 



" LiLLJEBOKG, 1. C. 



' Sometimes 14, according to Dybowski. 

 "■ According to M.\slowskt. 



