764 
SCANDINAVIAN FISHES. 
THE IDE (sw. iden). 
LEUCISCUS IDUS. 
Plate XXXII, fig. 1 and Plate XXXV, fig. 1. 
Scales in the lateral line about 57 (55 — < !O a ). Branched rays in the dorsal fin 8 b . Least depth of the peduncle 
of the tail more than 43 % of its median length , hut as a rule somewhat less than the length of the base of the 
dorsal fin. Outer (lower posterior) margin of the anal fin concave. Pharyngeal teeth hooked at the tip or straight , 
with terete and smooth , indistinct masticatory surface: 3 , 5 C — 5, 3. 
Fig. 190. 
Pharyngeal bones and pharyngeal cartilage of Leuciscus idus , natural size, a, b, and c as in the preceding figure; 
d, tlie last (hindmost) tooth in the inner (larger) row, seen from behind. 
JR. hr. 3; I). 
8 b 
C. x + 1 + 17 + 1 + x; 
Vert. 46 — 47-". 
A. 
Lin. 
; P. 
10 — IP 
lat. 55—60" 
— 1 — ; V. — — 
17 — 18 e 8— 
r 8—9^ 
L. transv. 
4—5 
9’ 
1 ; 
/ Syn . Capito fluviatilis i lie, quem Jesen appelant Germani quidam: 
nos differentia caussa coeruleum cognominemus licet, Gesn., 
Hist. Anim., lib. IV, Paralip., p. 9 + Capito fluviatilis subruber, 
quem Germani orfum appellant, ibid., p. 10. Cyprinus iride 
sublutea; pinnis ventralibus anique rubris, Akt. Ichthyol., 
Gen., Pise., p. 5; Syn. Pise., p. 14; Descr. Spec., Pise., p. 
6 + Cyprinus Orfus dictus, ibid., Syn. Pise., p. 6 4- Cypr. 
cubitalis, pinna ani ossiculorum quatuordecirn, ibid., p. 7. 
Cyprinus pinna ani ossiculis tredecim rubra, Lin. Fn. Suec., 
ed. I, p. 121. 
Cyprinus Idbarus, Lin., Syst. Nat., ed. X, tom. I, p. 324; 
Retz. Fn. Suec. Lin., p. 356 = Cyprinus microlepidotus, 
Ekstr. Fiscli. Sclieer. Morka , p. 18, tab. II. 
Cyprinus Idus, Lin., Syst.., 1. c.; Retz., 1 . c., p. 358; Ekstr., 
Vet.-Akad. Handl. 1830, p. 146, tab. Ill; Nilss., Prodr. 
Iclitliyol. Scand., p. 27 ; Ekstr., v. Wright, Skand. Fisk., 
ed. I, p. 59, tab. XI; Cuv., Val. ( Leuciscus ), Hist. Nat. 
Poiss ., vol. XVII, p. 228; Kr., Damn. Fisk., vol. III. pag. 
447; Lillj. (Cyprinus), Vet.-Akad. Handl. 1850, p. 305; Nilss. 
(Leuciscus), Skand. Fn., Fisk., p. 306; Sundev. (Cyprinus), 
Stockh. L. Hush. Siillsk. Handl., H. 6 (1855), pp. 81 et 
170; Vet.-Akad. Handl. 1855, p. 15, tab. Ill, fig. 7 — 11; 
Lloyd, Scandinavian Adventures, vol. I, p. 55 cum fig. (Ide); 
Lindstr. (Leuciscus), Gotl. Fisk., Goth L. Hush. Siillsk. 
Arsber. 1866, p. 17 (sep.); Nystr., laktt. fn. Jemtl. Vatt. 
(disp. Ups. 1863), p. 4; Gthr, Cat. Brit. Mus., Fish., vol. 
VII, p. 229; Coll., Fork. Vid. Selsk. Chrnia 1874, Tillaegsh., 
p. 181; ibid. 1879, No. 1, p. 96; Olss., Ofvers. Vet.-Akad. 
Forh. 1876, No. 3, p. 130; Malm, Gbgs, Boh. Fn., p. 562; 
M5b., Hcke, Fiscli. Osts., p. 108; Mela, Vert. Fenn., p. 
328, tab. X; Reut. et Sijndm. Finl. Fisk., tab. XIII; Lillj., 
Sv., Norg. Fisk., vol. Ill, p. 207. 
Cyprinus Orfus, Lin. Syst., 1. c.; var. hujus speciei, vide 
Hci<l, Kn., 1. c., p. 150 + Idus miniatus, p. 151. 
Cyprinus Jeses , Lin., Syst., 1. c., p. 325 ; Bl., Fische Deutschl., 
part. I, p. 45, tab. VI; Cuv., Val. (Leuciscus), 1. c., p. 160; 
Mor. (Idus), Hist. Nat. Poiss. Fr., tom. Ill, p. 417. 
Idus melanotus, Hckl, Kn., Siissivasserf. Oestr. Mon., p. 147; 
Dyb., Cypr. Liu., p. 141; Sieb., Siissivasserf. Mitteleur., p. 
176; Mgrn, Finl. Fiskfn., p. 45; Bncke, Fisch., Fischer., 
Fischz. O., W. Preuss., p. 133; Grimm., Fish., Hunt. Russ. 
Wat., p. 14. 
a In exceptional cases 54 or 61. 
b In exceptional cases 7 or 9. 
c According to MObitjs and Heincke sometimes 2, 5 or 4, 5, the latter numbers being also given by Ekstrom. 
d In exceptional cases 9 or 12. 
e In exceptional cases (young) 16. 
/ Sometimes 10, according to Heckel and Knee. 
g Sometimes 45, according to KrGyer, or 48, according to Lilljeborg. 
