CYPRIXID^. 
307 
P. 9420. Small distorted fish. Purchased.. 
35525-26. Two fragmentary specimens. Parcliased, 1859. 
42798. Distorted specimen. Van Breda Coll. 
Leuciscus papyraceus (Bronn). 
1828. Cuprinus papyraceus, H. G. Bronn, Zeitschr. f. Mineral, vol. i. 
p. 380, pi. iii. fig. 9. 
1832. Beuciscus papyraceus, L. Agassiz, Neues Jahrb. p. 132. 
1833. Leuciscus cephalon, Zenker, iSTeues Jahrb. p. 395, pi. v. figs. 3-5. 
1835-39. Leuciscus papyraceus, L. Agassiz, Poiss. Foss. vol. v. pt. ii. 
p. 31, pi. Ivi. figs. 1-4 (?5). 
1839. Leuciscus cephalon, L. Agassiz, ihid. p. 32. 
1848. Leuciscus papyraceus, C. G. Giebel, Fauna der Vorwelt, Fische, 
p. 110. 
1854. Leuciscus papyraceus, F. G. Troschel, Yerhandl. naturw. Ver. 
preuss. Bheinl. vol. xi. p. 19, pi. ii. fig. 2. 
Type. Imperfect fish; olim Bronn Collection, Heidelberg. 
A very small species with comparatively delicate skeleton. 
Length of head with opercular apparatus exceeding the maximum 
depth of the trunk, which is contained between four and five times 
in the total length of the fish to the base of the caudal fin. About 
36 vertebrae, half being caudal; 14 pairs of ribs. Pelvic fins, with 
about 9 rays, arising opposite the origin of the dorsal, which also 
comprises 9 or occasionally 10 rays, the foremost being a short 
spine, the second articulated, the others both articulated and 
divided distally ; anal fin similar to dorsal, arising much nearer to 
pelvic pair than to caudal fin. 
Form. ^ Log. Upper Oligocene: Germany; (?) also Bilin, 
Bohemia. 
P. 7666. Fine specimen 0*1 in length, associated with fragment; 
Lignite, Rott, near Bonn. Purchased, 1895. 
33297 a, 33499. Seven specimens ; Rott. Purchased, 1858. 
P. 1826. Three small specimens ; Rott. Egerton Coll. 
869. Imperfect small specimen ; Rott. Purchased. 
P. 1825. Three diminutive specimens, labelled ’‘^Leuciscus cephalon, 
Zenk.” by Agassiz ; Lignite, Linz on Rhine. 
Egerton Coll. 
X 2 
