318 
ACTINOPTERYGII. 
Genus ASPIUS, Agassiz. 
[Mem. Soc. Sei. Nat. Neuch&tel, vol. i. 1835, p. 38.] 
As Rhodeus, but pharyngeal teeth hooked and in two soru > . 
lateral line complete, extending along the middle of the side of t e 
tail. 
The extinct species mentioned below are merely referred to Asp 1 
rather than to Rhodeus on account of their slendor proportions. 
Aspius gracilis, Agassiz. 
1818. Cyprinus bipunctalus ?, II. 1). de Blainville, Nouv. Diet, d H‘ 
Nat. vol. xxvii. p. 377. . , 
1832. Aspius gracilis, L. Agassiz, Neues .Tahrb. p. 134 (name on yb 
1835-39. Aspius gracilis, L. Agassiz, Poiss. Foss. vol. v. pt. ii. P' ° ’ 
pi. lv. figs. 1-3. 
Type. Nearly complete fish ; olim Lavatcr Coll., Zurich 
A very small species, attaining a length of about O'l. 
head with opercular apparatus about equal to the maximum 
Length of 
depth 
» i til upuiuuiai appixiaLus duuuu cijuai w 
of the trunk and contained four times in the longth to the base 
the caudal fin. Vertebrae 18 in the abdominal, 16 in the caur ^ 
region ; 13 pairs of ribs. Pelvic fins with 9 rays ; dorsal fin e°n^ 
pletely in advance of anal, with 10 rays, the foremost being a s m ^ 
spine, the second articulated, the others both articulate! a 
divided distally ; anal fin with 15 rays, the two foremost like 
of the dorsal. 
Form, df Loc. Upper Miocene : Oeningen, Baden. 
36121-22. Fine specimen O'l in length, in counterparty ^ ]g59. 
P. 3864. Smaller specimen, labelled by Agassiz. Ennislcdlen 
Aspius minutus (Winkler). g 
1861. Chondrostoma minutum , T. C. Winkler, Descript. I °t " x j v j, 
d'Oeningen (Natuurk. Verhandl. Holland. Maatsch. [-J v0 
p. 37, pi. iv. fig. 12. 
Type. Nearly complete fish ; British Museum. larye r 
A smaller and more slender species than A. gracilis, w 1 . 
head, only 9 rays in dorsal fin, and apparently 13 rays in an' 
otherwise similar. 
Form, df Loc. Upper Miocene : Oeningen, Baden. 
42789. Type specimen, in counterpart. ^ 
Breda Coll' 
