SEMIONOTIDiE. 
75 
1891. Lepidotus ragazzomi , A. de Zigno, Mem. R. Accad. Lincei, [4] 
yoI. yii. p. 8, pi. ii. figs. 1, 2. [Nearly complete fish ; University 
of Padua.] 
1892. Lepidotus (Colobodus ?) latus, F. Bassani, Mem. Soc. Ital. Sci. 
[3] vol. ix. no. 3, p. 24. 
Type. Portion of fish : Palaeontological Museum, Munich. 
A species attaining a length of about 0*35; general proportions, 
teeth, and external ornamentation of bones as in C. ornatus. Scales 
smooth and without serrations, except in the lower half of the 
abdominal flank, where they are often marked with feeble oblique 
striations and pectinated at the hinder margin ; principal flank- 
scales considerably deeper than broad. 
Form. $ Log. Upper Triassic : Tyrol; Italy. 
21377. Portion of trunk, with fragment of head ; Seefeld, Tyrol. 
Purchased , 1847. 
P. 1104, P. 3622 a. Imperfect head and abdominal region of smaller 
fish, in counterpart; Seefeld. 
Egerton and Enniskillen Colls . 
P. 604. Caudal region, showing anal and caudal fins, described by 
Egerton (loo. cit. 1843) as the type specimen of Semionotus 
pentlandi ; Giffoni, province of Salerno, Italy. 
Egerton Coll. 
P. 602. Very imperfect fragment of opercular apparatus and flank- 
squamation probably pertaining to this species, described by 
Egerton (loc. cit. 1843) as the type specimen of Semionotus 
pustidifer ; Giffoni. Egerton Coll. 
P. 1549. Portion of trunk of a small fish, perhaps young of this 
species ; Seefeld. The principal flank-scales are extremely 
finely serrated on their hinder margin, and the specimen 
bears the MS. name of Semionotus tenuiserratus, Egerton. 
Egerton Coll. 
Scales of an undetermined species of Colobodus have been recorded 
from the Rhaetic of Aust Cliff, near Bristol (M. Browne, Rep. Brit. 
Assoc. 1891, p. 645), and the undermentioned scale appears to be 
referable to this genus :— 
P. 7405. Rhombic scale 0*007 in depth, with a few superficial 
pittings tending to oblique elongation and at least four 
long slender digitations obliquely directed downwards at 
its postero-inferior angle: Rhaetic Bone-bed, Aust Cliff. 
Egerton Coll. 
