172 
ACTINOPTERYGrll. 
squamation being exhibited almost entirely in impression., 
it is difficult to determine with certainty whether or not 
the scales are serrated. Sharp Coll. 
Ophiopsis lepturus (Bellotti). 
1857. Pholidophorus lepturus , C. Bellotti, in A. Stoppani, Studii GeoL 
e Paleont. Lombardia, p. 429. 
1889. Ophiopsis lepturus , W. Deecke, Palgeontogr. vol. xxxv. p. 122, 
pi. vi. fig. 4. 
Type. Nearly complete fish. 
A small species, about 0 - 08 in length, differing from the typical 
forms in the prominence of the upper caudal lobe and the absence 
of vertebral rings. Length of head with opercular apparatus ex¬ 
ceeding the maximum depth of the trunk and contained about four 
times in the total length of the fish ; maximum depth of trunk 
twice as great as the width of the caudal pedicle. Dorsal fin 
fringed with conspicuous fulcra, comprising 15 rays, arising imme¬ 
diately behind the anterior third of the trunk and occupying about 
half of the back. Scales relatively small, in from 42 to 44 vertical 
series. 
Specimens from the Senckenberg Museum, Frankfurt, are de¬ 
scribed by Deecke. 
Form. Sf Log. Muschelkalk : Perledo, Como, Italy. 
Not represented in the Collection. 
The following species are imperfectly known and not represented 
in the Collection :— 
Ophiopsis altivelis, A. Wagner, Abh. k. bay. Akad. Wiss., math.- 
phys. Cl. vol. ix. p. 657.—Lower Kimmeridgian (Litho¬ 
graphic Stone); Kelheim, Bavaria. [Hinder portion of 
fish ; Palaeontological Museum, Munich.] 
Ophiopsis bellottii , W. Deecke, Paleeontogr. vol. xxxv. (1889), 
' P- 12^: Nothosomus bellottii , P. Bassani, Atti Soc. ItaL 
Sci. Nat. vol. xxix. (1886), p. 37.—Keuper ; Besano, 
Lombard}’ [Nearly complete fish; Milan Museum.] 
Ophiopsis macrodus , Y. Thiolliere, Ann. Soc. Sci. Phys. & Nat. 
Lyon, [2] vol. iii. (1850), p. 148, and Poiss. Foss. Bugey, 
pt. ii. (1873), p. 19.—Lower Kimmeridgian (Lithographic 
Stone) ; Cirin, Ain, France. [Nearly complete fish; 
Lyons Museum.] 
A unique specimen from the Lithographic Stone of Eichstadt, 
Bavaria, now in the Dresden Museum, differs only from the typical 
