MACRO SEMIIDJE. 
167 
Ophiopsis attenuata, Wagner. 
[Plate III. figs. 2, 3.] 
1863. Ophiopsis attenuate ,, A. Wagner, Abh. k. bay. Akad. Wiss., 
matb.-pbys. Cl. vol. ix. p. 655. 
1873. Ophiopsis attenuata,Y. Thiolliere, Poiss. Foss. Bugey, pt. ii. p . 19, 
pi. viii. fig. 2. 
Type. Trunk of fish; Palaeontological Museum, Munich. 
Form and proportions as in the type species, but the fish not 
attaining so large a size. External head-bones and opercular bones 
smooth; dorsal fin-rays mostly, if not all, undivided: scales deli¬ 
cately serrated, not pectinated. 
Form, Log. Lower Kimmeridgian (Lithographic Stone) : Ba¬ 
varia, and Ain, France. 
P. 1093. Fish of the form ascribed to this species by Thiolliere; 
Cirin, Ain, France. The head is shown only in impression, 
and the dorsal fin is very imperfect. Egerton Coll. 
P. 3609. Small individual 0*075 in length, wanting the anal fin 
shown of the natural size in PI. III. fig. 2; Kelheim, 
Bavaria. The opercular elements and the fins are espe¬ 
cially well exhibited, but no fulcra are preserved except 
at the base of the caudal fin. Enniskillen Coll. 
P. 1090. More imperfect example of a similar fish, displaying the 
paired fins : Kelheim. The outer aspect of the left 
pectoral fin is represented of three times the natural size 
in PI. III. fig. 3. Several elongated basal cartilages 
(6) are indicated, the hindermost one being much larger 
than the others, with its upper extremity more inclined 
forwards. Above the basal lobe is an enlarged scale ( os ')., 
apparently of the postclavicular series; and the fin-rays 
are about 12 or 13 in number. Egerton Coll. 
Ophiopsis sequalis, Wagner. 
1863. Ophiopsis cequalis , A. Wagner, Abb. k. bay. Akad. Wiss., matb.- 
pbys. Cl. vol. ix. p. 656. 
Type. Nearly complete fish; Palaeontological Museum, Munich. 
A species attaining a length of about 0*2. Length of head with 
opercular apparatus exceeding the maximum depth of the trunk 
and contained about four-and-a-half times in the total length of the 
sh; maximum depth of trunk twice as great as the width of the 
