I'HOLlDOrilOKlDJE. 
485 
Pleuropholis Isevissima, Egerton. 
1834. Pholidophorus Icevissimus, L. Agassiz, Poiss. Foss. Feuill. p. 10 
(name only). 
1844. Nothosomus Icevissimus, L. Agassiz, Poiss. Foss. vol. ii. pt. ii. 
p. 289 (name only). 
1851. Nothosomus Icevissimus, A. Wagner, Abk. k. bay. Akad. Wiss., 
math -phys. Cl. vol. yi. p. 63. 
1858. Pleuropholis Icevissimus, Sir P. Egerton, Figs. & Descript. Brit. 
Organic Remains, dec. ix. (Mem. Geol. Surv.), no. 7, p. 3, pi. vii. 
fig. 3. 
1863. Pleuropholis Icevissima, A. Wagner, loc. cit. vol. ix. p. 668. 
1863. Pleuropholis egertoni , A. Wagner, ibid. p. 670. [Name given to 
specimen figured by Egerton.] 
Type. Imperfect fish ; Palaeontological Museum, Munich. 
An imperfectly defined species attaining a length of 0-13. Pro¬ 
portions very similar to those of the type species, but width of 
caudal pedicle equalling about two-thirds the depth of the flank- 
scales in the middle of the abdominal region, and origin of anal fin 
much more remote. Scales smooth, not serrated. 
Form, Loc. Lower Kimmeridgian (Lithographic Stone) : Ba¬ 
varia. 
P. 1100. Small specimen figured by Egerton, loc. cit .; Kelheim. 
There is a false appearance of slenderness due to the fact 
that the dorsal and ventral scales are partly broken away 
or obscured by matrix. The curiously-deflected lateral 
line is well shown. Egerton Coll. 
P. 3598. Another small imperfect specimen, partly distorted and 
shown from the ventro-lateral aspect; Kelheim. 
Enniskillen Coll 
P. 3615. Remains of a larger fish, probably of this species ; Kel¬ 
heim. Enniskillen Coll. 
Pleuropholis thiollieri, Sauvage. 
1873. Pleuropholis, V. Thiolliere, Poiss. Foss. Bugey, pt. ii. pi. vi. 
fig. 6. 
1883. Pleuropholis thiollieri, H. E. Sauvage, Bull. Soc. Gdol. France, 
[3] vol. xi. p. 499. 
Type. Nearly complete fish; Lyons Museum. 
A species attaining a length of about 012. Length of head with 
opercular apparatus about equalling the maximum depth of the 
trunk and contained nearly five-and-a-half times in the total length 
