178 
ACTINOPTERYGII. 
P. 7177. Another fine specimen 0*165 in length, displaying ribs 
and all the fins, as shown in PL III. fig. 4; Eichstadt. 
The pelvic fin-supports are seen in impression, much con¬ 
stricted near the distal end, much expanded proximally. 
Purchased, 1894. 
37094. Distorted fish, imperfectly preserved but showing the 
pectinated squamation ; Solenhofen. Haberlein Coll. 
P. 956. Imperfect head and abdominal region, showing the paired 
fins ; Kelheim. Egerton Coll. 
P. 955, P. 3616. Imperfect trunk 0*07 in length, in counterpart, 
with displaced squamation, showing ossified ribs and dorsal 
fin-supports with expanded distal ends ; Kelheim. The 
scales arc finely serrated. 
Egerton and Enniskillen Colls. 
Macrogemius dumortieri (Thiolliere). 
1858. Disticholepis dumortieri , V. Thiolliere, Bull. Soc. Geol. France, 
[2] vol. xv. p. 783 (name only). 
1873. Disticholepis dumortieri , V. Thiolliere, Poiss. Foss. Bugey, pt. ii. 
p. 15, pi. vi. fig. 1. 
1883. Disticholepis dumortieri , H. E. Sauvage, Bull. Soc. Geol. France, 
[3] vol. xi. p. 479. 
Type. Nearly complete fish; Lyons Museum. 
A species of moderate size. Head with opercular apparatus 
somewhat longer than its maximum depth, and occupying about 
one-quarter of the total length of the fish ; the maximum depth of 
the trunk nearly three times as great as the width of the caudal 
pedicle. Bays of dorsal fin about 82 in number, denticulated on 
their posterior border and stout but not expanded; the length of 
those of the caudal region scarcely if at all exceeding the depth of 
that part of the trunk. Pelvic fins arising slightly in advance of 
the middle point between the pectoral and caudal fins, and the anal 
arising shortly behind. Scales conspicuously pectinated. 
Form. § Loc. Lower Kimmeridgian (Lithographic Stone): Ain, 
France. 
P. 4684. Imperfect impression of a typical fish; Cirin. 
Purchased , 1884. 
Macrosemius fourneti (Thiolliere). 
1850. Disticholep)is fourneti, Ann. Soc. Sci. Phys. & Nat. Lyon, [2] 
vol. iii. p. 136. 
