188 
ACTINOPIE RYGII. 
minal region is slightly deeper. Anterior portion of dorsal fin 
nearly twice as much extended as the second portion, both about 
equally elevated and the first three rays of each more approximated 
than the others ; the anterior portion with about 13 rays, the pos¬ 
terior portion with not less than 11 or 12 rays, which are somewhat 
less widely spaced. Anal fin arising opposite the middle of the 
hinder portion of the dorsal. Scales conspicuously denticulated, 
except those of the pectoral region, which are more or less cycloidal. 
Form. <Sf Loc . Lower Kimmeridgian (Lithographic Stone) : Ba¬ 
varia. 
P. 3610-11. Two specimens, the first with imperfect head, the 
second very fragmentary and chiefly in impression; Kel- 
heim, Bavaria. Enniskillen Coll. 
P. 1089. Another imperfect specimen exhibiting the rounded scales 
in the pectoral region ; Kelheim. Egerton Coll. 
P. 1090. Small fish about 0*055 in length, probably young of this 
species; Kelheim. Egerton Coll. 
Notagogus inimontis, Thiolliere. 
1850. Notagogus Imi montis,\. Thiolliere, Ann. Soc. Sci. Phys. & Nat. 
Lyon, [2] vol. iii. p. 137. 
1858. Notagogus iunismontis, V. Thiolliere, Bull. Soc. Geol. France, 
[2] vol. xv. p. 783 (name only). 
1873. Notagogus inimontis , V. Thiolliere, Poiss. Foss. Bugey, pt. ii. 
p. 15, pi. vi. fig. 3. 
1893. Notagogus inimontis , H. E. Sauvage, Bull. Soc. Ilist. Nat. 
Autun, vol. vi. p. 428. 
Type. Nearly complete fish; Lyons Museum. 
A species doubtfully distinct from N. denticulatus , but described 
by Sauvage as separated by its relative^ larger teeth and steeper 
facial profile of the head. 
Form, Loc. Lower Kimmeridgian (Lithographic Stone) : Ain, 
France. 
P. 4692. Trunk without head; Cirin, Ain. Purchased , 1884. 
Notagogus macropterus, Tetter. 
1881. Notagogus 7 nacropterus, B. Vetter, Mittheil. k. mineral.-geol. 
Mus. Dresden, pt. iv. p. 46. 
Type. Fish, wanting caudal fin ; Dresden Museum. 
A species closely related to N. denticulatus, described as differing 
