184 
ACTINOPTERYGII. 
pp. 10, 293, pi. xlix. fig. 1. [Imperfect fish; Palaeontological 
Museum, Munich.] 
1814. Propterus microstomus , L. Agassiz, ibid. p. 296, pi. 1. figs. 6-8. 
1851. Notagogus zieteni, A. Wagner, Abh. k. bay. Akad. Wiss., math.- 
phys. Cl. vol. vi. p. 65. 
1851. Propterus microstomas , A. Wagner, ibid. p. 66. 
1851. Propterus gracilis, A. Wagner, ibid. p. 68. [Imperfect fish ; 
Palaeontological Museum, Munich.] 
1863. Propterus microstomas, A. Wagner, loc. cit. vol. ix. p. 645. 
Type . Pish, wanting part of caudal fin; Palaeontological Museum, 
Munich. 
The type species, attaining a length of about 0*09. Length of 
head with opercular apparatus about equalling the maximum depth 
of the trunk and contained slightly more than four times in the 
total length of the fish ; the dorsal border gently arched and the 
maximum depth of the trunk two-and-a-half times as great as the 
width of the caudal pedicle. Length of the first dorsal fin-ray 
equalling the depth of the trunk at its point of insertion ; the 
short-based anal fin opposed to the hindermost rays of the dorsal. 
Scales finely denticulated. 
Form, fy Loc. Lower Kimmeridgian (Lithographic Stone) : Ba¬ 
varia. 
Not represented in the Collection. 
Propterus speciosus, Wagner. 
[Plate III. fig. 5.] 
1851. Propterus speciosus, A.Wagner, Abh. k. bay. Akad. Wiss., math.- 
phys. Cl. vol. vi. p. 67, pi. iv. fig. 1. 
1863. Propterus speciosus, A. Wagner, loc. cit. vol. ix. p. 644. 
Type. Imperfect fish ; Palaeontological Museum, Munich. 
A species attaining a length of about 0*15. Proportions as in 
the type species, but the dorsal border irregularly arched, sharply 
rising above the occiput and benir at the origin of the dorsal fin. 
The anterior and posterior portions of the dorsal fin comprising 
about 16 and 13 rays respectively; pelvic fins arising well in 
advance of a point mid-way between the pectorals and the caudal; 
the short-based anal fin opposed to the hindermost rays of the 
dorsal. Scales finely denticulated. 
Form, Sf Loc. Lower Kimmeridgian (Lithographic Stone): Bavaria. 
37088, 37935. Two fine specimens, in counterpart, exhibiting the 
principal characters of the species ; Solenhofen. The first 
is shown of the natural size in PI. III. fig. 5. 
Haberlein Coll. 
