LEPTOLEPIDJE. 
519 
Form . Sf Loc . Lower Kimmeridgian (Lithographic Stone): 
Bavaria. 
49130. Plaster cast of fine specimen noticed by Wagner, loc. cit. 
p.729; Eichstadt. Purchased, 1878. 
49134. Plaster cast of type specimen of so-called Aethalion injlatus ; 
Kelheim. Purchased, 1878. 
P. 1095. Counterpart of the same, showing most of the principal 
characters of the species ; Kelheim. Egerton Coll. 
37903. Nearly complete fish displaying the form of the mandible 
and the situation of the fins; Solenhofen. 
Haberlein Coll. 
37042. Remains of a coiled-up fish, in counterpart, displaying the 
jaws and caudal fin ; Solenhofen. Haberlein Coll. 
32477. Another imperfect specimen, wanting dorsal and anal fins ; 
Solenhofen. Tesson Coll. 
^ ^ t£> Pj-J&UAJX; 0 Jyg WA, (Q (>7 
An Aethalion angustus, Munster. 
1839. Caturus angustus, G. von Miinster, Neues Jalirb. p. 679. 
1842. Aethalion angustus, G. von Miinster, ibid . p. 42. 
1842. Aethalion tenuis, G. von Miinster, ibid. p. 42. [[Imperfect fish ; 
Palgeontological Museum, Munich.] 
1842. Aethalion par mis, G. von Munster, ibid. p. 43. [Ditto.] 
1863. Aethalion tenuis, A. Wagner, Abh, k. bay. Akad. Wiss., math.- 
phys. Cl. vol. ix. p. 730. 
Type. Imperfect fish ; Palaeontological Museum, Munich. 
A small fish, possibly the young of the preceding species (as 
suggested by Wagner), but with a more slender trunk. The 
specimen noticed below, which is labelled by Miinster, also has the 
anal fin slightly further forwards than in A. Jcnorri. 
Form, df Loc. Lower Kimmeridgian (Lithographic Stone) : 
Bavaria. 
P. 3575. Eish measuring 0*075 in length without the caudal fin, 
/ which is wanting ; Kelheim. The head with opercular 
f\ apparatus measures about 0*02 in length, while the 
maximum depth of the trunk appears to have been 0*013. 
(9^7 : Ten supports can be counted in the anal fin, and there 
are distinctly more in the dorsal. The vertebral centra 
are fully formed and are suggestive of an adult fish. 
Enniskillen Coll. 
