PACHYCOKMIDJE. 
i ) ^ rr 
O i D 
Genus SAUROPSIS, Agassiz. 
[Neues Jahrb. 1832, p. 142.] 
Syn. Diplolepis, B. Vetter, Mittheil. k. mineral.-geol. Mus. Dresden, 
pt. iv. 1881, p. 91. 
Trunk elongate-fusiform, laterally compressed. Head relatively 
large, and snout not produced ; marginal teetli well-spaced. No 
ossifications in sheath of notochord. Fin-fulcra absent. Pectoral 
fins large and sickle-shaped, the rays only branching and articulated 
at the extreme end : pelvic fins small ; dorsal fin in part or com¬ 
pletely opposed to the anal, which is high and acuminate in front 
and much extended as a low fringe behind ; caudal fin very deeply 
forked. Scales minute, those of the ventral aspect much broader 
than deep ; lateral line conspicuous. 
Sauropsis longimanus, Agassiz. 
1833-44. Sauropsis longimanus, L. Agassiz, Poiss. Foss. vol. ii. pt. i. 
p. 11; pt. ii. p. 121, pi. lx. 
1852. Sauropsis longimanus — Pachycormus, F. A. Quenstedt, Handb. 
Petrefakt. p. 218. 
1860. Sauropsis longimana , A. Wagner, Gelehrte Anzeig. k. bay. 
Akad. Wiss. vol. 1. p. 215. 
1863. Sauropsis longimana , A. Wagner, Abh. k. bay. Akad. Wiss., 
math.-phys. Cl. vol. ix. p. 678. 
Type. Nearly complete fish ; Palaeontological Museum, Munich. 
The type species, attaining a length of about 0-3. Length of 
head with opercular apparatus equalling about one-quarter of the 
total length to the base of the caudal fin, and exceeding the 
maximum depth of the trunk. Pelvic fins arising midway between 
the pectorals and the anal; dorsal fin arising slightly in advance of 
the anal, and the anterior rays of these two fins equal in elevation. 
Form. Sf Log. Lower Ilimmeridgian (Lithographic Stone): Bavaria. 
37365. Plaster cast of type specimen ; Solenhofen. 
Purchased , 1863. 
An undetermined species closely related to Sauropsis longimanus 
is indicated by the following specimen :— 
P. 7568. Imperfect fish about 0-4 in length, dorso-lateral aspect; 
Oxford Clay, Christian Malford, Wiltshire. 
History unknown. 
