394 
ACTINOrTERYGII. 
anterior border. More than 40 supports of the anal fin 
are preserved, but the series is incomplete. Above the 
expanded hsemal at the base of the caudal fin there are 
indications of a series of robust supporting spines which 
also are probably haemal. By exchange , 1894. 
P. 954. Crushed remains of head and trunk ; Solenhofen. The 
cranium is exposed from above, displaying the obtuse 
rostrum in front (PI. XIV. figs. 1,1 a) and much spar 
beneath the hinder portion. The mandibular dentition is 
also well shown. Egerton Coll. 
P. 4236. Imperfect trunk with scattered squamation and displaced 
median fins ; Solenhofen. The single expanded haemal is 
well shown in position ; and at the base of the upper 
lobe of the displaced caudal fin there is the series of 
robust supports noted in the last specimen. 44 supports 
of the anal fin remain, but the series is incomplete. The 
scales are shown to be rhombic, narrowed towards the 
ventral border, and all are smooth. Enniskillen Coll. 
Hypsocormus macrodon (Wagner). 
1858. Strobilodus giganteus, F. A. Quenstedt (errore), Der Jura, p. 808, 
pi. xcvii. fig. 12. 
1858. Eugnathus macrodon, A. Wagner, Gesch. d. Urwelt, ed. 2, vol. ii. 
p. 471. 
1863. Eugnathus macrodon , A. Wagner, Abh. k. bay. Akad. Wiss., 
math.-phys. Cl. vol. ix. p. 671. 
1883. Strobilodus giganteus, F. A. Quenstedt (errore), Handb. Petrefakt. 
ed. 3, p. 334, woodc. fig. 105. 
1887. Hypsocormus 7nacrodon , K. A. von Zittel, Handb. Palseont. 
vol. iii. p. 226. 
Type. Nearly complete fish; Palseontological Museum, Munich. 
A large species, attaining a length of about 1*5. Head with 
opercular apparatus occupying about one-fifth of the total length to 
the base of the caudal fin. Snout short and obtuse, with large 
vomerine teeth directed almost vertically. External bones and 
anterior fin-rays tuberculated. Scales of the flank in part deeper 
than broad, those of the ventral aspect 3 or 4 times as broad as 
deep, all more or less finely tuberculated, many also with a few 
vertical striations near the anterior margin. 
Form. Sf Loc. Lower Kimmeridgian (Lithographic Stone); 
Bavaria and Wiirtemberg. 
