40 G 
ACTINOPTEKTGH. 
Hoplopteryx stachei (Jvramberger). 
1895. Beryx stachei , I). G. Ivramberger, Djela Jugoslav. Akad. 
vol. xvi. p. 43, pi. i. figs. 3, 4. 
Type. Imperfect fish ; Trieste Museum. 
A small species attaining a length of about O’l, much resembling 
IT. syriacus but with more extended dorsal fin, which comprises 9 
large spines and about 12 divided rays. Number of vertebrae stated 
to be 24, but more indicated in tho figure of the typo specimen. 
Form. Sf Loc. Cretaceous : Comen, Istria. 
Not represented in the Collection. 
The following specimen may perhaps represent an undetermined 
species of Hoplopteryx : — 
48122. Fragmentary fish with tuberculatcd large scales ; Upper 
Cretaceous, Sahel Alma, Mt. Lebanon. Lewis Coll- 
The following species are not represented in the Collection and 
are very doubtfully determined : — 
Hoplopteryx minor , J. W. Davis, Trans, ltoy. Dublin Soc. I -J 
vol. iv. (1890), p. 421, pi. xlv. figs. 3, 4. — Upper Cretaceous 
(Danian) ; Limhamn, Scania. [Fragmentary fish ; Roj al 
State Museum, Stockholm.] 
Hoplopteryx ohlongus , J. W. Davis, loc. cit. [2] vol. iii. (1880* 
p. 515, pi. xxv. fig. 1. — Upper Cretaceous; Sahel Alma, 
Mt. Lebanon. [Imperfect fish ; Edinburgh Museum of 
Science & Art.] 
Remains apparently of Hoplopteryx occur also in the Chalk of 
the Dept. Somme, France {Beryx, I’. Gervais, Zool. et Pal. Frang. 
1852, Poiss. Foss. p. 6, pi. lxx. figs. 1, 2). 
Genus DINOPTERYX, novum. 
Trunk elongate-ovoid and laterally compressed. Cleft of mouth 
little oblique, and teeth minute ; preoperculum without spine. 
^ ertebrse about 15 in the abdominal, 15 in the caudal region. 
Pelvic fin-spine very stout and large. Dorsal fin much extended, 
occupying tho greater portion of the back, with about 14 stout 
spines, nearly similar in length, not closely pressed together ; anal 
fin comparatively short, with about 7 stout spines not closely pressed 
together ; caudal fin deeply cleft. Scales cycloid and smooth, rather 
small, none much enlarged or thickened. 
