268 
ACTIXOPTERYGII. 
P. 4003, P. 4742 a. Head and part of abdominal region, vertically 
crushed, and cleft along the plane of the dentition; 
Hakel. The tuberculated roof of the skull is shown, with 
its great, laterally compressed, solid occipital spine; and 
behind the occiput are portions of a pair of large unorna¬ 
mented plates too imperfect for determination. No sutures 
can be observed in the cranial roof, and the ethmoidal 
extension is very narrow. The dentition agrees with 
that of the preceding specimen; and the pectoral arch 
again shows the three spines, with some fragments appa¬ 
rently of fin-rays. The short ribs are also well-preserved. 
Lewis Coll. 
39227. Imperfect cranium, with complete occipital spine, in side 
view, shown of the natural size in PI. XVI. fig. 4; 
Hakel. The base of the skull is bent sharply down¬ 
wards at the anterior extremity of the otic region; and 
the median ethmoidal plate is shown in advance of the 
orbit. Tristram Coll. 
P. 3767. Vomerine dentition doubtfully ascribed to this species ; 
Hakel. The dentigerous surface is convex from side to 
side, and the teeth are closely arranged in five series. 
They are irregular in form, not rounded ; and only a few 
of those placed anteriorly exhibit feeble traces of an apical 
pit. Enniskillen Coll. 
Coccodus lindstroemi, Davis. 
1890. Coccodus lindstrcemi, J. W. Davis, Quart. Journ. Geol. Soc. 
vol. xlvi. p. 565, pi. xxii. 
Type. Nearly complete fish ; State Museum, Stockholm. 
A smaller species than the type, distinguished by the relatively 
larger size of the head and the coarse denticulations on the hinder 
border of the occipital spine. 
In the type specimen the occipital spine is evidently crushed 
backwards, and the description of the remains of the opercular 
apparatus by Davis is based on too fragmentary evidence to be 
accepted as correct. 
Form. Sf Loc. Upper Senonian: Hakel, Mt. Lebanon, Syria. 
Not represented in the Collection. 
As pointed out by J. W. Davis (Trans. Hoy. Dublin Soc. [2] 
vol. iii. 1887, p. 548), the splenial dentition from Hakel described 
under the name of Gyrodus syriacus by 0. Fraas (Aus dem Orient, 
