482 
WKLLBURN : ON THE GENUS CCELACANTHUS. 
six of which are new to science. It had been the intention of the writer 
to figure and describe these latter, but, unfortunately, owing to lack 
of time, it has been impossible to do so. He hopes to describe them 
later in a separate paper. 
Explanation of Figure. 
Pa. Parieto-occipitals. 
Fr. Frontals. 
E. Ethmoidals. 
Or. Orbit. 
Sc.Pl. Sclerotic ring. 
A.O. Anterior Orbital and 
anterior frontals 
(fused). 
P.O. Posterior Orbital. 
S.O. Sub-orbital. 
P.F. Post frontal. 
Sq. Squamosal and post- 
temporals (fused). 
Mx. Maxilla. 
P.Mx. Premaxilla. 
X. and Cheek-plates. 
Op. Operculum. 
Art. An. Articulo-angular. 
D. Dentary. 
T.D. Infradentary. 
J. Jugular. 
S.Cl. Supra-clavicle. 
CI. Clavicle. 
I. CI. Infra-clavicle. 
N.C.I. Notochordal inter- 
space. 
N.Sp. Neural spines. 
H. Sp. Haemal spines. 
I. S. Interspinous bones. 
D.R. Dermal rays. 
P.F. Pectoral fin. 
V.F. Ventral fin. 
A.F. Anal fin. 
D.F. 1st. First dorsal fin. 
D.F, 2nd. Second dorsal fin. 
C.F. Caudal fin. 
S.C.F. Supplemental caudal 
fin. 
Ba. Basal supports. 
Ax. 12 3 and 4 Axonosts. 
S.W. Swim-bladder. 
N.W. Newal arches. 
H.A. Haemal arches. 
