:o6 
ERIK A : SON STENSIO 
Geological occurrence and localities. — A. robusta is only known from the 
fish horizon. It is undoubtedly more common in Sasseti Valley than any of the other 
Coelacanthids, while, on the other hand, it is found more sparsely in Dickson Land and 
on the west side of Ekman Bay. The finds are divided among the following places: 
Mt Congress, the cliffs of the shore south of Sassen Bay, Mt Marmier, Mt Hamilton, 
Mt Trident, Mt Milne Edwards and Mt Andersson. 
Axelia elegans n. sp. 
(PI. 16, figs. 6, 7; PI. 17, figs. 1, 2.) 
Besides A. robusta, described above, there are remains of another Axelia species, 
for which I have proposed the species name elegans. The species in question is at present 
represented only by three incontestable specimens (P. 220, 221, 223 ), wich are all very 
incompletely preserved. Thus of the bones of the head only a few are present and of 
the rest of the body only remains of some fins and a 
number of scales. 
With regard to size at least the specimens so far 
discovered are smaller than A. robusta. Thus the length 
of the head in the specimen P. 223 cannot be estimated 
as more than about 10 cm. 
The membrane bones of the neurocranium and 
the visceral skeleton. 
The membrane bones of the cranial roof show in 
most respects close agreement with those of A. robusta 
(text fig. 48; PI. 17, figs. 1, 2). The supratemporo-extra- 
scapular (Stemp. ext) differs, however, inasmuch as it 
also includes the lateral end of the supratemporal com¬ 
missure of the cranial section of the lateral line, while in 
A. robusta, as we have seen, the whole of this commissure is situated medially of the 
supratemporo-extrascapular. The sculpture on all the superficial bones is relatively 
coarser than in A. robusta and consists of rather sparse, edged, sometimes somewhat 
lengthened tubercles. Unlike what is the case in A. robusta, the tubercles have, however, 
no special orientation but are generally scattered in an irregular manner. 
With regard to the parasphenoid ( Psph , PL 17, fig. 1), pterygoid {Pt, text fig. 48; 
PI. 17, fig. 1) and quadrate ( Qu , text fig. 48; PI. 17, fig. 1) there is nothing to add beyond 
what has been said about A. robusta. The opercular {Op, text fig. 48; PL 16, fig..6; Pl. 17, 
fig. 1), on the other hand, is higher than in this species and has also a considerably 
stronger concave part on the dorsal portion of the anterior margin. Its sculpture (Pl. 16, 
fig. 6) consists of somewhat coarse striation. The striae are fairly short and run, chiefly 
horizontally, on the greater part of the dorsal portion of the bone from the anterior to 
the posterior margin. Towards the ventral end of the bone on the other hand, they 
are arranged,unlike in A. robusta, in a characteristic way in curved lines, the convexi¬ 
ties of which are turned dorsally. The arrangement of the striae is in other respects 
more irregular than in A. robusta. 
Axelia elegans n. sp. 
Remains of the cranial roof and the visceral 
skeleton. Sculpture not drawn. Sensory 
canals with dotted lines and shading. From 
P- 223. i/,. 
Fr. dsph; fronto-dermosphenotic; Op, oper¬ 
cular; Pa. it, parieto-intertemporal; Pt, ptery¬ 
goid; Qu, quadrate; So, supraorbitals; 
Stemp. ext, supratemporo-extrascapular. 
