ERIK A : SON STENSIO 
yet to decide with certainty whether it really belongs to the same genus as this. It is 
also worthy of mention that the lepidotrichia of W.? multistriata and those of the Wimania? sp. 
described above are rather different, a fact that seems to suggest that one of these two 
species really does not belong to the genus Wimania. 
Geological occurrence and localities. — W. ? multistriata occurs fairly commonly 
in the fish horizon. It is found at Mt Congress, Mt Rotunda (Student Valley), Sticky 
Keep, Mt Trident and Mt Milne Edwards. 
Genus Sassenia n. g. 
The genus Sassenia is still incompletely known and the diagnosis can consequently 
not lay claim to any completeness. The characteristics so far known can be summarized 
as follows: Fishes probably of average size or fairly small. The head with a sculpture 
of flattened tubercles situated more or less closely together. The parasphenoid wide. 
The postorbitally situated cheek-plates three in number with a small accessory one behind 
the dorsal one. Infraorbital long and arched. Pterygoid thin; its anterior limb with a 
high and at the same time 
relatively broad caudal part. 
Coronoid probably triangu¬ 
lar in shape. The ceratohyal 
ossification long; the opercular 
large, triangular, with rounded 
corners. The labial margins 
of the jaws probably with 
conically pointed rather large 
teeth; the gill-arches with 
Text fig. 34. Vfimania? multistriata n. sp. 
A. Scales from P. 244. Vi- B. Scales from P. 247. >/i. 
smaller ones, of a similar shape; otherwise the teeth small, bluntly conical or nearly 
spheroidal, often furnished with a small point set off as a verruca. The sensory canals 
developed normally. The scales oval with a rounded posterior margin and sculpture 
of rounded or somewhat lengthened tubercles, sometimes partly also of striae and 
tubercles together. 
Like Wimania, Sassenia too shows in certain respects striking resemblances to the 
Carboniferous and Permian Coelacanthids, as, for instance, in the shape and size of the 
parasphenoid, the opercular, and to a certain extent in the development of the pterygoid 
as well, further, in the general arrangement of the cheek-plates and partly also with 
regard to the sculpture of the scales and the cranial bones. Sassenia is easily distinguished 
from Wimania by the shape of the opercular and the pterygoid. An additional important 
difference between them is that the sculpture of the head is, as we have seen, absent 
or weak in Wimania, while in Sassenia it is well developed. 
A circumstance that deserves special mention in this connection is that one 
of the two Sassenia species described below, namely S. tuberculata, agrees closely 
with regard to the sculpture of its scales with the species from the Cava Tre- 
fontane in Tessin described by me under the name of Undina sp. (Andersson, 1916 a, 
pp. 14—16). An obvious resemblance of the same sort can also be observed bet- 
