98 FOSSIL MEDUS. 
Dr. Kner’s description of this species is essentially as follows: 
In a fragment of a flint nodule, such as exist in great numbers in the chalk of 
Niszniow (in Galicia, Stanislaw chalk). The piece of flint shows on one fractured 
surface (a) the dorsal and upon the other (0) the oral side of the medusa. The many- 
lobed and notched margin of the disk refers this genus to the acraspedote acalephs, 
particularly for the reason that in the angles of the indentation, roundish, point-like 
bodies can be recognized here and there under the disk, which are distinguished by a 
different coloring from the rest of the margin, which resembles a dried orange peel, 
as well as by their opacity. The number of these conjectural marginal bodies or 
ocelli, however, can not be determined precisely; I was able to recognize only a few 
of them in the entire circumference. Then, too, the unequal thickness of the flint and 
its shaly fracture hinder the meduse from shining through. 
The finer structure of the margin shows under the lobes as a fine-celled or meshed 
one, and the radii lying between, which proceed from the indentations, may have led 
into aring canal. This structure can hardly be made apparent by drawing. 
On the oral side some very indistinct arms glimmer through the mass, which I 
believe to have surrounded the mouth to the number of four. Their outline and 
length can not be given, since they are much contorted and deeply buried in the flint. 
So little information concerning the arms, tentacles, and sexual organs is vouch- 
safed by the specimen that I was the more rejoiced at the sight of the muscular 
bands which, as in many living meduse, are distributed concentrically in a parallel 
position on the ventral side. Since from the drawing the size, form, and number of 
the marginal lobes, as well as the coloration still retained, which resembles that of 
many living meduse, are shown, a further description would be unnecessary; all the 
more as no finer details can be added. Moreover, I refrain from the attempt to 
determine its genus, since too many essential organs are lacking on the oral side. 
Still, it will probably find place in the family of the Pelagide, and may, therefore, for 
the time being, be designated Medusites cretaceus, in order to express at least the 
formation to which it belongs. 
This species has been noticed by Drs. Brandt, Haeckel, and Ammon. 
Dr. Brandt suggests that it ought to be assigned to the family Pelagide, 
and it is so referred by Dr. Ammon. 
The original figure of this species by Kner shows so little of what he 
describes that I have not thought it worth reproducing. 
Dr. Zittel mentions other impressions from the Cretaceous flints, in his 
text-book ‘Fine imprints of medusze, but not yet accurately examined, 
in flint nodules of the Upper Cretaceous, are found as Pleistocene drift 
near Hamburg, and in Galicia indistinct impressions in flint of the Creta- 
ceous of that region have been described by Kner.” Dr. Ammon describes 
the disk-like bodies under the name of Medusites latilobatus. 
1Handb. der Pal., Vol. I; Paleozool., p. 306. 
