Mr. A. S. Woodward—Paleichthyological Notes. 285 
The external ornament consists of large ganoine-coated 
tubercles arranged in irregular longitudinal series, often partly 
wanting; and a regular series of these tubercles, somewhat 
enlarged, pointed, and hooked downwards, is arranged along 
the postero-external margin of the spine. As shown by other 
specimens, the hinder face is flat or slightly concave, and the 
transverse section of the spine thus precisely resembles that of 
the dorsal spine of the recent Chimera. 
3. On Gyrolepis dubius, sp. n., from the Rhetic Formation 
of Scania. 
So far as fragmentary specimens admit of being compared, 
it appears that the Rheetic fish-remains of Southern Scania, 
Sweden, are very similar to those of Britain and Germany *. 
In the collection of the Geological Survey of Sweden, 
however, there is one large fragment of a ganoid fish that 
does not appear to have been discovered elsewhere; and the 
writer is indebted to the kindness of Dr. N. Olaf Holst for 
the opportunity of closely studying the specimen. 
The fossil in question exhibits only a large portion of the 
squamation in impression, with a few imperfect scales and 
part of the dorsal fin; and the large dimensions of the fish 
are indicated by Pi. X. figs. 10-12, which show respectively, 
of the natural size, part of the squamation, an isolated scale, 
and part of the dorsal fin-rays. ‘The flank-scales, as observed 
in the imperfect impression (fig. 10), are scarcely, if at all, 
deeper than broad; and the few scales that remain exhibit a 
narrow overlapped anterior margin, with a nearly smooth 
external ganoid face, only marked by some small punctuations 
and by a few short oblique wrinkles at the anterior border 
(fig. 11). Whether or not the scales were serrated cannot be 
determined; and though the peg-and-socket articulation can 
be distinctly seen, the inner vertical rib appears to be feeble. 
The rays of the dorsal fin (fig. 12) are stout and closely 
articulated, and each joint is ornamented with two or three 
longitudinal streaks of ganoine. 
It is, of course, not possible to determine the generic 
position of so fragmentary a fossil with certainty ; but it will 
probably prove to belong to Gyrolepis, The provisional 
name of G. dubius is therefore proposed for the fish in 
question, the characters of the scale-ornament and fin-rays 
distinguishing it from the known species of Gyrolepis. 
* JB. Lundgren, Minneskr. Kong. Fysiogr. Sillsk. Lund, no. v. (1888). 
Ann. & Mag. N. Hist. Ser. 6. Vol. xin 22 
