Reviews—Dr. R. H. Traquair—On Paleospondylus. 
C. HE. De Rance.—On the Pre-Glacial Form of the Ground in Lan- 
cashire and Cheshire. 
Dugald Bell.—On the Granite Boulders of the Clyde Valley. 
Hf. Arnold- Bemrose.—The Toadstones of Derbyshire. Ilustrated by 
Lantern Slides. 
Prof. W. J. Sollas.—On the Minute Structure of the Skeleton of 
Monograptus priodon. Illustrated by Lantern Slides. 
W. W. Watts.—On Perlitic Structure in Quartz. Illustrated by 
_ Lantern Slides. 
In other Sections— 
Prof. Stirling.—Note on the Discovery of Diprotodon Remains in 
Australia. 
Report of the Committee on Earth Tremors. 
Report of the Committee on the Volcanic and Seismological 
Phenomena of Japan. 
as JaB Wh at DEY WY Ss 
I.—A Fourruer Descrirrion or P4Lmzospoypytus Guwni. By 
Dr. R. H. Traquair, F.R.S., Proc. Roy. 
Phys. Soc. Edinburgh, vol. xii. 1892-93, 
pp. 87-94, pl. 1. 
HIS little organism, it will be remem- 
bered, is a supposed fossil Marsipo- 
branch fish, first briefly described three 
years ago by Dr. Traquair, from the Old Red 
Sandstone of Achanarras, Caithness. A 
more detailed account of the genus and 
Species is now given, and the author adds 
the accompanying restored sketch. 
Se 
ec SE 
erie 
AF 
SSS ; SoZ aa 
=—— ae 4 east 7 tt 
Ze TO at. 
The organism is now shown to be desti- 
tute of jaws: and it still remains uncertain 
whether or not the nose was a paired organ. 
The supposed dorsal shield behind the head 
proves to consist of a pair of oblong plates, 
apparently not external; and between these 
the ring-vertebre are spaced, while behind 
they form a continuous chain. There are 
short and stout neural spines in the ab- 
dominal region, but no ribs. No traces 
of paired limbs can be detected in any 
specimen. 
Restoration of Paleospondylus Gunni (somewhat enlarged), by Dr. R. H. Traquair. 
¢. cirri; ¢.p. anterior part of cranium; p. a. posterior part of cranium; a. 
paired plate-like structure behind the head. 
ATL 
