22 
and Helix, (a land shell.) This no doubt, belongs to the 
Brown Coal. 
A Scorpion is figured in Prussian Amber, by Schweigger, 
a genus properly a native of warm climates, certainly never 
occurring so far North as Dantzig. A new genus of spiders 
described by the same writer, approaches in its characters a 
southern, and probably an American type. Formica 
Surinamensis, or at least one like it, has already been recog- 
nised in Amber, and some Insects of the following genera 
viz:—Gyrinus, Saperda; Hispa and Lamprosoma evince a 
South American relationship, while the Blattide, and some of 
the Hymenoptera resemble closely oriental species. The pres- 
ence of Phryganea, Ephemera, Panorpa, and Leptura, and - 
many other genera, indicate a northern climate. Perhaps, like 
some of the Lias Insects, the latter were (as I have suggested) 
brought down by streams from the higher regions of a 
mountainous country adjacent. At all events, we may 
conclude that the climate and temperature of Europe have 
undergone considerable change, which other organisms tend to 
prove, since the Tertiary period. The above examples of 
tropical Insects testify that the Amber producing tree did 
not vegetate under such a climate as that which Prussia, 
especially the Baltic area, now enjoys. As one might 
expect, the majority of the Amber Insects are Xylophagous. 
Foreign writers on this subject, state that upwards of 200 
species of Coleoptera are already known. Mr. Hope has 
recognised and described 83 genera, and various others 
uncharacterized, several of which belong to temperate 
climates, and many which are probably tropical. The 
major part of the insects, he adds, exhibit a close resemblance 
to existing species, though as he before remarks, not 
identical with them, and therefore extinct, and can be satis- 
factorily classed under published genera. He gives a 
