formation, the appendices belonging to which resemble those found in the scorpions of our own day." This species has been named Palæophoneus nuncius.
The Scottish specimen (Fig. 2) is described by Mr. Peach in "Nature" as being about an inch and a half long, and lying on its back
Fig. 1.—Fossil Scorpion (Palæophoneus nuncius) found in the Silurian rocks of the Island of Gottland of Sweden. From the photograph sent by Professor Lindström to M. Alphonse Milne-Edwards, (From "La Nature.")
on the stone. "Its exposed ventral surface shows almost every external organ that can be seen in that position, and in this way serves to supplement the evidence supplied by the Swedish specimen. As in the northern individual, the first and second pair of appendages of the
