274 General Notes. { March, 
especially of the Scotch scorpion referred to that genus by Mr. 
Peach. An additional reason to those given above for removing 
Proscorpius from the Carboniferous Eoscorpioide, and for refer- 
ring this genus to the Apoxypodes, fam. Palaophonoide, may be 
found in its being, geologically speaking, almost contemporary 
with the Palzophoni, belonging, like these, to the Upper Silurian 
formation. As the Palzophoni, and all other more recent scor- 
pions, are undoubted land-animals and air-breathers, and, as no 
traces of branchiz have been shown to exist in Proscorpius, there 
is, I believe, no serious reason for considering that this scorpion 1s 
an aquatic animal, or that “ we have here a link between the true 
aquatic forms, the Eurypterus and Pterygotus, and the true air- 
breathing scorpions of subsequent periods,” as Mr. Whitfield sup- 
poses. Very strange, also, would it be, if the connecting link 
between the gigantic Eurypterids and the scorpions should be 
formed of such a little creature as Proscorpius osbornei, one of the 
smallest scorpions hitherto known—especially as this diminutive 
scorpion lived contemporaneously with the Eurypterids,—7. Tho- 
rell, Sori, Italy. 
An Extinct Doc.—The remains of an extinct type of dog, dif- 
fering widely from any of the ordinary wild or domestic dogs, have 
been recently described by Mr. J. A. Allen in the memoirs of the 
museum of zoology at Harvard college. The bones were found in 
Ely cave, Lee county, Virginia, one of the oldest of a group of cav- 
erns in limestone of Cambro-Silurian age described by Professor 
Shaler, of the geological survey of Kentucky. In general form the 
new dog was'a short-limbed, heavy-bodied animal, resembling in its 
proportions a badger rather than a dog. The skull has not been 
found. Mr. Allen refers the remains to a new genus, under the 
name of Fachycyon robustus. 
MINERALOGY AND PETROGRAPHY.' 
1 Edited by W. S. BAYLEY, Johns Hopkins University, Baltimore, Md. 
* Washington, Government Printing Office, 1885. ee 
>A rock with the microscopic characteristics of ordinary greisen, but conta i : 
albite instead of quartz. i : 
