504 
ralist could even conjecture to'what class in the animal kingdom it 
should be referred, and in this enigmatie state it was left by Agassiz 
in the notice given of it in bis ‘ Poissons Fossiles.. At the late 
Meeting at Glasgow, this enigma found its solution by our recog- 
nising in the College Museum some of the most perplexing charac- 
ters of the Clashbinnie fossil in two large specimens of Eurypterus 
in sandstone from the coal-field of that neighbourhood. We had 
before seen, at the Edinburgh Meeting, a remarkable fossit Crus- 
tacean, nearly of the size and form of a large Molucca crab, found 
by Dr. Simson in the carboniferous limestone of Kirkton near Bath- 
gate, between Edinburgh and Glasgow; and Dr. Harlan had de- 
scribed and figured a smaller species: of Eurypterus from the ear- 
boniferous limestone of the United States (see Fourth Report of 
British Association, 1834, p. 643). We have, therefore, now ex- 
tended our knowledge of the range of this very remarkable family 
of Crustaceans from the sandstone and limestone of the coal forma- 
tion downwards into the old red sandstone. 
M. Fischer de Waldheim has lately discovered a new species of 
Eurypterus, J. tetragonophthalmus, in the transition formation of 
Podolia, nearly allied to the small species in the grauwacke of West- 
moreland in New York, on whieh this genus was founded by Dr. 
Dekay. (Annals of the Lyczeum of Nat. Hist., vol. i. p.375, pl. 29.): 
FOSSIL ARACHNIDANS. 
In the family of Arachnidans we have an account by M. Corda, 
in the Report of the National Museum of Bohemia, 1839, of a 
second new genus of fossil Scorpioid, Microlabis Sternbergii, dis- 
covered by the late Count Sternberg in 1838, in the same quarry 
-with the new genus Cyclophthalmus, found by him a few years before 
in a similar sandstone of the coal formation at Chomle, near Rad- 
nitz, in Bohemia*. M. Corda places this new fossil in the class of 
Pseudo-scorpions, near the Chelifer and Obisium of Leach: it is 
larger than the living Obisiwm carcinoides. . In this, as in the Cy- 
clophthalmus Sternbergii, the skin is preserved in several parts of the 
bedy in the state of a brown, semi-transparent, horn-like substance, 
over which pores of the trachez and indications of hairs are di- - 
spersed at regular intervals. The enduring nature of the peculiar 
substance (chitine or elytrine), of which, like the elytra of beetles, 
the skin of scorpions is composed, explains the cause of its perfect 
preservation in such ancient sandstone. M. Corda justly considers 
these two fossil scorpioids of Bohemia (the only two of which any 
aecount has been yet published) to be among the most remarkable 
discoveries of modern times. 
The Marquis of Northampton has recently acquired four new 
species of fossil spiders, one of them imbedded in the lithographic 
stone of Solenhofen, the other three from the freshwater formation 
of Aix. The Solenhofen fossil has ten legs, and is considered by 
* Figures of this unique fossil are given in pl. 46’. of my Bridgewater 
Treatise. 
