EXPLANATION OF PLATE 46". 
75 
argillaceous Schist, sufBciently hard to be used for 
building. Nat. size. (V. I. p. 407, Note.) 
Even the skin, haii-s, and pores of the tracheae of 
this animal are presei’ved. 
In the same stone are many carbonized fragments 
of Vegetables, and on the right of the body is a 
large fossil N ut (a) ; this side of the animal has 
been laid open by cutting away the stone. (Stern- 
berg.) 
2. Lower surface of the same animal, discovered in split- 
ting the stone in search of fossil Plants ; nat. size. 
Near the point of the right claw, is a fragment of 
the tail of another and larger Scorpion. (See PI. 46", 
Fig. 13.) We have here also the side of the same nut 
that is seen in Fig. 1. a. This trifid nut exhibits 
traces of the structure of the outer coating in which 
it was inclosed. (Sternberg.) 
3. Magnified representation of the Head and Eyes. See 
V. I. p. 407. (Sternberg.) 
4. Magnified jaw, armed with teeth, and partially covered 
with minute hairs. (Sternberg.) 
5. Hairs on Fig. 4, highly magnified. (Sternberg.) 
6. Magnified representation of a portion of the skin, 
consisting of two divisible layers. See V. I. p. 403. 
(Sternberg.) 
7. Magnified impressions of muscular fibres connected 
with the legs. (Sternberg.) 
Plate 46". V. I. p. 409. 
Fossil Insects, Arachiidans, and Limuhis. 
The following description of the Insects represented in 
this Plate is founded on information received from Mr. 
Curtis and Mr. Sainouelle. 
