584 Researches- in Fossil Zoology. 



Neufchatel, with the green marl lying beneath it, belong to 

 the cretaceous group. 



My examination of Vertebrata from the tertiary marl slate 

 of CEningen rests chiefly on the Chalydra Murckisomi, Bell, 

 and upon the rodent of the same formation. The remains of 

 the turtle in the Zurich collection afforded me a new idea 

 of these animals in general, and particularly of the mail- 

 bellied turtle, [Bauch panzer]. I have greatly reduced the 

 species of fossil rodents described as occurring at CEningen. 

 Three distinct species from this formation have always been 

 allowed. I had occasion to examine the remains upon which 

 these species are founded. I have determined that they be- 

 long to a single species only : this has been called by M. Ko- 

 nig, Anosma, which cannot be correct ; for as I tried to take 

 away the matrix that the fossil might be more distinctly seen, 

 I found some very small cutting teeth [Schneiderzahn] in the 

 upper jaw-bone; moreover, they cannot be those of Ancema, 

 from the number of the toes. This animal, on the contra- 

 ry, seems to be a kind of hare, similar to Lagomys : I shall 

 describe it as Lagomys (Eningensis ; it belongs to the few 

 and rare fossils of the CEningen slate, and of it I know several 

 specimens : there are at least three in the Zurich collection. 

 The best 1 have seen are preserved in Carlsruhe, of which I 

 have made drawings. 



The tertiary deposits of Switzerland are richer in fossil 

 bones than I had expected. These occur in solid sandstone, 

 sand, clay, and pit coal, of the Molasse. The lithological 

 character of this great formation seems not to be without re- 

 ference to the importance of the animals ; and the structures 

 of one and the same nature appear to differ in this respect, — 

 their difference of situation. 



Although I have not yet finished my examination, still I 

 am able to give some explanation of the manifold variety of 

 the fossils of the Swiss molassic formation, and to divide 

 them as follows. From the solid molasse-sand of Bollengen, 

 which is surrounded by pebbles of primitive rocks, was taken 

 half of the lower jaw-bone of a new Palacotherium, which I 

 shall describe as Pal. Ichingii. This animal is in size be- 

 tween Pal. magnum and medium, or crassum. From fine 

 molasse-sand near Buchberg, I examined the half of a most 

 interesting lower jaw-bone of a young Mastodon, in which it 

 may be seen that thefirst grinders had two, and the second and 

 third three rows ; the third grinder was still concealed in the 

 jaw, and was discovered by accident. 



But the molasse sandstone from Stein on the Rhine, near 

 Schaffhausen is much richer. I examined from that locality 



