48 Two New Species of Fossil Footmarks. 
ten rods of his house, perhaps the largest and most extraordinary 
track yet brought to light in this valley. It is but an act of jus- 
tice, therefore, it seems to me, to affix his name to this most Te- 
markable species, which would have been destroyed by the quar- 
ryman had he not rescued it. The slab containing it, is, indeed, 
considerably mutilated, and only one very distinct track remains. 
But three others of the same animal are obvious, and enable me to 
give its characters with considerable confidence. This iter 
esting slab is about ten feet long, six or eight inches thick, and 
weighs more than half a ton. It is broken open lengthwise, as 
shown in the drawing, fig. 1: and some smaller fragments are 
broken off, some of which are lost. Mr. Moody having allowed 
me to deposit this slab in the Cabinet of Amherst College, I 
have brought the fragments together, and am gratified to 10 so 
much remaining. Besides the large tracks, several rows of smaller 
species are exhibited almost without any loss. Of the large tracks, 
four remain. The second (A, fig. 1,) is the most perfect, poe 
deficient in nothing but the extremities of the two middle toes, ant 
a confusion at the end of the shortest lateral toe.* So peculiar 18 
the shape of this track, and so different its phalangeal impressions 
from those of the feet of any living animal with which I am ac” 
quainted, that I should hardly have dared to describe 1t ae 
single specimen, had I not found its essential features exhibiteé 
the other tracks. Some of these are badly broken, and esi 
indistinct, owing apparently to the peculiar state of the mud W ns 
they were made. Yet enough remains to identify them with ate 
most perfect one just described. It is clear, also, that they W 
6 a 
k, 
* Pres. Hitchcock sent for this Journal an outline sketch of this remanent 
of full size, (twenty inches in length,) which from the magnitude of the plat 
quired for it, is not inserted. 
