and a quarter inches ; across the chines agian six ines 
its length (from.D to. H) is six inches, | 
Figs 3) Pe ” : Fig. 4. 
The structure of the upper and lower articulating surfaces, the 
great size and ontward situation of the great tuberosity, the prom- 
inence on the outer part of the bone, together with the marked 
resemblance, so far at least as the adaptation of means to ends 
goes, between this bone and that of the ant-eater, led me to ima- 
gine that it was probably the humerus of a large animal which 
had the power of abducting the bone somewhat, of freely rota- 
“ting the fore-arm, and who obtained his food by digging. Whe- 
ther it belonged to the same animal with the tooth above de- 
scribed, which I suspect may have been the case, I have not the 
means of determining with certainty. There are apparent and 
essential differences between Cuvier’s plate of the humerus of 
the Megatherium and the specimen under examination, although 
there. appears to be some considerable resemblance. It still less 
resembles that of the fossil elephant, or any other I can find fig- 
ured. ._My means of reference however are so scanty, that it 
would be folly for a tyro in paleontology to attempt to name it, 
and I must mPre, it for wigan and others better qualified to ane i 
longs, if not to some one of the megatherio! 
