from Oregon. 135 



the above quotation, with great accuracy, described my fossil, 

 although he has omitted to mention a marked projection upon 

 the outer part of the bone, which is to be found on my speci- 

 men, and figured in Prof Silliman's Journal. It is possible, 

 however, that this process may have been broken off in the 

 fossil he was describing, as they are spoken of by that gen- 

 tleman as ^' more or less perfectly preserved." 



In the collection of Mr. Koch there '' are 2 fossil humeri, 2 

 tibiae, 2 portions of the radius, 2 of the clavicle, parts of seve- 

 ral ribs, 2 vertebrae, a cubitus, 24 teeth, 8 of them in their 

 sockets, 2 fragments of a lower jaw with 2 and 3 teeth in 

 situ, 2 fragments of the upper jaw, 5 ungueal phalanges, a 

 sternum of 4 articulated pieces, and a part of the ileum and 

 sacrum." 



From the near approach in the form of these bones to those 

 of the Orycteropus, Dr. Harlan proposes to name his animal 

 the Orycterotherium Missouriensis. From the striking re- 

 semblance which appears to me to exist between my fossil 

 and the humerus of the Ant-eater, and more especially from 

 the inference I have drawn, that the animal of which it 

 formed a part must have been a digging aninial, (opux7<^p, a 

 digger, and ^rip'm, animal,) I know of no appellation which 

 could have been more appropriate than the one proposed. I 

 regret exceedingly that Dr. Harlan's description was unaccom- 

 panied with any drawings, as this would have enabled me to 

 determine positively whether these two animals belonged to 

 the same genus. I strongly suspect, however, for the reason 

 above given, that such was the fact, and with pleasure adopt 

 his generic name. And as his species is designated from the 

 locality, and the locality whence mine was obtained is in an- 

 other territory, the cast, which will shortly be placed in the 

 Cabinet of your Society, will not, I think, be inappropriately 

 named (for the present at least), if it be labelled, the right 

 humerus of Orycterotherium Oregonensis. 



Allow me to make one remark in relation to the tooth de- 

 scribed and figured in the American Journal. I had supposed, 

 until very recently, that the Mylodon of Owen, and the 

 Megalonyx of Dr. Harlan were the same. From a compari- 



