wilmston: new or little known extinct vertebrates. 



75 



S. neeator. F. leo. F. maxima 



Length of humerus 384 • ■ • • 290 . . . . 429 



Thickness of distal end 87 ... . 52 ... . 72 



Width of distal end 



Antero-posterior diameter prox- 

 imal end 



Length of radius 



Greatest diameter of head 



Least diameter of head 



Greatest diameter distal extremity 



Width of shaft at middle 



Length third metatarsal 



Width proximal end 



Depth of proximal end same. . . . 



Length fifth metacarpal 



Length of tibia 



Width proximal extremity 



Width distal extremity 



86 

 260 

 44 

 23 

 60 



25 



^25 



25 



35 



120 



270 



80 



60 



M. eras 

 Kidens. 



313 

 48 



79 



84 



-^58 

 40 

 28 

 5S 

 30 



'25 

 22 



?,?> 



72 



■94 



57 



40 



Dlnoto- 

 mius. 



240 

 30 

 73 



-34 

 61 



41 



<?) Mylodon harlani Leidy. 



Some time ago Mr. McLaughlin, editor 

 •of the Berne Press, sent to the museum 

 a bone of considerable size which had 

 been obtained sometime previously from 

 a well in Seneca of this State. The bone 

 was so robust and peculiar that it was 

 some time before I recognized its true 

 ■character. Comparison with the figure 

 and description of the tibia of Mylodon 

 Jiarlaiii given by Leidy in the second 

 volume of the transactions of the Wagner 

 Free Institute of Science renders it very 

 probable that it belongs with that species, 

 which has been found in Missouri. The 

 bone was taken from about thirty feet 

 below the surface, in alluvium. Because 

 of the rarity of edentate remains in this 

 state, I have thought it desirable to figure 

 the specimen. 



The surface for articulation with the 

 tibia looks upward, inward and backward, 

 and is elongate oval in outline, nearly flat 

 transversly and gently concave longitu- 

 dinally. The shaft near the middle is 

 ■ovate in shape, with the posterior margin 



Fibula of Mijlodon (?) one-third 

 natural bize Cutarnal view. 



