Tootli-marlxS of Thylacoleo. 99 



as typical of the cuts with which we are now dealing. The frag- 

 ment of bone measures 52 mm. in length, 17 mm. in width, 

 and 6 mm. in thickness. It has been cut through longitudin- 

 ally, as if by a pair of curved shears, the edge of the bone show- 

 ing no broken fracture. The clean cut, which has a very 

 characteristic form, slopes slightly, and its exact shape may be 

 seen by reference to the figure. In some instances the original 

 cut has been continued by a line of fracture along the length 

 of the bone, as, for example, is probably the case on the right 

 side of the Fig. 7, Plate XXXVIL, and when this occurs it would 

 be naturally impossible to say exactly where the cut ends and the 

 fracture begins, more especiallj'- as most of the bones are slightly 

 weathered. The cuts on Figs. 5, 6, Plate XXXVIL, which are re- 

 spectively 5 and 7 mm. in thickness, agree very closely indeed with 

 the one above described (Fig. 4, Plate XXXVIL), and it is quite 

 evident that they have all been made by the same agency. 



In other bones — as for example, Figs. 8, 9, 10, Plate XXXVIL, 

 and many others — the edges of the bones show, not what appears 

 to be one single cut, as in the first-mentioned specimen, but a 

 considerable number, as many as nine in Fig. 8, Plate XXXVIL 

 The cuts, in some instances, as in Fig. 10, Plate XXXVIL, are so 

 directed as to give the bone a pointed end. Other bones, as in 

 Figs. 13, 14, 17, Plate XXXVIL, have a terminal diagonal cut, 

 producing again a pointed end. Fig. 12, Plate XXXVIL, is of 

 the same type, but evidence of three cuts is very plain. Fig. 14, 

 Plate XXXVL, and Figs. 17, 18, 19, Plate XXXVIL, show 

 very characteristic concavities, as if the bone had been partly 

 cut and then fractured along a curved line. The bone represent- 

 ed by Fig. 18, Plate XXXVIL, shows an even and regular con- 

 cavity on its inner side. On the outside, as seen in the figure, 

 this concavity is confined to only half the thickness of the bone, 

 the exterior half being broken into a large and more irregular 

 curve. In Fig. 17, Plate XXXVIL, the contour of the cavity is 

 quite regular; one end has been fractured by a diagonal cut. 

 Fig. 19, Plate XXXVIL, has two concavities, one on each side of 

 the bone, one slightly in advance of the other. The curves of 

 these concavities are much smaller than in the other specimens ; 

 one, particularly, seems as if it had been formed by several blows 

 or applications of some instrument, by which small pieces were 

 broken out, leaving a somewhat jagged edge. From the deepest 



8a 



