EXPLANATION OF THE PLATES AND WOODCUTS. 



cb. Cuboides : p. 93. 

 m. Metatarsals : p. 93. 



1. First or proximal phalanx: p. 94. 



2. Second or middle phalanx : p. 94. 



3. Third, distal, or unguial phalanx : p. 95. 



Plate XL 



Figs. 1 and 2. Os scaphoides (two-thirds natural size). 



a, Articular surface for the astragalus. 



b, Descending process. 



c, Articular surface for the external cuneiform. 



d, Ditto, ditto, middle cuneiform. 



e, Ditto, ditto, internal cuneiform. 

 Figs. 3 to 5. Astragalus (two-thirds natural size) : p. 90. 



a, Articular surface for the scaphoides : p. 91. 

 b and c, Articular surfaces for the calcaneum. 

 Fig. 6. Os cuboides (two-thirds natural size). 



Plate XII. 1 



I 



J 



I 



Fig. 1. The three phalangeal bones of the second toe. .| 



Fig. 2. Distal articular surface of the proximal phalanx of the same toe. i 



Fig. 3. Ditto, second phalanx of ditto. 



Fig. 4. Distal articular surface of the middle phalanx of the third toe. | 



Fig. 5. Proximal articular surface of the unguial phalanx of the second toe. j 



Fig. 6. Under surface of the unguial phalanx of the third toe. j 



(All the above bones are parts of the left hind-foot, and are represented of the natural ] 



size.) ' ; 



Plate XIII. 



Fig. 1. Modifications of the pelvis and spine of the Dasypus tricinctus, in relation to the sup- ' 

 port of the bony dermal covering (natural size) : p. 98. 



a, Spinous process of the lumbar vertebra. | 



b, Transverse process of ditto. ' 

 c c, Sacrum. \ 



d, Ilium. 



e. Ischium. 

 /, Pubis. 



g. Acetabulum. • j 



