€68 THE BEIDGER EPOCH. 



subdiscoid bone with convex outer face. The magnum is as broad as deep 



in front, where its surface is swollen; it is produced behind into a spatulate 



decurved hook. The unciform has a narrow sub-acute hook behind, with 



wide base. 



Measurements. 



M. 



Width of earpals of first row together 0.044 



Width of lunare, outer face 016 



Depth of lunare, outer face 020 



Depth of cuneiform, outer face 020 



Width of cuneiform, outer face 020 



Length of pisiform, outer face 030 



Depth distally, outer face 014 



Width three earpals of second row 038 



Width magnum, outer face 015 



Depth magnum, outer face 014 



Depth unciform, outer face 017 



Width unciform, outer face 020 



Length unciform, anteroposterior 021 



Length magnum, anteroposterior 029 



Total length of earpals 040 



The metacarpals are quite slender. The first only is wanting ; the 

 third is ratlier stouter than the others, while the fourth is considerably 

 "the most slender. Its distal extremity is oblique, with prominent median 

 teel, which is wanting on the superior aspect. The proximal facets of 

 these bones are respectively (2d) 2, (3d) 2, (4th) 1, (.5th) 1. There is a 

 short, shallow groove near the proximal end of No 3. The phalanges 

 corresponding are lost in the specimen. 



Measurements. 



M. 



Length of fifth metacarpal 0.070 



Estimated length of foot 187 



Distal diameter of fifth metacarpal 012 



Proximal diameter of metacarpal 007 



Proximal diameter of fourth metacarpal 012 



Proximal diameter of third metacarpal 017 



Proximal diameter of second metacarpal 012 



The above are taken on the articular faces transversely. 



The pelvis is perfectly preserved. The ischium is but little over half 

 as long as the ilium, measuring from the middle of the acetabulum. The 

 ilium is a triradiate bone, the superior or sacral plate rather shorter and 

 wider than that forming the "crest," which is subsimilar to the pedun- 

 cular portion. The border connecting the sacral plate with the crest is 



