ANCODON GOEEINGEI. 
185 
C. 8836. Left nlna, wanting tlio distal end. This specimen shows that this hone is long and slender. 
The dimensions (in centimetres) are : — 
Length of sigmoid notch 4’7 
Height of olecranon process above articulation 5*5 
Length of bone so far as preserved 38 
C. 8805. Left os inuominatum (text-fig. GO). The long axis of the ilium (il.) is nearly on the same 
straight line as that of the ischium (isG.). For a short distance in front of the 
Text-fig. 60. 
Left os innominatum of Ancodon gorringei : A, from side ; B, from below. 
acet., acetabulum ; foramen formed by closure of the cotylar notch (the passage into the acetabulum is 
marked by a line from/.); iZ., ilium ; isc., ischium ; isc.<., ischial tuberosity; Z.i., pit for ligamentum 
teres ; m., pit for attachment of a muscle, probably the rectus femoris ; obt.f., obturator foramen ; 
pt., pectineal tubercle ; yjw., pubis ; sac.s., surface for sacrum ; sym., sympbysial surface of pubis, 
i nat. size. 
acetabulum the upper and lower borders of the laterally compressed neck of the ilium are 
nearly parallel, then the bone expands greatly into a roughly triangular region, the inner 
(sacral) face of which bears a large and clearly defined surface for the sacrum (sac. 5.) ; 
this surface is bounded ventrally and separated from the lower border of the bone by a 
rounded ridge. The upper edge of the ischium is thin and sharp, and there is a slightly 
developed superior ischiadic spine ; posteriorly the bone expands and bears a large 
2 B 
