ANCODON GOEKINGEI. 
185 
C. 8836. Left ulna, wanting the distal end. This specimen shows that this hone is long and slender, 
'fhe dimensions (in centimetres) arc : — 
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 innominatum (text-fig. 60). The long axis of the ilium (<7.) is nearly on the same 
straight line as that of the ischium (isc.). For a short distance in front of the 
Text-fig. GO. 
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 /.) ; il., ilium ; isc., ischium ; isc.t., ischial tuberosity ; l.t., pit for ligamentma 
teres-, m., pit for attachment of a muscle, probably the rectus femoris', oht.f., obturator foramen; 
jyt., pectineal tubercle ; gm., pubis ; sac.s., surface for sacrum ; sym., symphysial surface of pubis. 
L 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.s.) ; 
this surface is bounded ventrally and se{)arated 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 
