E. TRINKAUS 



Fig. 2 Dorso-lateral views of the left and right ilia and ischia, with the caudal sacrum; x 0.44. 



Table 2 Osteometries of the Gough's Cave 

 sciatic notches. 



ilia, acetabulae and greater 





Right; 1.1/23 



Left; 1.1/24 



Iliac blade height (M-10) 



100.0 



100.9 



Iliac blade depth (M-ll) 



9.2 



(8.0) 



Superior iliac breadth (M-12) 



166.0 



164.5 



Inferior iliac breadth 1 



119.4 



(113.0) 



Arcuate line chord 2 



- 



59.0 



Arcuate line subtense 3 



- 



3.5 



Acetabular height 4 



53.8 



53.5 



Acetabular depth 5 



24.0 



26.1 



Acetabulo-sciatic breadth'' 



35.6 



35.2 



Greater sciatic notch height 7 



54.6 



(50.0) 



Greater sciatic notch breadth 8 



40.9 



42.2 



1 Maximum direct length around the anterior inferior iliac spine and the posterior 



inferior iliac spine. 



: Anterior margin of the auricular surface to the point on the arcuate line where a 



line, perpendicular to the arcuate line and passing through the depth of the psoas 



groove below the anterior inferior iliac spine, meets the arcuate line (Ruff, 1995). 



' Maximum subtense from the arcuate line chord to the arcuate line. 



1 Acetabular margin height from the margin adjacent to the anterior inferior iliac 



spine to the most distant point on the inferior acetabulum, measuring only on the 



subchondral bone of the acetabulum proper. 



5 Maximum depth from the height chord to the subchondral bone. 



"Miminum distance from the postero-lateral margin of the acetabulum to the ischial 



margin of the greater sciatic notch. 



7 Direct distance from the middle of the ischial spine to the middle of the posterior 



inferior iliac spine. 



* Direct distance from the middle of the posterior inferior iliac spine to the posterior 



ischial margin of the greater sciatic notch, taken perpendicular to the ischial margin 



between the notch itself and the ischial spine. 



muscular attachments. Externally, the gluteal abductor surfaces 

 show little relief. One can perceive a M. gluteus minimus line curving 

 from the iliac crest to the greater sciatic notch region, and there is 

 smooth vertical ridging on the surface dorsal of that line. Internally, 

 there is erosion on both sides but the preserved areas are evenly 

 concave and smooth. The iliac portions of the arcuate lines are 

 rounded angles from the acetabular area to the auricular surfaces. 



The cranial surfaces of the greater sciatic notches are smooth 

 bilaterally. The right one, however, presents a prominent pre-auricu- 

 lar sulcus, with some rugosity but mostly resorptive bone. The 

 well-preserved left one, in contrast, is smooth with no trace of a pre- 

 auricular sulcus. 



The iliac crest is moderately developed where it is preserved, with 

 minimal rugosity. Similarly, the anterior superior iliac spine is 

 modest in its development, producing only a small concavity in 

 lateral view between it and the anterior inferior iliac spine (at least on 

 the right side, where the bone is intact). The anterior inferior iliac 

 spines are prominent and thick, but there is no lateral rotation of the 

 spines or internal concavity to them. Yet, they are accompanied by a 

 distinct sulcus between them and the acetabular margin, ca. 1.5mm 

 wide on each side. The attachment area for the long head of M. rectus 

 femoris is evident but not accompanied by marked rugosity or 

 surface bone resorption. 



Ischia (Table 3; Figs 2, 3). The ischial tuberosities are generally 

 smooth with prominent proximal depressions for the insertions of 

 Mm. semimembranosus . They are clearly differentiated from their 

 adjacent acetabular margins as well as from the ventro-lateral surface 



