. The cyclopædia of anatomy and physiology. Anatomy; Physiology; Zoology. 166 PELVIS. from the coalesced transverse processes by two faintly-marked longitudinal grooves. The transverse processes of the true sacral ver- tebrae present a very prominent framework of ridges anteriorly (jig. 105.), which have a direction upwards and backwards as well as outwards, the most strongly marked being opposite the acetabula (/>). They are coalesced on the superior aspect, by a thin plate of bone only. The sacrum, as seen from above (jig. 104-.), has a diamond-shaped ap- pearance, and is marked out from
. The cyclopædia of anatomy and physiology. Anatomy; Physiology; Zoology. 166 PELVIS. from the coalesced transverse processes by two faintly-marked longitudinal grooves. The transverse processes of the true sacral ver- tebrae present a very prominent framework of ridges anteriorly (jig. 105.), which have a direction upwards and backwards as well as outwards, the most strongly marked being opposite the acetabula (/>). They are coalesced on the superior aspect, by a thin plate of bone only. The sacrum, as seen from above (jig. 104-.), has a diamond-shaped ap- pearance, and is marked out from the iliac and ischial elements by a faintly-marked suture (c). The sacrum in Birds is a continuation of the line of the great dorsal curvature. The coccyx is generally short, composed of from five to nine pieces, generally perforated for the spinal marrow, and curved dorsally, as we have observed before in some Rodents, terminating in a spinous-shaped piece (see jig. 107., a). The ilia are comparatively short and narrow : with a very short cotylo-sacral rib or shaft (e), directed upwards and forwards, and expanding into a wing (d), concave or grooved supe- riorly. The a/a is prolonged forwards on the posterior surfaces of the ankylosed lumbar vertebra?, coalescing with their spines and transverse processes; and also extends back- wards to a less degree, to coalesce with the upper bifurcation of the anterior extremity of the ischium, in a sort of buttress (f], which projects externally anil overhangs the aceta- bulum posteriorly, presenting, below, a facet, against which rests the trochanter of the femur, and which is apparently a continuation of the articular cotyloid surface. This but- tress is continued from the ischium inwards, as a strong ridge, to the extremity of the strongest of the sacral transverse processes before mentioned (Jig. ), opposite the Fig. Inferior or ventral view of the pelvis of the Par- tridge—natural size: a, coalesced bodies of sacral ver
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