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8.

Both the right and left scapula were used The scapula of a modern ox ^[[illustrated in Plate VII]] is almost typical of ^[[these]] found from Yin-hsü in an unprepared condition. The dorsal side is sharply marked by a crest (s) which divides the whole surface into two portions, known separately as the post-scapula fossa (1) and pre-scapula fossa (3). Other prominent anatomical features are the acromion (a) that ends the inferior part of the crest, and the glenoid fossa (g) and the coracoid process (c) at its anterior end. The superior margin (o)is slmost straight, while the glenoid (h) and the anterior (v) margin converge downwardly.

The ventral side is quite plain and shows no such sharp anatomical features as the dorsal. This plate-like appearance makes it eminently qualified for divination purpose.

b. The plastron.

Since only the bony plates are concerned with us, only these will be described here. Let us quote the description of Dr. Ping ^[[(Plate VIII):]]

"The bony plates of the [[underline]]plastron[[/underline]] are quite clear. Epiplastron somewhat pentagonal, its peripheral margin consisting of two sections of the medial one is convex and comparatively thick and the lateral one is only slightly convex and thinner but longer than the medial, the contral margin slightly concave and other two margins straight. [[underline]]Endoplastron[[/underline]] somewhat trianguloid, with all mar-