. Carnegie Institution of Washington publication. 20 PERMO-CARBONIFEROUS VERTEBRATES FROM NEW MEXICO. obliquely downward and slightly backward and the lower, posterior, facing obliquely upward and slightly forward. The inner surface of the scapula is hidden on both sides in large part, rendering it impossible to describe the subscapular fossa. It is impossible to trace any sutures between the bones, but both coracoids are surely present. The inter clavicle: This bone is very little expanded at the anterior end and is strongly united by deep sutures with the clavicles, resembling very closely i
. Carnegie Institution of Washington publication. 20 PERMO-CARBONIFEROUS VERTEBRATES FROM NEW MEXICO. obliquely downward and slightly backward and the lower, posterior, facing obliquely upward and slightly forward. The inner surface of the scapula is hidden on both sides in large part, rendering it impossible to describe the subscapular fossa. It is impossible to trace any sutures between the bones, but both coracoids are surely present. The inter clavicle: This bone is very little expanded at the anterior end and is strongly united by deep sutures with the clavicles, resembling very closely in this respect the unnamed clavicles and interclavicle from Texas (No. 4390 Am. Mus. Nat. Hist. Cope Coll.) described by Case in PubHcation 145 of the Carnegie Insti- tution of Washington, page 79, figure 26. The posterior portion of the inter- clavicle is nearly straight, gradually becoming narrower toward the posterior end, which is Fig. 9.—Diasparactus zenos Case, X 14. A, anterior view of clavicles and inter- clavicle; B, upper view of right clavicle; C, outer surface of right scapula; D, posterior view of right scapula. The clavicles: These are very strong proximally and higher than the anterior end of the interclavicle. They join the sides of the interclavicle but meet behind it, so that there is a median depression or fossa between the proximal ends of the bones anteriorly. Seen from in front the proximal ends of the clavicles are broader than high, presenting a wide flat face to the anterior edge of the scapula. A few centimeters back the clavicles become suddenly flattened, so that they are very thin antero-posteriorly, in the natural position of the bones, but wide vertically; they continue in contact with the scapula for their full length. The distal ends of the bones become gradually contracted to narrow points. The cleithrum: There is no trace of the cleithra attached to the scapulae on either side, but there are two isolated fragments which appear to be p
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