| OCR Text |
Show 678 MR. F. G. PARSONS ON THE [Nov. 20, are attached to it, close together, about its middle K In all other Porcupines the second rib is attached to the junction of the first and second sternebrae, as it is in most other mammals. Fig. 2. Lumbar Vertebrae, showing the position of the intercentra. a a a. Intercentra. The xiphisternum is long and narrow and tipped with a crescentic piece of cartilage. There are fourteen ribs, of which eight are vertebro-sternal, two vertebro-costal, and four vertebral. The clavicle is thin and curved and is cartilaginous at each end. Internally a rod of cartilage half an inch long connects it Avith the sternum, while externally there is a leaf-shaped cartilage which overlaps the coracoid process. The clavicle is firmly attached to the coracoid by the coraco-clavicular ligaments, but there is practically no connection between it and the acromion. 1 In another specimen at the British Museum, the second cartilage was in its normal position. |
