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Show 672 MR. F. E. BEDDARD ON BASSARICYON ALLENI. [June 19, The Plantaris is totally absent. This is very unusual, but there is no possible doubt about it. The Soleus, on the other hand, is present. The muscle arises from the head of the fibula, and so it cannot possibly be confounded with the plantaris, which of course has a femoral origin. Moreover its fibres also partly arise from the septum between itself and the peroneal. Its tendon joins that of the gastrocnemius. Of the Flexores tibialis and fibularis and the Tibialis posticus I have nothing to say save that they were present and quite normal. The Tibialis anticus has a double tendon of insertion, and the muscle itself was double the smaller and lower portion, arising entirely from the fibula, while the larger half arose from both tibia and iibula. The lower half appears to be tbe equivalent of the extensor proprius hallucis, since its tendon is continued to the end of that digit; while the tibialis anticus proper is attached to the base of the first metacarpal by its much stouter teudon. The Extensor longus digitorum is not remarkable. It has a long tendon of origin from the femur and a fleshy origin from the head of the fibula. I found the three Peroneals mentioned by Perrin in Cercoleptes. Osteologg. As has already been mentioned, both species of Bassaricyon have been described as regards the skull and teeth by the three gentlemen who have dealt with those two species. In order to make the present account of the skeleton more complete, I shall recapitulate the main features in the skull as well as of the other bones, comparing them with the corresponding bones of Cercoleptes. On the palatal aspect of the skull, it is seen that the palate of Bassaricyon is wider than that of Cercoleptes, and increases in width from before backwards as far as the end of tbe series of teeth ; its form is thus roughly triangular, as compared with an oval form in Cercoleptes. This feature appears to be more marked in B. alleni than in B. gabbi. The length of the zygomatic arch from before backwards where it becomes confluent with the tooth-line is greater than in Cercoleptes. The anterior end of the palate at the insertion of the incisors is almost semicircular iu outline in Bassaricyon, and nearly straight in Cercoleptes. In Bassaricgon the tympani bullae extend laterally and posteriorly nearly to the edge of the skull • in Cercoleptes there is a considerable flattened area of bone in this situation. The paroccipital processes, which are not long in either genus, thus come to lie close to the tympanic in Bassaricgon and some way away in the Kinkajou. On the lateral aspect of the skull, the chief difference which is apparent is that the zygomatic arch in Bassaricyon is arched more strongly upwards than in Cercoleptes. The infra-orbital foramen is visible on this view in CercolepAes; it is not in Bassaricyon. The last molar lies behind the maxillary part of tbe zygomatic arch in Cercoleptes; this is not the case with Bassaricyon, |