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Show 668 MR. F. E. BEDDARD ON BASSARICYON ALLENI. [June 19, right side than on the left, thus resembling in a curious way the brain of Bassariscus. In both these animals the fissure in question is feebly marked compared with the same fissure in the brain of Fig. 5. Brain of Bassaricyon alleni. A, dorsal view; B, lateral view. Cercoleptes. In a brain of the last mentioned animal which I have been able to study, I found a curious likeness to Bassaricyon (and Bassariscus) in tbe fact that this fissure did not quite reach the margin of the pallium. The sagittal gyrus is folded upon itself anteriorly as it is in other Carnivora; but there is no fissure upon the reflected part of the gyrus such as occurs in Bassariscus. The only other matter which seems to call for comment is the presence of a bridging convolution between the parietal and the sagittal gyrus on the left side of the brain. In the brain of Bassariscus this occurs on the right side. In the brain of Cercoleptes there is no bridging convolution on either side. The Lungs and Heart. On the right side there are three lobes of the lung, of which the lowest is the largest and the middle one the smallest. On the left side there are two lobes about equisized. In addition to these there is a small ventral unpaired lobe. The heart gives off two main branches from the aortic arch-an innominate and a left subclavian. The Muscular Anatomy. Comparatively few of the genera of Arctoid Carnivora have been investigated as to their muscular anatomy. What is already known about the subject is summed up by Messrs. Windle and |