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MR. F. E. BEDDARD OX BASSARICYON ALLENI. [June 19, 



right side than on the left, thus resembling in a curious way the 

 brain of Bassanscus. 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. 



Cereoleptes. 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 the 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. Iu the brain of Cereoleptes 

 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. Wiudle and 



