I 12 THE OPOSSUMS 



DIDELPHYS PUSILLA. 



Didelphys pusilla. Desmerest, Mamm. p. 261, Microur sixie 

 me, ou Microure nain Azara Quad, du Paraguay. Vol. i., p. 

 304. French Trans. 



Description. Fur short and soft, above mouse 

 grey, beneath whitish ; eye surrounded with black, 

 the black most extended in front, above eye whitish, 

 a spot of yellowish-white beneath the eye; tail naked. 

 Length from nose to root of tail, 3 inches 4 lines ; 

 tail, 3 inches 8 lines ; ear, 6 lines, width, 4? lines. 



Habitat Paraguay. 



I have never examined a specimen of this species. 



THE YAPOCK OPOSSUM. 



Chironectes Yapock. 

 PLATE IV. 



Chironectes Yapock Desm. Mamm. p. 261. Spe. 400. Lutra 

 memina Zimmerm. Geogr. Zool. 



Didelphys Palmata. Geoff. 



Description. Form moderately stout ; tail thick, 

 longer than the head and body taken together ; ears 

 moderately large ; fur soft and woolly ; ground colour 

 of the upper parts of the body grey, a broad transverse 

 sooty-black mark runs across the shoulders, a second 

 large dark patch crosses the middle of the back, a 

 third crosses the haunches, and lastly there is another 

 behind this which extends partly on to the tail, is 



