112 THE OPOSSUMS. 



DIDELPHYS PUSILLA. 



Didelphys pusilla. Desmeresf, 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 

 grej;, 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 DesTw. Mamm. p. 2G1. 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 



