500 
LONG-TAILED OPOSSUM. 
Mr. P. had not an opportunity of contemplating 
the living animal, but took his description from a 
figure. 
VAR. ? 
Among some drawings in Mr. White's collec- 
tion, I observed a figure which in every respect 
seemed to agree with the above animal, except in 
having the tail of the same colour with the body 
except near the tip, where it was marked with a 
bar of black, the tip itself being white. This draw- 
ing was not more than half the size of the preced- 
ing species, but as no particular size was specified, 
and as there was reason for supposing it to relate 
to the former animal, I here place it as a variety 
only. 
LONG-TAILED OPOSSUM. 
Didelphis Macroura. D. hypochondriis prolixis Dolitms, supra 
cinerea, suhtus albida cauda longissima attenuata nigra* New 
Holland Zoology, No. 3. p. 33*t. 12. 
Ash-coloured Opossum, whitish beneath with lateral flying 
membrane, and very long black tail. New HolL ZooL p, 33, 
This species is about the size of a black rat, 
and is of a dark or brownish grey above, and 
whitish beneath : the head and neck are also whit- 
ish, but a dusky stripe runs along the top of the 
head almost to the nose: the ears are whitish, 
moderately large, and slightly rounded : the up- 
