BRITISH MAMMALS 
by a band of grey. Above the line and extending backwards in a 
rapidly widening triangle which includes the black eye patch, the skin 
is lead coloured. A narrow black line extending backwards to the 
ear and from the level of the posterior cankus, forming a conspicuous 
relief to the lead-coloured area." 
The colour of the upper parts of the body is black, broken up by 
a band of white on the sides which blends into another patch of 
pale brownish buff extending towards the tail. The throat and belly 
are white with black markings surrounding the vent. The flippers are 
black, with a stripe of the same colour extending from their base to 
the corner of the mouth. 
The White-sided Dolphin inhabits the North Atlantic ; ranging from 
as far north as Greenland to the British Islands. It is also found 
along the eastern shores of the United States. 
Dr. Gray first described the species from a skull found in the 
Orkneys, and an adult female was also obtained there in May 1835. 
A party of about twenty were taken together in Scapa Bay, Kirkwall, 
on May 21, 1858. One has been recorded from Ardrishaig and another 
at Dunrobin stranded in April 1906. 
A few have been taken in Ireland, one as late as 1916 on the 
coast of Mayo. Like other Dolphins, this species moves about in 
' schools,' frequently leaping clear of the water as it sports among the 
waves along with its companions. 
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