398 



Mr. P. R. Lowe on the Common 



In this connection, however^ a series of immature birds^ 

 collected by Mr. D. A. Bannerman in the Canaries^ is some- 

 what contradictory, for while some undoubtedly belong to the 

 pale western race, others seem nearer the dark eastern race. 



With regard to the northerly extension of the range of 

 these two subspecies (C. h. major and Larus f. affinis), it 

 is interesting to reflect that the Wyville-Thomson, Faroe- 

 Icelandic, and Icelandic-Greenland submarine ridges seem 

 to play an important part in the direction of furnishing 

 a well-marked migratory track for these and possibly other 

 western subspecies, to high latitudes. 



Finally, we may call attention to the fact that the smaller 

 darker continental race (C h. hiaticola) is by no means 

 uncommon in the British Isles during at least the autumn 

 migration, and that it is not to be confused with the Lesser 

 Ringed Plover [C. duhius), which is a very rare migrant to 

 our shores, but which may be at once identified by the 

 absence of white in the shafts of all the primaries except 

 the first. 



The following list of some of the birds examined will give 

 a fair idea of the relative wing-measurements and distribution 

 of the races. 



Gharadnus hiaticola hiaticola L. 



Wing. 

 mm. 

 23 . vi . 77. Yenesei, Siberia ... 130 

 fiS, Damietta, Egypt.. 129 



78. Norway 126 



Corfu 126 



Gennesaret, Pales- 

 tine 126 



77. Yenesei, Siberia ... 125 

 , 85. Manda Island, 



B. E.Africa ... 124 



77. Florence 124 



78. Cyprus 117 



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23 



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2- 



9 



V 



$. 



9 



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5- 





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2- 





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22. 



vii 



S- 



16 



xi 



2. 





V 



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1 



. X 



Charadrius hiaticola major Seebohra. 



Wing. 

 mm. 



19 . vi . 56. Holy Island, Nor- 



thumberlaud 136 



iv . fi6. Dungeness, Kent . 135 

 4 . viii . 75. Twin Glaciers 



Valley, Arctic... 135 

 V . 63. Beadnell, North- 

 umberland 135 



24 . vi . 05. Brancaster, Nor- 

 folk 134 



21. viii. 67. Kingsbury 131 



24 . vi . 05. Brancaster, Nor- 

 folk 131 



10 . V . 71. Pagham Harbour, 



Devon 130 



10 . vii . 80. Roinnev Marsh, 



Kent'. 129 



26 . iv . 72. Gibraltar 127 



20 . iii . 72. Algeciras, Gib- 



raltar (moulting 

 wing-feathers). 



