E. HARTERT : BRITISH PECULIAR FORMS. 209 



number of birds peculiar to the British Isles caiinot fall 

 short of twenty. 



Looking- at this small list the following* facts are notice- 

 able : — 



1. All, with the exception of three, belong- to the 

 "Passeres." 



2. Only three can be called migrants, and even those 

 {i.e. the two Wagtails and the Robin) are partly resident, 

 especially the Robin. 



3. There is a tendency for these British races to be 

 duller or darker in colour, and smaller than their con- 

 tinental representatives. 



1. — Garrulus glandarius rupitergum Hart. 



British Jay. 



Garrulus glandarius rufitergum Hartert, "Yog. pal. Fauiia," 



I., p. 30 (1903 — Great Britain and Ireland; typical 



loc. : Tring). 



British specimens of the Jay differ from continental 

 ones — especially from a series of more eastern examples — 

 by their more uniform vinous upper side, there being no, 

 or hardly any, greyish or slaty wash on the back. The 

 difference is "slight" and can only be seen when a series 

 is compared. 



[The continental G. glandarius glandarius seems to visit 

 the British Isles only sporadically.] 



2.— LOXIA CURVIROSTRA ANGLICA Hart. 



English Crossbill. 



Loxia curvirostra awf/^ica Hartert, "Yog. pal. Faiuia," I., 

 ' p. 119 (1904). 



When I separated the English Crossbill, m 1904, I had 

 examined large numbers and found them to differ from 



