22 RESIDENTS AND MIGRANTS. 
with the rules of zoological nomenclature laid down 
by the British Association. Mr. Sharpe has shown 
(‘ Ibis, 1868, p. 295) that, as the Long-tailed Titmouse 
of Scandinavia (described by Linneus as Parus cau- 
datus) differs from the British species in having a 
white head, the latter cannot bear the name caudatus, 
but should be distinguished as rosea of Blyth, that 
name being the next in order of precedence. ‘The 
white-headed form, however, occasionally occurs in 
this country. I have seen two specimens, as else- 
where recorded*, which were taken in the north of 
England; and Mr. Gatcombe has lately seen one in 
Somersetshiref. 
BEARDED TITMOUSE. Panurus brarmicus (Linneus). 
Resident only in the eastern counties of England, 
where it was formerly much more abundant. It has 
occurred accidentally in Yorkshire (Waterton), Devon 
(Brooking Rowe), Cornwall (Rodd), and the Isle of 
Wight (A. G. More). It appears by common con- 
sent to have been classed with the Tits; but its affinity 
‘to these birds is very remote. In some respects it is 
distantly allied to Emberiza scheniclus; but its more 
direct affinities appear to be with the species of the 
American genus Ammodramus, whose mode of life is 
very similar {. 
* The Birds of Middlesex, p. 59. 
+ The Zoologist, 1872, p. 2943. 
+ See remarks on the internal structure of the Bearded Titmouse, 
by Mr. Tomes, published in ‘ The Ibis,’ 1860, p. 317. 
