the European Certhiidse. 549 



iu the browner and warmer tones of its plumage. For this 

 apparently undescribed form I propose the name 



Certhia pamiliaris pyrenaicAj subsp. nov. 



Similar to C. f. costce, but generally much browner 

 above. As with C. /. britannica, this eftect is partly pro- 

 duced by the whitish centres to the feathers on the back 

 being broadly edged or washed with tawny. Rump bright 

 tawny. Underparts pure white. Wing about 65 or 

 66 mm. 



Types in the Tring Museum, ^ ? . Reine Hortense, nr. 

 Cauterets (altitude 1400 metres), 30.xii.06 and 6.ii.07. 

 (Note. — When he published the account of the Certhiidse in 

 his ' Vogel der palaarktischen Fauna,' Dr. Hartert had not 

 seen these Pyrenean specimens.) 



According to my investigations we now have the following 

 forms of C. familiaris inhabiting comparatively well-defined 

 areas in western Europe : — 



A. Short-billed birds. 

 i. Certhia familiaris familiaris. 

 Certhia familiaris Linnaeus, Syst. Nat. 1758, p. 118 : 

 Sweden. 



Rumania, E. Germany (Hartert), Scandinavia and N. 

 Russia, across northern Asia. 



ii. Certhia familiaris macrodactyla. 



Certhia macrodactyla Brehm, Handb. Nat. Deutsch. 1831, 

 p. 208 : Germany. 



The forests of western Germany, Belgium, and N.E. 

 France (Vosges Mountains). 



iii. Certhia familiaris britannica. 



Certhia britannica Ridgway, Proc. U.S. Nat. Mus. v. 

 1882, p. 113: England. 



The British Isles. {Note. — Irish specimens ai'e inclined 

 to be very tawny in coloration, and often have the belly and 

 flanks washed with buff.) 



SER. X. VOL. I. 2 P 



