iQiQ-l OrienlalWoodpeckers and Barbels. l87 



(5) Pic us canus guerini. 



IHcus guerini Malli. Rev. et Mag. Zool. 1849, p. 539. 



Type locality. China (apud Malherbe's Monograph). 



Tliis is a i)ale form, intermediate between typical P. canm 

 canus inhabiting- the extreme nortli of China etc., and tlie 

 darker form inhabiting China south of the Yangtse Kiang 

 river. In size tlie two appear to be much the same^ 

 37 specimens of this subspecies averaging 14.3 mm. as 

 against just under 144 mm. for 53 specimens of the southern 

 bird. 



Bill about 28 mm. and ranging from 2G to 30 mm. 



Habitat. The provinces of Ningpo, Cliinkiang, Hu])ch, 

 Icliang, and Shcnsi, north of the Yangtse river. 



(0) Picus canus setschuanensis. 



Hesse, Orn. Monatsber, 1911, p. 194. 



Type localitij. Setchuan. 



A, darker, duller bird than that found noith or south of 

 the Yangtse, nearly as dark, but not so dull as sordidior, 

 from which it also dill'ers in being decidedly smaller. 



Wing average 145*5 mm. ; bill about 29 nun., and varying 

 between 26 and 32 mm. 



Habitat. Setchuan only, so far as is known at present. 



-[ (7) Picus canus ricketti, subsp. nov. 



Tyjjes. S 1914.4.8.261. F. W. Styan Coll. Brit. Mus. 

 ? 1914.4.8.262. 



Type locality. Fokien, China. 



Considerably darker than yuerini, but, as shown above, 

 not differing from it in size. 



Wing about 144 mm., and varying between 135 and 

 151 mm. Bill about 28 mm. 



Habitat. There are large series from Foochow and Fokien 

 in the British Museum collection, and about half a dozen 

 birds from localities farther west and south. 



I can find no name for this bird, which has generally been 

 considered to be the same as tancolo from Formosa, and I 

 have therefore tlie pleasure of naming it after Mr. C. B. 



