566 bulletin: museum of comparative zoology. 



areas of the southwest. I never met with it at all in the woods cover- 

 ing the sandstones and shales of the Upper Humber. As pointed 

 out (p. 544), the limestone areas support many plants known elsewhere 

 from western America only. This would seem to indicate a correla- 

 tion between bird and plant life. 



58. Hylocichla aliciae aliciae (Baird). 

 Gray-cheeked Thrush. 



One adult female from Nicholsville, July 8th. 



I made a special effort to find other specimens of this species, but 

 never succeeded. The bird must be very rare in Newfoundland, at 

 least in the regions visited. 



59. Hylocichla ustulata swainsoni (Tschudi). 

 Olive-backed Thrush. 



Thirty specimens of both sexes from Deer Lake, Nicholsville, and 

 Hobley Hills, June 27th and throughout the month of July. 



The Olive-backed Thrush is by far the commonest thrush in New- 

 foundland. It apparently prefers the drier woods, especially those in 

 which clearings have been made. 



60. Hylocichla guttata pallasi (Cabanis). 

 Hermit Thrush. 



Fifteen specimens of both sexes from Nicholsville and Spruce Brook. 



Newfoundland birds of this species average slightly darker and 

 grayer than breeding birds from New England. The markings of 

 the breast are slightly blacker. But since certain specimens from 

 New England approach in coloration very closely to Newfoundland 

 birds, it seems advisable to consider these differences as tendencies 

 rather than characters distinctive of a geographic race. 



The Hermit Thrush is often found in company with the Olive- 

 backed, but it seems to prefer the water more than the latter species. 

 Just at dusk, many Hermit Thrushes were always to be found along 



