HYLOCTCHLA. 125 



Kylocichla ustulata (Nutt.). 



Turdus swainsonii, var. ustulatus, Baird, Brewer fy Ridgw. N. Amer. Birds, 

 i. p. 16 (1874). 



Turdus ustulatus, Salv. # Godm. Biol. Centr.-Amer., Aves, i. p. 10 (1879) ; 

 Seebohm, Cat. Birds B. M. v. p. 203 (1881) ; Sharps in Seebohm, 

 Mon. Turdidce, i. p. 176 (1898) ; Nehrk. Kat. Eiersamml. p. 36 (1899). 



Hylocichla ustulata, Sharps, Hand-l. iv. p. 142 (1903). 



Eggs of the Russet-backed Thrush are similar to those of H. swain- 

 soni, described below. They measure 0-81 to 0-88 by 0-65 to 0-68. 



1. California (R. Ridaiuay : Tristram Crowley Bequest. 



Coll.). 

 6. Los Angeles, California, 10th June. W. Radcliffe Saunders, Esq. 



[P.]. 



Hylocichla swainsoni (Cab.) 



Turdus swainsonii, Ross, Nat. Hist. Rev. 1862, p. 279 ; id. Canad. Nat. 



vii. p. 144 (1862) ; Baird, Breiver $ Ridgw. N. Amer. Birds, i. p. 14 



(1874) ; Salv. fy Godm. Biol. Centr.-Amer , Aves, i. p. 10 (1879) ; 



Seebohm, Cat. Birds B. M. v. p. 201 (1881) ; Dresser, Birds Eur. 



ix. (Suppl.) p. 1 (1895) ; Sharpe in Seebohm's Mon. Turdidce, i. p. 179 



(1898) ; Nehrk. Kat. Eiersamml. p. 36 (1899). 



Turdus pallasii, apud Lord, Proc. R. A. Inst. Woolwich, iv. p. 338 (1865). 

 Turdus (Hylocichla) swainsoni, Corns, Birds Color. Valley, p. 34 (1878). 

 Turdus ustulatus swainsonii, Nelson, Report Nat. Hist. Alaska, p. 218 



(1887). 

 Hylocichla swainsoni, Sharpe, Hand-l. iv. p. 142 (1903). 



The eggs of the Olive-backed Thrush are of a rather pointed 

 oval shape and slightly glossy. They are greenish blue, speckled 

 and mottled with russet, pinkish brown, and underlying lavender or 

 lilac. The markings are generally evenly disposed over the surface 

 of the shell, but occasionally they form an indistinct cap at the broad 

 end. Specimens measure from '8 to -95 in length, and from -61 to 

 7 in breadth. 



4. Porcupine River, Alaska, 10th June Salvin-Godman Coll. 



(R. Kennicott: Smiths. Inst.}. 



4. British Columbia (J. K. Lord). N. Amer. Bound. Comm. 



4. British Columbia. Crowley Bequest. 



8. Mackenzie River District. B. R. Ross, Esq. [P.]. 



3. Little Slave Lake (8. Jones : Salvin-Godman Coll. 



Henshaw Coll.). 



3. Great Slave Lake (J. Lockhart : Crowley Bequest. 



Smiths. Inst.}. 



3. Michigan, 30th May. W. Radcliffe Saunders, Esq. 



[P.]. 



3. California, May. W. Radcliffe Saunders, Esq. 



[P.]. 



Hylocichla pallasi (Cab.) 



Turdus pallasi, Baird, Brewer Sf Ridgw. N. Amer. Birds, i. p. 18 (1874) ; 



Seebohm, Cat. Birds B. M. v. p. 199 (1881) ; Dresser, Birds Eur. 



ix. (Suppl.) p. 5 (1895) ; Sharpe in Seebohm's Mon. Turdida, i. p. 185 



(1898) ; Nehrk. Kat. Eiersamml. p. 35 (1899). 

 Hylocichla pallasi, Sharpe, Hand-l. iv. p. 143 (1903). 



