HYLOCTCHLA. 125 



Hylociclila ustulata (Nutt.). 



Turdiis swainsonii, var. ustulatus, Baird, Brewer 8^ Ridgw. N. Amer. Birds, 

 i. p. 16 (1874). 



Turdus ustulatus, Salu. <^- Godm. Biol. Centr.-Amer., Aves, i. p. 10 (1879) ; 

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

 Man. Turdidee, i. p. 176 (1898) ; Nehrk. Kat. Eiermmml. p. 36 (1899). 



Hylociclila ustulata, Sharpe, Hand-l. iv. p. 142 (1903). 



Eggs of the Russet.-backed Thrush are similar to those of IT. swm'n- 

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



1. Cali^ovma. (B. Ridffivay : Tristram Crowley Bequest. 



Coll.). 

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



[P.]. 



Hylocichla swainsoni (Cab.) 



Turdus swainsouii, Ross, Nat. Hid. Rev. 1862, p. 279 ; id. Canad. Kat. 



vii. p. 144 (1862) ; Baird, Breiver Sj- Ridyiu. N. Amer. Birds, i. p. 14 



(1874); Salv. 8; Godm. Biol. Centr.-Amer , Aves, i. p. 10(1879); 



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



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



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

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

 Turdus (Hylocichla) swainsoni, Coues, Birds Cohr. 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 slightl)' glossj'. 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 CoU. 



{R. Kennicott: Smiths. Inst.). 



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



4. British Columbia. Crowley Bequest. 



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



3. Little Slave Lake {S. 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. Radcliife Saunders, Esq. 



[P.]. 



Hylocichla pallasi {Cah.) 



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



Seelwhm, Cat. Birds IL M. v. p. 199 (18S1); Dresser, Birds Eur. 



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



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

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



