200 TXJEDII)^. 



The synon3-mj- of the TTestcm form is as follows : — 



11. Turdus aonalaschkae. 



Aoonalashka Thrush, Lath. Gen. Syn. ii. p. 23 (1783). 



Turdus aonalaschkae, Gmel. Syst. Nat. i. p. 808 (1788); Lath. Ind. 



Orn. i. p. 329 (1790); Vieill. N. Diet. d'Hist. Nat. xx. p. 274 



(1818). 

 Muscicapa guttata. Pall. Zoogr. Rosso-Asiat. i. p. 465 (1811). 

 Turdus nanus, Anduh., apud Baird, Cass, i^ Laivr. B. N. Atner. p. 213 



(1858); ajmd Sclafer, F. Z. S. 1859, p. 325; apud Sclater, Cat. Am. 



B. p. 2 (1862) ; apud Baird, Revieio, p. 15 (1864) ; apud Dull Sf 



Bonn. Tr. Chic. Acad. i. p. 275 (1869) ; apud Gray, Hand-l. B. i. 



p. 254. no. 3680 (1869) ; ajmd Cooper, B. Calif., ed. Baird, p. 4 



(1870). 

 Hylocichla nana (Aud.), apud Cones, Ibis, 1865, p. 163. 

 Turdus (Hylocichla) nanus {Aud.), apud Coues, Pr. Phil. Acad, xviii. 



p. 65 (I860). 

 Turdus pallasii, Cab., var. nanus, Aud., apud Coues, Key N. Amer. B. 



p. 72 (1872) ; apud Baird, Brewer, l^- Ridgw. Hist. N. Amer. B. 



p. 20 (1874). 

 Turdus paUasi, Cab., b. nanus, Aud., apud Coues, B. N. West, p. 3 



(1874). 

 Turdus (Ilrlocichla) paUasi, Cab., b. nanus, Aud., ajmd Coues, Birds 



Colorado'Vall. p. 21 (1878). 



This form is said to resemble T. auduhoni in colour. It appears 

 to be always smaller than that species, and is, on an average, smaller 

 than T. pnllasi. Length of wing 3-67 to 3'25 inches, tail 3-0 to 2-4, 

 culmen 0'66 to 0'6, tarsus 1*16 to 1-04. 



The Western form of the Hermit Thrush breeds in South Alaska, 

 and winters in California as far south as Cape St. Lucas, extending 

 eastwards ijato the Rockj'-Mountains range. Its southern breeding- 

 limit and the extent of its northern winter range have not j'et been 

 accurately determined. 



a. Ad. sk. 49th Parallel (Daivson). Boundary Commission. 



b. Ad. sk. La Parada, Mexico. A. Boucard, Esq. [C.]. 



c. Ad. sk. California, Oct. 1851 {Dr. H. Seebohm, Esq. [P.]. 



Heermari). 



d. Ad. sk. California, Nov. 1850 {Dr. H. Seebohm, Esq. [P.]. 



Heermati). 



Turdus swainsoni, Turdus aliciae, and Turdus ustulatus. 



Ornithologists differ in opinion as to the value of these three 

 forms, which appear to me to be deserving only of subspecific rank, 

 some examples being intermediate. The synonj'my of the Eastern 

 form is as follows : — 



