12 TUEDID^. 



Tardus swainsoni, var. ustulatus, Baird^ Brew. & Ridgrr. N. Am. B. i. p. 16 ^ 



Turdus swainsoni, c. ustulatus, Coues, B. Col. VaU. i. p. 35 ^ 



Tlirdus minor, Scl. P. Z. S. 1857, p. 312' (?). 



Turdus swainsoni, Lawr. Bull. U. S. Nat. Mus. no. 4, p. 11 ^ (?). 



Supra olivaoeo-brunneus unicolor ; subtus albus, gula, genis et peetore fulvesoenti lavatis ; cervice antieo, 

 pectore et bypochondriis brunneo crebre maculatis ; rostro corneo, mandibulse basi et pedibus pallide 

 oorylinis. Long, tota 7-0, alse 3'7, caudas 2-8, rostri a rictu '8, tarsi 1*2. (Descr. maris ex Voloan de 

 Agua, Guatemala (alt. 3500 ft.). Mus. nostr.) 



Hab. N. Ameeica, Pacific coast from Alaska to California s, — Mexico, Tres Marias 

 Islands (Grai/son^^), Orizaba (Boften'^)l, TehnoRteTpec (Sumichrast^)'i ; Guate- 

 mala, Coban, Duefias, Costa Grande {0. S. & F. B. Q.). 



This western race of T. swainsoni, from which, it differs in the more rufescent tint of 

 its plumage above, seems to winter in Mexico and Guatemala. Grayson found it quite 

 abundant in the month of January in the woods of the Tres Marias Islands off the 

 Mexican coast, where it was more timid and shy than any other bird on the islands. 

 It uttered a low plaintive whistle, and seemed solitary in its habits. Grayson adds that 

 though common on these islands it is never seen on the adjoining mainland*. Birds 

 attributed to T. swainsoni have been recorded from Orizaba '' and Tehuantepec ^ ; but 

 from the line of migration of this race, which barely touches eastern Guatemala, it seems 

 probable that these birds really belonged to the rufous form T. ustulatus. 



In Guatemala we found it very common at Coban in Vera Paz during the winter 

 months, where it frequented the second-growth woods so prevalent in that district. On 

 the Pacific side of Guatemala we did not meet with it until the winter of 1873-74. It 

 was then found to be not uncommon on the slopes of the mountains between Capetillo 

 and San Diego, a heavily wooded tract of country with patches of second-growth woods. 



In thus tracing the winter quarters of T. ustulatus and T. swainsoni as shown by the 

 slight difference in colour between them, we are aware that these differences are of a 

 very slight character, and that it is very likely that the two forms will, at no distant date, 

 have to be considered as belonging to one somewhat variable species. Should this be so, 

 the name this species should bear is T. ustulatus. 



5. Turdus aliciae. 



Turdus alicice, Baird, Birds N. Am. p. 217, t. 81. f. 2'j Rev. Am. B. p. 21^; Lawr. Ann. Lye. N. Y. 



ix. p. 91'; Salv. P. Z. S. 1870, p. 180*; Baird, Brew. & Ridgw. N. Am. B. i. p. 11'; Gundl. 



Orn. Cub. p. 58'. 

 Turdus [Hylocichla] swainsoni, b. alicice, Coues, B. Col. VaU. i. p. 35 '. 



Similis T. swainsoni, sed colore corporis superi grisescentiore, genis griseis et colore guise et pectoris albicanti- 

 oribus distinguendus. Long, tota 7"0, alaa 4-1, caudae 3-0, rostri a rictu -8, tarsi 1-23. (Descr. maris ex 

 Chiriqui. Mus. nostr.) 



Rab. N. America, Eastern States, west to Fort- Yukon and Missouri-river States, shores 



