14: TUEDID^. 



The usual winter quarters of the true T. pallasi do not apparently extend beyond 

 Florida, as there are no authentic records of its presence in the West-Indian islands, 

 nor even in the valley of the Eio Grande. Our Guatemalan specimen therefore should, 

 we think, be looked upon as a straggler which has flown far beyond the ordinary limits 

 of the winter quarters of the species. A very full account of T. pallasi and its allied 

 races is given in Dr. Coues's recently published ' Birds of the Colorado Valley ' 5. 



7. Turdus auduboni. 



Merula silens, Sw. Phil. Mag. new ser. i. p. 369 ' (nee Vieill.) . 



Turdus siiens, Sol. P. Z. S. 1858, p. 300'. 



Turdus solitarius, Sol. P.Z. S. 1857, p. 312'. 



Turdus auduboni, Baird, Eev. Am. B. p. 16*; Sumichrast, Mem. Best. See. N. H. i. p. 542'; 



Henshaw, Bull. Nutt. Orn. Club, iv. p. 134 '. 

 Turdus pallasi, var. auduboni, Baird, Brew. & Kidgw. N. Am. B. i. p. 21''. 

 Turdus {Hylodchla) pallasi, c. auduboni, Cones, B. Col. Vail. i. p. 21 \ 



Similis T. pallasi, sed colore corporis supra cinerascentiore et minus cinuamomeo, cauda brunnescentiore ; 

 statura quoque crassitiore distinguendus. Long, tota 7'0, alse 4-0, caudse 3'1, rostri a rictu -8, tarsi 1-2. 

 (Descr. fern, ex Oaxaca, Mexico. Mus. nostr.) 







Eab. N. Amebica, Southern Rocky-Mountain region ^ ^ ^. — Mexico, Temascaltepec 

 {Bulloch 1), La Parada {Boucard ^), Orizaba {Botteri ^, Swmichrast ^) ; Guatemala, 

 Pine-forest of Volcan de Fuego, alt. 10,000 to 12,000 ft. (6>. 8.). 



In his paper on Bullock's collection of Mexican birds Swainson gave tlie characters of 

 this Thrush ^, but unfortunately chose for it the name of Turdus diem, one that had 

 previously been employed by Vieillot. He also erroneously referred to pi. 4-3. fig. 2 

 of Wilson's ' American Ornithology ' (vol. v.) as representing his bird, this figure, in fact, 

 being a portrait of T. swainsoni. Swainson's name, however, remained in common use 

 until 1864, when Prof. Baird showed the impropriety of its retention, and substituted 

 that of T. auduboni, basing his name upon a specimen from Fort Bridger ^. 



The relationship subsisting between the three forms of Bed-tailed Thrushes T. pallasi, 

 T. auduboni, and T. nanus had long been a matter of discussion amongst ornithologists 

 of the United States ; and the matter still seems to be sub judice. In Dr. Coues's 

 ' Birds of the Colorado Valley,' and in Baird, Brewer, and Ridgway's ' North American 

 Birds,' the small western form T. nanus and the large Colorado and Mexican form 

 T. auduboni are treated as imperfectly segregated races of the eastern T. pallasi ; but 

 Mr. W. H. Henshaw, in a recent paper ^, seems inclined to the view that segregation has 

 proceeded far enough to admit of each race being recognized with certainty. As our 

 American brethren, with far more ample materials from which to form a judgment, seem 

 to be not yet of accord on this subject, it would be presumptuous of us to pronounce a 

 decided opinion ; but as T. nanus seems to be absent from our limits, and as the true 

 T. pallasi has only occurred once within them, T. auduboni is left practically the sole 



