Mr. Seebohm remarks (Cat. B. Brit. Mus. v. p. 201) that, " according to the rules of the 

 British Association, the name given by Gmelin {Turdus fuscus) to this species should be adopted 

 instead of that given by Cabanis more than half a century later ;" but I do not take that view, as 

 Gmelin states that his Turdus fuscus is of the size of Turdus iliacus (iliaci magnitudine), which 

 cannot possibly apply to Turdus sivainsoni. 



American ornithologists recognize three forms of Swainson's Thrush, viz.: — 1. Turdus 

 swainsoni, 2. Turdus swainsoni, var. ustulatus, to which I refer above, and 3. Turdus alicice, 

 which last is stated to inhabit Eastern North America to the shores of the Arctic Ocean, and 

 along the northern coast from Labrador to Kodiak, breeding in immense numbers between the 

 mouths of the Mackenzie and Coppermine Bivers ; west to Fort Yukon and the Missouri Biver 

 States ; and wintering south to Costa Bica. It has also occurred in Siberia, in the north of 

 Jakutsk, and in the Tschuktschi Feninsula, but has not been obtained in the Western Falsearctic 

 Begion. 



According to Messrs. Baird, Brewer, and Bidgway (N.-Am. Birds, i. p. 11) Turdus alicice 

 differs from Turdus sivainsoni " in its large size, longer bill, feet, and wings especially. The 

 back is of a greener olive. The breast and sides of the head are entirely destitute of the buff 

 tinge, or at best this is very faintly indicated on the upper part of the breast. The most 

 characteristic features are seen on the side of the head. Here and there is no indication 

 whatever of the light line from nostril to eye, and scarcely any of a light ring round the eye, — 

 the whole region being greyish olive, relieved slightly by whitish shaft-streaks on the ear-coverts. 

 The sides of the body, axillars, and tibiae are olivaceous grey, without any of the fulvous tinge 

 seen in T. sivainsoni." 



The specimens figured and described are in my own collection. 



In the preparation of the above article I have examined, besides the series in the Salvin and 

 Godman collection, and in the British Museum, the following specimens : — 



JE Mus. If. E. Dresser. 



a, b, <$ , c, d, $ . Beach, Hamilton, Canada, May 1890 (R. C. M Ilwraith). e, J. Chillanhack, B. C, May 

 25th, 1888 (A. C. Brooke), f. Pennsylvania (J. Krider). g, 6 . Washington, D. C, May 13th, 1891 

 (C. W. Richmond). 



