MUSEUM OF COMPARATIVE ZOOLOGY. 



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that he had shown the T. Alicia; to he " a very common eastern bird, hav- 

 ing a range of habitat as extensive as, and nearly identical with, that of 

 T. Swainsoni," says, in referring to my earlier remarks on this subject, 

 that they " illustrate very fully the well-known seasonal and other varia- 

 tions to which T. Sicainsoni and T. fuscescens are subject," and adds that 

 I appear to have been " autoptically unacquainted " with T. Alicia: at the 

 time of writing them. In respect to this supposition of Dr. Cones, I will 

 merely add that one of the numerous specimens considered by me to typi- 

 cally represent the supposed T. Alicice has been sent to the Smithsonian 

 Institution, and pronounced by Professor Baird himself to "typically 

 represent the T. Alicice." 



The measurements given below of this species and the two following 

 indicate the average size and the usual range of variation in this respect 

 in these species as represented in the Atlantic States. These measure- 

 ments embrace twenty-four specimens of Tun/us Sicainsoni, nearly fifty of 

 T. Pallasi, and about forty of T. fuscescens, nearly all of which are from 

 New England, and by far the greater part from Eastern Massachusetts. 



The following is the range of variation in the series of twenty-four 

 specimens of T. Sicainsoni: Length, C.C2 to 7.75; alar extent, 10.75 to 

 12.C5 ; wing, 3.47 to 4.30 ; tail, 2.40 to 3.40 (4.00 ?) ; tarsus, 1.02 to 1.27. 

 The average dimensions are as follows: Length, 7.17 ; alar extent, 11.65; 

 wing, 3. 80; tail, 2.88; tarsus, 1.15. 



Measurements of Neiv England Specimens of Turdus Swainsoni. 



