iS8S.] Scott ou the Birch of Arizona. l6^ 



will scarcely permit the old birds to enter. The eggs are from four to six 

 in number, and three broods are generally reared each season. 



226. Thryothorus bewickii murinus. Baird's Wrex. — This species 

 was obtained in the Catalinas and also in the Pinal Mountains, at both of 

 which localities it appears to be resident, ranging up to about six thousand 

 feet, and apparently preferring the evergreen oak region. 



The onlj' nests that I have found have been built in natural hollows or 

 deserted Woodpeckers holes in live oak trees. 



I noticed the species on the San Pedi-o River in winter, and Mr. Brown 

 has found it not uncommon about Tucson during the colder portion of the 

 year. 



[Fifteen specimens from Arizona represent the extreme grayish form of 

 this subspecies, differing as much in the general color of the upper parts 

 from a similar series from Southern Texas in Mr. Sennett's collection as 

 do the Arizona Mockingbirds from the Mockingbirds of the Atlantic States. 

 -J. A. A.] 



227. Troglodytes aedon parkmanii ? Parkisian's Wren. — It is appar- 

 ent that two forms of House Wren occur in this region. That which I 

 take to be the true parkmanii is migratory and not nearly as common 

 as the form that I described in this journal (Vol. II, p. 351), under the 

 name of T. aedon mariance. The only example of the form known as the 

 parkmanii I?, catalogued as No. 1075, $, 8th October, 1S85, ^"d was taken 

 near my house in the Catalinas, and several specimens of House Wren 

 taken by Mr. Herbert Brown near Tucson in the fall and winter months. 



228. Troglodytes aedon marianae .^ Marian's Wren. — The other 

 House Wrens that were obtained I must again refer to a form undescribed 

 until published in this journal, as above. 



They were all obtained in the Catalinas. and with a few exceptions in 

 the pine forest region, where they were breeding and ([uite abundant in 

 April, 18S5. The birds are migrants and summer residents in the jjine 

 forests of the Santa Catalinas above 10,000 feet. 



*[In Mr. Scott's series of thirteen specimensare two only in fall plumage. 

 namely, No. 773, J, Catalina Mill, Sept. i, 18S4, and No. 1075, J, same 

 locality, Oct. 8, 1884. These look quite different from the others, which 

 were taken in April (Apr. 19-24, 1885), in the "pine region" of the Santa 

 Catalina Mountains, at the beginning of the breeding season. In the light 

 of much material additional to that examined when I penned my note en- 

 dorsing Mr. Scott's T. aedon mariana; (Auk, Vol. II, p. 351, footnote), I 

 am now compelled to consider the differences noticed by Mr. Scott as 

 inainly seasonal, and the entire series of specimens as referable to the 

 form which has for many years been called '/rtr>^wff«/V.' The mariance 

 series, however, is pretty uniformly and appreciably lighter in color than 

 the average of specimens from the middle region of the continent, repre- 

 senting apparenth' the extreme degree of pallor of the pale interior race. 



Finding it desirable to again review the subject in the present connec- 

 tion, I have been at the trouble to bring together a large amount of mate- 

 rial (about 120 specimens), Mr. Ridgwaj^ having kindly sent me for 



