70 CALIFORNIA ACADEMY OF SCIENCES [Proc. 4th Ser. 



gions exhibit a diversity of appearance that renders it difficult 

 in the extreme to frame a satisfactory characterization of the 

 race, and in places the dividing hnes must be somewhat arbi- 

 trarily drawn. 



Birds from the Sacramento Valley exhibit the best mani- 

 festation of the characters of the subspecies. These characters 

 consist of decidedly reddish dorsal surface (though not so 

 rich a red as in marinensis and spilurus) and short tail, bear- 

 ing a different relation to length of wing than is seen in 

 charienturus and eremophilus. Thus in the last analysis the 

 form drymoecus is seen to be an intergradient between the 

 long-tailed, pale colored, southern and desert races, charientu- 

 rus and eremophilus, and the short-tailed, richly colored, coastal 

 subspecies, marinensis and spilurus. This is so markedly the 

 case that while in the Sacramento Valley drymoecus may be 

 considered a fairly well marked form, just as this center is 

 departed from so is there encountered a variation of charac- 

 ters tending toward whichever of the other subspecies is ap- 

 proached. 



There is at hand one adult from Baird, Shasta County, 

 California, the type locality of T. b. drymoecus. There are 

 also available one from Trinity County and two from Siski- 

 you County, all in the same general region in north central 

 California. As indicated by this small series the birds from 

 this part of the state seem to belong to the subspecies dry- 

 moecus. 



Warner Mountain District. There are one adult and two 

 in Juvenal plumage from the Warner Mountains, in the ex- 

 treme northeastern corner of California. The old bird is de- 

 cidedly gray, as compared with Sacramento Valley specimens, 

 but the two young ones are even more rufescent than are com- 

 parable examples from the latter locality. The dull color of 

 the adult is so noticeable as to suggest the possibility of the 

 existence of a definable local race in this little known portion 

 of the country, but in view of the manner of variation shown 

 by drymoecus in others of the outlying parts of its range, I 

 prefer at present to regard this specimen as another example 

 of the variability of the form. In this connection it may be 

 well to call attention to the possibility that the wren recorded 

 from Camp Harney, southeastern Oregon, by Bendire (1877, 



