436 PROCEEDINGS OF THE NATIONAL MUSEUM. 



mixed with darker; lower parts dull white, faintly mottled with brown- 

 ish gray ou breast; sides and fiaiiUs smoke gray; crissum tinged with 

 ochraceous and barred witli blackish. 



From eremophilu.s this race ditters in decidedly darker tianks and 

 upper surface, ratlier broader superciliary stripe, more regularly and 

 heavily barred crissum, as well as much shorter wing and tail. From 

 murinus, which it approximates very closely in color above, it differs in 

 conspicuously shorter wing and tail, shorter culmen, darker flanks, and 

 somewhat less heavily barred lower tail coverts. 



Two examples from San (^uentin Bay, Lower California, are essen- 

 tially similar to the type of ckarienturus, although one is darker, this 

 difference being probably due, however, to adventitious stain, as the 

 under surface is very mii(;h soiled. Another s])eciineii from the same 

 locality is much paler above, with a bright reddish back that is evi- 

 dently abnormal. Breeding specimens from Pasadena, California, 

 resemble the type, but are slightly warmer brown above, showing in 

 this respect an inclination toward dri/macus. 



Fall and winter birds are, as would be expected, darker and richer 

 brown. A fine series from Pasadena shows some individual variation 

 in the shade of tlie ui)per surfice, Ijut onl}^ one exani])le can be con- 

 sidered in noticeable degree intermediate between cliaricntKrus and 

 drymcecus. 



The few young birds examined do not seem to be with certainty dis- 

 tinguishable from the young of eremophUus ; they are rather darker 

 than leucophrnH and much less rufescent than dryma'cus. 



Thirteen si)ecimens from Santa Catalina Island, California, taken in 

 winter and spring, are not perfectly typical, though very much nearer 

 the present form than to any of the others. In color these island birds 

 are apparently a little darker and less rufescent; the bill and middle 

 toe are slightly longer. These differences are, however, too slight and 

 too inconstant to warrant even snbspecilic se])aration from the bird of 

 the mainland. 



Mr. Bryant has recorded ''«p*fwrw.s'" from the mainland of Lower 

 California at the latitude of Cerros Island, ' but this, of (M)urse, refers 

 to the present race, representing, apparently, the southern limit of its 

 distribution. 



Fifty specimens examined, from the following localities, breeding 

 stations being designated by an asterisk: 



California: Pasadena;* Chilco (mountains 20 miles north of Pasa- 

 dena);* San Bernardino; Laguna, San Diego County;* Santa Catalina 

 Island. 



Lower California: Nashoguero Valley, Mexican boundary line; San 

 (^uentin P)ay. 



> Proc. Calif. Acad. Sci., 1889, 2d ser., II, p. 316. 



