iqo^ J Grinnell and Daggett, Birds oj Coronados hlatids. "2 C 



Description ok Type (in complete newlj acquired adult annual 

 plumage). — Superciliary stripe conspicuously olive-gray, becoming pure 

 white in the supraloral region ; median crown stripe posteriorly drab- 

 . gray, becoming white next to the culmen ; lateral crown stripes burnt 

 umber ; the whole top of head between the superciliary stripes narrowly 

 streaked with black; postocular stripe burnt umber streaked with black; 

 rictal streak black mixed with burnt umber ; suborbital and loral regions 

 whitish flecked with black ; auriculars drab-gray ; malar stripe white 

 faintly tinged with creatn-buft posteriorly ; submalar streak black mixed 

 posteriorly with burnt umber ; chin and throat pure white, with a few 

 sooty feather-tips ; sides of neck drab-gray and hind neck dvah, both 

 obscurely dusky streaked; ground color of back and rump broccoli brown ; 

 rump immaculate, but back and upper tail-coverts narrowly streaked with 

 black ; to be more explicit, an interscapular feather has a black shaft- 

 streak margined narrowly with hazel, the rest of the exposed feather 

 externally being drab; breast and sides streaked with black, each exposed 

 feather bearing a cuneate shaft-streak margined on either side very 

 narrowly with hazel ; belly and anal region pure white ; flanks and 

 crissum pale clay color streaked with sooty brown ; tail sooty brown 

 externally edged with pale mars brown ; wing-coverts and quills centrally 

 sooty brown edged with pale mars brown, the coverts and secondaries 

 tipped with pale drab. 



Measurements of Type. — Wing, 2.50; tail, 2.90; tarsus, .77; hind toe 

 and claw, .54 ; middle toe and claw, .80 ; bill from nostril, .34 ; culmen, .43 ; 

 depth of bill at base, .24. 



Relationship. — A comparison of this with other members of the adap- 

 tive Melospiza cinerea group shows it to be nearest the two California 

 insular forms, clementcB and £-rami>iea. The coloration seems to be much 

 alike in the three cases ; at present nothing can be safely stated on this 

 point, for all the material at hand from the Santa Barbara Islands is in worn 

 summer plumage (March to June). In general size coro7iatorum is nearer 

 clementcE than graminea though with smaller bill and feet than either. It 

 is quite significant that the Coronodos Islands form should thus present 

 characters much more like those of the form on San Clemente Island, 

 seventy miles to the northwestward, than like those of the mainland race 

 twelve miles at most to the eastward. Coronatoruin differs fiom M. c. 

 cooperi of the adjacent mainland in smaller bill, paler coloration and 

 much narrower streaking. The differences from the other California 

 races are still more conspicuous, so that further comparison may not be 

 drawn. The following measurements indicate the difference in propor- 

 tions between the three insular races. It must be kept in mind that the 

 specimens of clementcB and graminea are in worn plumage, so that more 

 or less wearage (say 3%) should be added to the wing and tail lengths 

 given. Most of the coroiiatorum skins are in complete new fall plumage. 

 The dimensions are given in inches, instead of millimeters, because most 

 of the published measurements of California Song Sparrows have been in 

 inches. 



