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 64 THE CONDOR Vol. XIV some of these specilnens collected by C. A. Allen now in the collections of Wil- liam Brewster, Outram Bangs, Jonathan Dwight, Jr., and perhaps others. Never having seen true megarhynclm, the very large bills of the Marin County individuals allayed all suspicion on our part as to their being anything else, or as to the name not being absolutely appropriate; and so sure had we been that these were of this form that they were not included in the lot taken over to Berkeley for comparison with the Passerella series in the museum there. Fig. 20. SPECIMENS OF STEPHENS AND THICK-BILLED SPARROW'S: NO. 1, Paserella stephensi FROM THE SAN BERNARDINO MOUNTAINS; NO. 2, . slephensi FROM THE SOUTHERN SIERRA NEVADA; NO. 3, IP. slephetsi FROM MARIN COUNTY; NO. 4, . i. lleffy FROM PLACER COUNT PO,O v jos. Our specimens from the Sierra Nevadas and foothills we had called schistacea; but on account of the subspecific differences being so entirely rela- tive one must have a starting int for comparison, as bald descriptions often fail to convey the proper ideas. On making comparison with the University of California series we found that while some of our Sierra specimens taken in the fall or winter were actually schistacea, the breeding birds were megarhyncha.