'I 7 A. Eleventh Supplement to A. O. U. Check-List. \ 



Auk 

 July 



Sphyrapkus varius daggctti Grinnell, Condor, III, Jan. 

 1901, 1 2. 



Suckow, in 1800, gave a new name {/lotke/isis) to the northern 

 form, which restricts the name ruber to the southern form named 

 S. V. daggctti by Mr. Grinnell. 



Alia. Antrostomus vociferus macromystax vs. A. macro- 

 mystax {cf. Riley, Osprey, V, 1901, 101). 



No change considered necessary until further evidence of the 

 distinctness of the two forms becomes available. 



460. Contopus pertinax pallidiventris vs. Horizopus inusi- 

 CHS {cf. Sharpe, Hand-List, III, 1901, 141). 



Tyrannula mnsica Swains, (in place of pertinax) is not con- 

 sidered as satisfactorily identifiable. 



466, Ziinpidonax traillii vs. E. pusillus {cf. Sharpe, Hand- 

 List, III, 1901, 138). 



469. Empidonax •wrightii vs. E. obscums {cf. Sharpe, /. c). 



As there is no new evidence presented, the Committee sees no 

 reason for reversing its previous carefully considered ruling on 

 these two cases. 



523. Leucosticte griseonucha vs. Z. tephrocotis griseo nucha 

 {cf. Grinnell, Condor, III, 1901, 20; Ridgway, Eds. N. 

 and Mid. Am. I. 1901, 72). 



Evidence of intergradation does not appear to be sufficiently 

 strong to warrant the Committee in reversing, at present, its deci- 

 sion in relation to the status of these forms. 



Peucaea vs. Aimophila {cf. Ridgway, Bds. N. and Mid. 

 Am. I. 1901, 230.). 



Although there is admittedly no distinct line of demarkation 

 between the two groups, as they are commonly recognized, there 



