ai4 Tenth Supplement to the A. O. U. Check-List. Jay 
Thryomanes bewickit drymacus OBERHOLSER, Proc. U. S. 
Nat. Mus. XXI, 1898, 437. 
Not separable from Zhryomanes b. spilurus. 
Thryomanes bewickii nesophilus OBERHOLSER, Proc. U. S. 
Nat. Mus. XXI, 1898, 442. 
Not separable from 7zryomanes b. spilurus. 
Thryothorus cerroensis ANTHONY, Auk, XIV, April, 1897,. 
166, 
Not separable from Z%ryomanes leucophrys. 
Parus gambeli thayert BirTwEtiL, Auk, XVIII, April, rgo1, 
166. 
Based on specimens of Parus gambeli stained by contact with 
tree trunks blackened by fire. 
Parus rufescens barlowi GRINNELL, Condor, II, tgoo, 127. 
A synonym of Parus riufescens neglectus, 
flylocichla fuscescens fuliginosa Howr, Auk, XVII, July, 
1900, 270. 
Considered as a synonym of 4/7. f. savicicola. 
IV. DEFERRED FOR FURTHER INVESTIGATION. 
The names printed in heavy-faced type are already in the 
Check-List. 
Many of the following cases were deferred on account of lack 
of material for their proper consideration; others involve ques- 
tions of nomenclature as well as ornithology that require careful 
consideration. 
Cyclorrhynchus vs. Phaleris (cf. Grant, Cat. Bds. Br. 
Mus. XXVI, 1898, 607. 
5la. Larus argentatus smithsonianus vs Z. argentatus (cf. 
KwnicGHT, Auk, XVII, 1900, 63; Dwicut, zdéd. XVIII,. 
1901, 58-61). 
