390 CHECK-LIST OF NORTH AMERICAN BIRDS. 



Petrochelidon lunifrons himfrons (Say), 1823, becomes P. alhtfrons albifrons 

 (Rafinesqtje), 1822. 

 The specific name albifrons has priority. It follows that the two other 

 races of lunifrons also become races of albifrons. (Cf. Rhoads, Auk, 

 XXIV, 1912, 192.) (p. 218) 



Aphdocoma cyanea (Vieillot), 1817, becomes A. caerulescens (Bosc), 1795. 

 On grounds of priority. (Cf. Hellmayr, Alauda, II, No. 2, April 20, 1930.) 

 (p. 223) 



Psaltriparus melanotis lloydi Sennett, 1888, becomes P. minimus lloydi. 



The two former species melanotis and minimus are now considered to be 

 only subspecifically different so that all our Bush-tits become subspecies 

 of the latter, (p. 236) 



Thryomanes beivicki bairdi (Salvin and Godman), 1880, becomes T. b. crcmo- 

 philus Oberholser, 1898. 

 The former name is now restricted to the bird of southern Mexico and the 

 northern form is known as eremophilus, the earliest available name. (Cf. 

 Oberholser, Proc. U. S. Nat. Mus., XXI, 1898, 427.) (p. 244) 



Telmatodytes palustris iliacus Ridgway, 1903, becomes T. p. dissacptus Bangs, 

 1902. 

 On grounds of priority, as the two names are now considered to apply to 

 the same race. (p. 248) 



Toxostoma crissale crissale Henry, 1858, becomes T. dorsalc dorsale Henry, 

 1858. 

 The latter was the name as originally published and a strict interpretation 

 of the rules forbids the emendation to crissale which was formerly 

 accepted, (p. 254) 



Planesticus Bonaparte, 1854, becomes Turdus Linnaeus, 1758. 



The type of Turdus now proves to be T. vierula Linnaeus and the name 

 must be transferred to the genus formerly known as Planesticus over 

 which name it has long priority. (Cf. Oberholser, Proc. Biol. Soc. Wash., 

 XXXIV, No. 19, June 30, 1921, 105.) (p. 258) 



Turdus "Linnaeus," of the last edition of the Check-List, becomes Arceu- 

 thornis Kaup, 1829. 

 This follows from the preceding action, the latter name being the earhest 

 available for this genus, (p. 255) 



Hylocichla guttata pallasi (Cabanis), 1847, becomes H. g. faxoni Bangs and 

 Penard, 1921. 

 The former name proves to be a synonym of true pallasi for which it 

 was proposed as a substitute, and we adopt the earliest available name 

 for the Eastern Hermit Thrush which is faxoni. (Cf . Bangs and Penard, 

 Auk, XXXVIII, 1921, 433.) (p. 259) 



