Vol. XXI 



1904 



1 Thirteenth Sufplemcnt to the A. O. U. Check-List. 4I S 



Geog. Dist. — Southwestern United States and northwestern 

 Mexico, from California and Lower California to Utah, Arizona, 

 and extreme southwestern New Mexico. 



530J. Astragalinus psaltria mexicanus (Swainson). This 

 is found to be equivalent to A. psaltria {cf. Oberholser, 

 Proc. Biol. Soc. Wash., XVI, 1903, 115), and should be 

 expunged from the Check-List. 



6446. Passerculus rostratus halophilus (McGregor). 

 This is to be eliminated from the Check-List as equivalent 

 to F. rostratus guttatus^ in summer plumage. {Cf. Brewster, 

 Bull. Mus. Comp. Zool., XLI, 1902, 139.) 



591c?. Pipilo fuscus carolae McGregor. This alleged form 

 is to be eliminated, as indistinguishable from P. fuscus crissalis 

 {cf. editorial note, Condor, 1901, 108; and McGregor, Pac. 

 Coast Avifauna, No. 2, 1901, 15). 



612a. Petrochelidon lunifrons tachina Oberholser. 



Lesser Cliff S-wallow. 



Petrochelidon lunifrons tachina Oberholser, Proc. Biol. Soc. 

 Wash., XVI, Feb. 21, 1903, 15. 



Geog. Dist. — Southwestern Texas, south into eastern Mexico 

 to Vera Cruz. 



612.2. Petrochelidon melanogastra (Swainson). Found to 

 be only subspecifically distinct from P. lunifrons, hence : 



6126. Petrochelidon lunifrons melanogastra (Swainson). 

 {Cf Ridgway, Bull. U. S. Nat. Mus., No. 50, pt. Ill, 51, in 

 press.) 



Subfamily PTILIOG-ONATINiE. This becomes 



Family PTILIOGONATID-ffJ. Silky Flycatchers. {Cf 

 Ridgway, Bull. U. S. Nat. Mus., No. 50, pt. I, 1901, 21.) 



