aaa Thirteenth Supplement to the A. O. U. Check-List. 415 
Groce, Dist. — Southwestern United States and northwestern 
Mexico, from California and Lower California to Utah, Arizona, 
and extreme southwestern New Mexico. 
530). Astragalinus psaltria mexicanus (Swainson). This 
is found to be equivalent to 4. psaltria (cf. OBERHOLSER, 
Proc. Biol. Soc. Wash., XVI, 1903, 115), and should be 
expunged from the Check-List. 
5446, Passerculus rostratus halophilus (McGrecor). 
This is to be eliminated from the Check-List as equivalent 
to P. rostratus guttatus, in summer plumage. (Cf. BREWSTER, 
Bull. Mus. Comp. Zool., XLI, 1902, 139.) 
591d. Pipilo fuscus carole McGrecor. This alleged form 
is to be eliminated, as indistinguishable from 7. fuscus crissalis 
(cf. editorial note, Condor, rgo1, 108; and McGrecor, Pac. 
Coast Avifauna, No. 2, rgor, 15). 
612a. Petrochelidon lunifrons tachina OBerHoIser. 
Lesser Cliff Swallow. 
Petrochelidon lunifrons tachina OBERHOLSER, Proc. Biol. Soc. 
Wash., XVI, Feb. 21, 1903, 15. 
Geoc. Dist.— Southwestern Texas, south into eastern Mexico 
to Vera Cruz. 
612.2. Petrochelidon melanogastra (Swainson). Found to 
be only subspecifically distinct from P. /unifrons, hence: 
612+. Petrochelidon lunifrons melanogastra (Swainson). 
(Cf Ripeway, Bull. U. S. Nat. Mus., No. 50, pt. III, 51, in 
press. ) 
SusprAMILy PTILIOGONATIN ZA. This becomes 
Famity PTILIOGONATIDA. Sivky Fiycarcuers. (C 
Ripeway, Bull. U. S. Nat. Mus., No. 50, pt. I, 1901, 21.) 
