4. Petrochelidon tiialassina, (Sw.) Aud. B. of Am. pi. 385, 



fig. 4, 6. 

 Hirundo thalassina, Sicains. Philos. Mag. 1827, p. 366. 

 " Hirundo viridis ? Licht." Bonap. Consp. Av. p. 341. 

 *'Hirundo sericea.'' Label on specimens from 3Iessrs. Verreaux, oj 



Paris. 



1. Adult male, Oregon, from Dr. Townsend's collection. 



2. Adult female, Oregon, from the same. 



3. Adult male, California, from Dr. Gambel's collection. 



4. Adult, Mexico, from the Rivoli collection. 

 5, 6. Adults, Mexico. 



5. Petrociieltdon albiventer, (Bodd.) Bvff. PL EnL 546, fig. 2. 



Hirundo albiventer, Bodd. Tab. PI. Enl. p. 32. 

 Hirundo leucoptera, Gm. Syst. Nat. i. p. 1022. 



1. Adult, Surinam. Presented by C. Hering, M. D. 



2. Adult, Cayenne, from the Rivoli collection. 



3. Adult, Brazil, from the same. 



4. Adult, Bolivia, from the same. 



6. Petrochelidon leucorrhoa, (Vieill.) 



Hirundo leucorrhoa, Vieill. Nouv. Diet, xiv. p. 519. 

 Hirundo frontnlis, Gould. Yoy, Beagle^ Birds, p. 40. 

 Hirundo Goujdii, Cassin. Proceed. Acad. Phil., v. p. 69. 

 " Hirundo leucopyga, Licht. Mus. Berol." Cahanis. Cat. Heine a 

 Coll. p. 48. 



1, 2. Adults, South America, from the Rivoli Collection. 



7. Petrochelidon Meyeni, Cahanis. Cat. Heine's Coll. p. 48. Nova 



Acta Leop. xvi. Sup. pi. 10, fig. 2. 

 " Hirundo leucopyga, Licht. '^ Meyen, Nova Acta, ut sup. 



1. Adult, Chili, from Dr. Townsend's collection. 



2. Young, South America, from the Rivoli collection. 



8. Petrochelidon tahitica, (Gm.) LatJu Gen. Jlist. pi. 112. 



Hirundo tahitica, Gm. Syst. Nat. i. p. 1016. 

 Hirundo pyrrholaima, Forst. Desc. An. p. 241, (1844.) 

 Hirundo taitensis, Lesson. Voy. Coquille, i. p. 648. 



1. Adult, T;ihiti, from Dr. Townsend's collection. 



2. Adult, Sandwich Islands, from the Rivoli collection. 



9. Petrochelidon nigricans, (Vieill.) Gould, B.ofAust. ii. pi. 14. 



Hirundo nigricans, Vieill. Nouv. Diet. xiv. p. 523. 



" Hirundo pj^rrhonota. Lath. MSS." Vig. and Ilorsf Linn. 



Trans. London, xv. p. 190. 

 Collocaiia arborea. Gould. Birds of Aust. ii. p. In trod. p. 29. 

 " Hirundo pygialis, Temm.'' Bonap. Cons. Av. p. 341. 



1, 2. Adult males, Australia, from Mr. Gould's collection. 

 8. Adult female, Australia, from the same. 



4. Adult male, Van Diemen's Land, from the same. 



5. Adult, Australia, from the Rivoli collection. 



