

320 REVIEW OF Ar.IERICAN BIRDS. [PART I. 



The following references to American Swallows I have not suc- 

 ceeded ill identifying : — 



Hirundo unalaschkensis, Gmelin, Syst. Nat. 1, 1788, 1025. "Nigra; subtus 

 cinerea ; uropjgio exalbiclo, I'ectricibus marginibus rotundatis. Long. 

 4^ unc. Hub. Unalaschka." 



Hirundo andecola, D'Orb. et Lafk. Mag. de Zool. 1837. "Affinis prece- 

 dent! (i7. patagonica) naagnitudine et forma rostri sed difFert alis longi- 

 oribus, Cauda fere recta et coloribus. Supra nigra, colore viridi-nitens, 

 alis caudaque vix emarginata nigro-fuscis, rectricibus lateralibus tres 

 lineas tantummodo iutermediis longioribus. Subtus gutture colloque 

 plumbeis, pectore hypochondriisque cinerascentibus, abdomine medio 

 anoque sordide albiscentibus,tectricihus caudse inferis griseomaculatis. 

 Long. 14 cent. Habit, in Andibus, La Paz, Bolivia." 

 This species appears related to Atticora mnrina or cinerea, but does not seem 



exactly the same. 



Hirundo maculosa, Kuhl (based on BrFFOjr, PI. enl. 546, 1). Above 

 lustreless brown ; beneath white, with oval brown spots, closest ante- 

 riorly, more separated tQwards the tail. Hah, Cayenne. 



