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S20 



REVIEW OF AMERICAN BIRDS. 



[part I. 



The following references to American Swallows I have not suc- 

 ceeded in identifying : — 



Hirundo unalaBchkensis, Omelim, Syst. Nat. 1, 1788, 1025. " Nigra ; subtog 

 oinerea ; nropygio exalbido, rectricibua luarginibus rotundatis. Long. 

 4^ uno. Hub. Unalaschka." 



Hirundo andecola, D'Obb. et Lafr. Mag. de Zool. 1837. "AfBnis prece- 

 dunti (//. putagonica) magnitudine et forma rostri sed differt alis lougi- 

 oribus, Cauda fere recta et ooloribus. Supra nigra, colore viridi-niteiij, 

 alis caudaqne vix eiuarginata iiigro-fuscis, rectricibus lat '..libus tres 

 lineas tantummodo iuterniediis Imigioribus. Subtus guttnre colloqne 

 plumbeis, pectore hypochondriinque cinerascentibus, abdomine medio 

 anoque sordide albisoentibus, tectricibus caudse inferis griaeo maculatia. 

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

 This species appears related to Atticora murina or cinerea, bat does not seem 



exactly the same. 



Hirundo maculosa, Kdbij (based on Bdffon, PI. enl. 546, 1). Above 

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

 riorly, more separated towards the tail. Hub. Cayenne. 



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