Vol. XXIII 



1906" 111 ] Stone, Ornithological Works of J. J. Audubon. 305 



tical. The twenty-six new names that date from the 'Biography' 

 are listed below. 



III. — The Synopsis! 



This single volume comprises the description, synonymy, and 

 habitat of each species, all arranged in systematic order, with the 

 nomenclature revised and brought up to date. The number of 

 species recognized is the same as in the 'Biography,' with the ex- 

 ception of the eleven "hypothetical species" which are here omitted. 

 Two species are added, i. e., Stanley's Goldfinch and American 

 Ptarmigan, but two others, the European Golden Plover and 

 Common Ptarmigan, are suppressed, so that the total remains the 

 same, 491. Five new specific names date from the 'Synopsis,' and 

 a number of new genera. 



The 'Synopsis' is probably in a large measure the work of 

 Macgillivray who was engaged by Audubon to prepare the scien- 

 tific descriptions, etc., for the 'Biography.' 



IV. — The Octavo Edition of 'Birds of America.' 



This work, in seven volumes, follows exactly the order and 

 nomenclature of the 'Synopsis,' the text being that of the 'Biogra- 

 phy' with little change except in the order of the species and the 

 omission of the episodes. It was published in one hundred 

 parts, each five plates, Philadelphia, 1840-1844. 



There are no new names, and no additional species until the end 

 of Volume VII, where seventeen birds not before treated are figured 

 and described. These were mostly procured on the Missouri 

 River Journey. 



The plates of the Octavo edition were reduced from the Elephant 

 Folio with the aid of the camera lucida by John W. Audubon. 

 The composite plates are broken up so that only one species appears 

 on each plate of the Octavo, and where the same species was fig- 

 ured on two of the original plates the figures have been combined 

 and part of them left out, or one of the plates has been omitted. 



Besides the seventeen additional plates in the last part, seven 



