NATURAL SCIENCES OF PHILADELPHIA. 203 



Kgnarius with equal fidelity, but is rather small. In undoubted Chili speci- 

 mens in the Academy Museum, the longitudinal stripes on the under parts 

 are wider than as given by M. Malherbe, and confluent, forming apparently 

 continued bands in the adult bird. 



24. Picus Ledouci, Malherbe. 



Plcus minor var. algeriensis. Label in Academy Museum. 

 Of this species, or variety, there are four specimens in the Academy Mu- 

 seum all labelled "Algeria." Though not in adult plumage, they present 

 some points of difference from P. minor, and I suspect that the species is 

 about as valid as some of the near allies of P. major, medius, and others which 

 are held to be entirely respectable specifically. 



25. Picus borealis, Vieillot. 



The Woodpecker described and figured by Vieillot (Ois. d'Arn. Sept. 11, 

 p. 66, pi. 122,) is, in my opinion, a valid species, and quite as distinct from 

 P. querulus, Wilson, as Picas Harrisii is from P. villosus, and the differences 

 are as easily seen, with specimens of both under examination. In P. borealis 

 the transverse bands on the back and shorter quills are much more numer- 

 ous, especially on the latter, as so are also the spots on the outer webs of the 

 primaries. So far as I can judge from rather badly prepared specimens of P. 

 querulus, it has a wide transverse band of black on the neck behind, which is 

 but narrow in P. borealis. The two species are very nearly the same size. 



Vieillot alone, so far as I know, figures this species ; and though his repre- 

 sentation is by no means satisfactory, yet it is recognizable as the northern 

 species. Wilson, Audubon, and Malherbe figure the bird of the Southern 

 States, which is P. querulus, Wilson. Specimens of the present bird from 

 Pennsylvania are in the Academy Museum. 



26. Picus querulus, Wilson. 



Described by Wilson from specimens obtained in jNorth Carolina : but his 

 figure (pi. 15, fig. 1,) is not satisfactory. This species is very handsomely 

 given in the plates of both Malherbe and Audubon, but the latter seems only 

 to have known this bird, like Wilson, as a southern species. As stated in 

 the preceding article, this bird is distinct from the similar bird of Pennsylva- 

 nia, and can readily be distinguished by the smaller number of the transverse 

 bands on the back and shorter quills, especially of the latter, and by the 

 much smaller number of spots on the wing coverts and outer webs of pri- 

 maries. 



Specimens are in the Academy Museum from South Carolina and Georgia, 

 in both of which States it appears to be a common species. 



27. Picoides dorsalis, Baird. 



Baird, B. of N. Am. ii. pi. 85, fig. 1. 



This bird is, I suspect, identical with P. americanus (Swainson). In the 

 European P. tridactylus, the whole space on the back presents precisely the same 

 styles of character in different specimens, as in both P. americanus and P.* 

 dorsalis, that is to say: in some specimens there is a plain wide longitudinal 

 band of white, as in P. dorsalis, and in others this band is crossed by trans- 

 verse bands of black, as in P. americanus. This difference is not held to be 

 sufficient to indicate specific distinction. Several specimens of each descrip- 

 tion are in the Academy Museum, undoubtedly the same species, and figures 

 of each are so given by Malherbe, Mon. pi. 38, and Nauinann, B. of Germ., 

 pi. 137. 



One specimen only of this bird is in the Acad. Mus., which was brought in 

 a collection from Pike's Peak, Kansas, and is the second specimen known, 

 In my opinion, this bird bears no intimate relation to P. crissoleucus, Brandt., 

 which is also in the Acad. Mus. The latter is an ally of P. tridactylus, but 

 distinguished readily by the pure, nearly unspotted white of the under parts 



1863.] 



