408 Oberholser, Races of Hedymeles melanocephalus. [jjj y 



almost the same as Salpinctes guadelowpensis. Furthermore, in 

 testing Mr. W. De W. Miller's criterion of distinctness for Salpinch's 

 guadeloupensis 1 the ratio of wing-length to exposed culmen we get 

 the following results in our series; Salpinctes obsoletus obsoletus, 

 3.4-4.2; Salpinctes obsoletus ncglectus, 3.3-3.7; Salpinctes guadelou- 

 pensis, 3.0-3.5. It is thus evident that even this character inoscu- 

 lates. The Guadalupe Rock Wren and its subspecies should 

 therefore stand as 



Salpinctus obsoletus guadeloupensis Ridgway. 



Salpinctus obsoletus proximus Swarth. 



THE GEOGRAPHIC RACES OF HEDYMELES MELANO- 

 CEPHALUS SWAINSON. 



BY HARRY C. OBERHOLSER. 



That there are two subspecies of Hedymeles 2 melanocephalus is 

 pretty generally recognized. Determination of the 245 specimens 

 of this species in the United States National Museum, including 

 the Biological Survey Collection, has, however, revealed the fact 

 that the names and geographic ranges of these forms seem to be 

 in need of readjustment. 



The results of this study appear worth placing on record, which 

 we shall endeavor to do in the following pages. 



Hedymeles melanocephalus melanocephalus Swainson. 



Guiraca melanocephala Swainson, Philos. Mag., New Ser., I, June, 

 1827, p. 438 (Temascal tepee, Mexico, Mexico). 



Fringilla epopeea Lichtenstein, Preis-Verz. Saug., Vogel, Amphib., 

 Fische, und Krebse Mex., 1830, p. 2 (Mexico). 



iThe Auk, XXXVI, No. 2. April, 1919, p. 295. 



2 For the use of the generic name Hedymeles instead of Zamelodia, cf. Oberholser, ' The 

 Auk,' XXXVI, No. 1, January, 1919, p. 115. 



