BANGS AND PENARD: NOTES ON AMERICAN BIRDS. 387 



Hellmayr {lor. cif., p. (HHi), in his "Revision dor Spix'schen typen," 

 doubtfully referred Pachyrhynchus variegatus Spix to Pachyrhynchus 

 poly diopter us (Vieillot), remarking that it might equally well repre- 

 sent the young of P. nigcr. After careful examination of Spix's plate, 

 which certainly represents a young male of the polychopterus group, 

 we have decided that it does not represent true polychopterus of South 

 Brazil. The wing measurement of approximately 75 mm., taken from 

 the plate, is much too small and more in agreement with that of the 

 males of either the Upper Amazonian or eastern Brazilian forms. 



Spix failed to state where he obtained the specimen, but it is reason- 

 able to assume that he procured the young bird at the same place as 

 the adult male figured by him in plate 45 under the name P. nigcr, 

 the type-locality of which has been designated by Berlepsch and 

 Hartert (luc. cit.) as "Amazonas prope Fonteboa." 



We would have preferred to place the name variegatus in the syn- 

 onymy of some one of the forms of polychopterus, rather than use it to 

 replace the time-honored name of niger, but in our judgment the evi- 

 dence will not permit of such a course. 



4. Pachyrhamphus polychopterus tristis (Kaup). 



f.Lanius atricapillus Merrem, Av. Icon, descr., 1784, p. 26 (Surinam). Cf. 



Berlepsch, Nov. zool., 1908, 15, p. 140. 

 Psaris marginatm truiis Kaup, Proc. Zool. soc. London, 1851, p. 48 (No type- 

 locality stated — we designate Cayenne) . Type. — ■ Originally in collection 



of Lord Derby. 

 Pachyrhamphus niger tobagensis Cory, Field mus. nat. hist. Publ. 190, orn. 



ser., 1916, 1, no. 10, p. 343 (Tobaso Island, West Indies). Type.— Field 



Museum of Natural History. 

 Pachyrhamphm mnccoimelli Chubb, Bull. Brit. orn. club, 1920, 40, p. 73 



(Bonasika River, British Guiana). Type — McConnell collection. 

 Pachyrhamphus alhiloris Chubb, Bull. Brit. orn. club, 1920, 40, p. 73 (San 



Estaban, Venezuela). Type. — British Museum, Sclater collection. 



SuBSPECiFic CH.'VRACTERS.— Similar to Pachyrhamphus polychopterus varie- 

 gatus (Spi.x) of Upper .\mazon (if at all distinguishable), and of about the same 

 size, but under parts slightly paler, not so intensely black (See remarks below 

 on individual variation in this form). 



Measurements. — Male (fifty-five specimens) — wing, 7L0-77.5 

 (74.8); tail, 52.5-60.5 (55.(j); tarsus, 17.2-19.0 (18.3); exposed cul- 

 men, 12.0-14.0 (12.8). 



Female (thirty-one specimens) — wing, 68.0-73.5 (71.1); tail, 



