366 • Bulletin American Museum of Natural History. [Vol. XXXVI, 



headed female to the black male. The latter plumage appears not to have 

 been described. It is dull, velvety black without trace of white anywhere 

 except on the under wing-coverts, which are white terminally margined 

 with black, and inner margins of the wing-quills. 



In view of the strikingly different plumage of the female.which has been 

 believed to be that of the male (though Cassin recorded his two Turbo 

 specimens as females) and the comparative rarity of males in transition 

 plumage, it is perhaps not surprising that the male of this species has es- 

 caped recognition as such; but it would not be surprising to discover that 

 it has been described under a different name, though I have been unable 

 to find one. 



Lawrence's type of mrgatus, loaned me by Dr. Stone, has the white 

 stripes on the crown and below wider than in the figure of Sclater's type (Cat. 

 Bds. B. M., XV, pi. xii) and two specimens from the Magdalena River. 

 We have, however, an essentially topotypical specimen of mrgatus from 

 the Atrato River which closely agrees with Magdalena Valley specimens, 

 and we have also a specimen from the Magdalena Valley which in the 

 width of the stripes agrees with others from eastern Panama. It is my 

 belief therefore that but one race of this bird is represented by our series, and 

 for that race, as stated above, I consider that Sclater's name has priority. 

 In addition to the specimens listed below we have also twelve males and 

 three females from eastern Panama (El Real, Tapaliza, etc.). 



Atrato River, 2 cf cf ; Iguamiando, Choco, 1 9 ; Algodonal, Magdalena 

 River, 1 9 ; Puerto Berrio, 3 d^cf , 1 9 ; Malena, 2 cf cf, 2 9 9; west of 

 Honda, 1 cf . 



(1883) Thamnophilus punctatus punctatus (Shaw). 



Lanius punctatus Shaw, Genl. Zool., VII, 2, 1809, p. 327 (Cayenne). 

 Thamnophilus ncevius Allen, Bull. A. M. N. H., XIII, 1900, p. 161 (Bonda; 

 Minca; Cacagualito; Onaca; Santa Marta). 



A pair from Barrigon, east of Villavicencio, agrees with a British Guiana 

 series, the female having the well-defined cinnamon-rufous or hazel cap of 

 this race. While agreeing with atrinucha in length of wing this form has 

 the bill considerably smaller, the average being 17.5 mm. as compared 

 with 19.5 mm. in specimens from the Magdalena Valley and Pacific coast. 



Barrigon, 2. 



(1885) Thamnophilus punctatus atrinucha Salv. & Godm. 



Thamnophilus atrinucha Salv. & Godm., Biol. Cent. Am., Aves, II, 1892, p. 200 

 (Cen. Am.; Hellmayr "fixes" Panama). 



