NO. 6 RECORDS OF BIRDS FROM PANAMA WETMORE 7 



the entire foreneck white above the narrow basal black collar. Also it 

 is spotted along the sides with black, and heavily with white on the 

 breast. Odontophorus parambae Rothschild, found in the tropical zone 

 from west-central Colombia south to Ecuador, has a single white band 

 across the lower area of the black foreneck. Odontophorus leucolae- 

 mus, more remote, in Costa Rica and western Panama, has the entire 

 upper foreneck white, with the lower area and upper breast jet black. 

 And finally there may be noted Odontophorus atrifrons of the Andes 

 of northern Colombia and O. erythrops melanotis found on Cerro 

 Pirre and Cerro Azul in Panama, in which the foreneck is solid black. 



All these are similar in size, form, and, so far as known, in habits, 

 so that it is reasonable to postulate common ancestry. Their present- 

 day differences in pattern of markings, coupled with variations in color, 

 may unite them in a super species, but these distinctions appear so 

 fixed and so definite that to group them as subspecies under one specific 

 name would conceal their interesting divergences. 



The name for the species here described is from the Greek dialeukos, 

 marked with white. 



Family Tyrannidae 

 ELAENIA CANICEPS ABSITA, new subspecies 



Characters. — Male, similar to that of Elaenia caniceps parambae 

 (Hellmayr)^ but lighter, clearer gray above and across the breast; 

 whiter on throat and abdomen ; partly concealed white area of center 

 of crown larger ; white edgings on lesser wing coverts more extensive. 

 Female, with pileum darker gray (around the white center) ; breast, 

 sides, and abdomen decidedly paler, less deeply yellow. 



Description.— Type, cf, U.S. Nat. Mus. 483342, from the old Tacar- 

 cuna Village site, headwaters of the Rio Pucro, 950 meters elevation, 

 on the base of Cerro Mali, Serrania del Darien, collected by Pedro 

 Galindo, July 4, 1963 (orig. no., Gorgas Mem. Lab. 3-00329). Crown 

 deep neutral gray, with an extensive, partly concealed central area in 

 which the basal two-thirds of each feather is pure white ; a narrow 

 line of grayish white across forehead and upper edge of lores; back, 

 rump, and upper tail coverts neutral gray ; wings black, with the wing 

 coverts tipped, and the inner primaries, secondaries, and tertials 

 broadly edged with white ; tail feathers mouse gray edged with neu- 

 tral gray, mainly toward base, and tipped narrowly with grayish white ; 



^ Serpophaga parambae Hellmayr, Bull. Brit. Orn. Club, vol. 14, Feb. 27, 

 1904, p. 54. (Paramba, elevation 3,500 feet, Provincia de Esmeraldas, Ecuador.) 



