390 bulletin: museum of comparative zoology. 



examination, be found to apply to a northern South American form, 

 perhaps the one under discussion here. 



5. Pachyrhamphus polychopterus cinereiventris Sclater. 



Pachyrhamphiis cinereiventris Sclater, Cat. Amer. birds, 1862, p. 242 ("S. 

 Martha," ex Verreaux). Type. — ■British Museum, Sclater collection. 



SuBSPECiFic CHARACTERS. — Similar to Pachyrhamphus polychopterus tristis 

 (Kaup) of Venezuela, but smaller; under parts paler, more uniform in color, 

 sometimes obscurely freckled with whitish. 



Measurements. — Male (twenty specimens) — wing, 70.0-75.5 

 (72.6); tail, 51.0-57.0 (53.3); tarsus, 17.0-19.0 (18.2); exposed cul- 

 men, 11.5-13.0 (12.4). 



Female (fourteen specimens) — -wing, 67.5-69.5 (68.1); tail, 

 48.0-53.0 (50.5); tar.sus, 17.0-18.5 (17.8); exposed culmen, 11.5- 

 13.0 (12.4). 



Range. — Santa Marta district of Colombia. 



Specimens examined. — Colombia (Santa Marta region) : " Sta. 

 Martha," 1 d" ; Cienaga, 1 d" ; Bonda, 15 cTcT, 10 9 9 ; Mamotoco, 

 1 9 ; Fundacion, 3 cf cf , 19; Calamar, 1 9 ; Gamara, 1 cf ; 

 Tucurinca, 1 9 ; Aguachioa, 1 9 ; Jaraquiel, 1 9 . Total, 37. 



Remarks. — This form is quite distinct from the form inhabiting 

 Venezuela, Guiana, and Trinidad. Not only is it slightly smaller, 

 but the under parts are paler and seldom show much mottling. The 

 darker specimens, however, as might be expected, approach closely 

 in coloration to P. p. iristis, but in such cases the size readily dis- 

 tinguishes them. The paler specimens approach the next form, 

 P. p. costaricensis Chubb, and are hardly distinguishable from the 

 darker specimens of that form except in parallel series. 



Hellmayr (Nov. zool., 1906, 13, p. 27), having examined the type 

 of P. cinereiventris Sclater in the British Museum, applied the name 

 to the Trinidad bird, explaining that the type "is dark cinereous, 

 more or less freckled with dull blackish, especially on the throat and 

 foreneck." Later he and Graf von Seilern (Archiv naturg., 1912, 

 abt. A, heft 5, p. 89) used the name for the Venezuelan bird, with the 

 remark that probably the type came from Venezuela or Trinidad. 



We were strongly inclined to follow Hellmayr in this disposition of 

 the name cinereiventris, and would have done so here, had we not been 

 influenced b\' other considerations. Mr. Todd, on his recent visit 



