BAXGS AXD PENATID: XOTES ON AMERICAX BIRDS. 391 



to the j\I. ( . Z., informed us that in his forthcoming paper on the 

 birds of the Santa Marta region, he intended to use the name cinerei- 

 ventris for the Santa Marta bird. He examinetl our series from Santa 

 Marta, and pronounced it much more uniform than the series in the 

 Carnegie Museum, the hitter series lieing much larger and containing 

 dark specimens \ery close to, and almost indistinguishable from, some 

 Venezuelan examples. It Avas his opinion that Sclater's type really 

 came from Santa Marta and represents an extreme variant close to the 

 Venezuelan form. In view of this it would be well to compare the 

 type of P. ciiicreivcntris Sclater with a large series from Santa Marta 

 before coming to a final decision in the matter. For the present, 

 rather than rename the wSanta IMarta bird on the evidence at hand, 

 we retain for it the name cinnrirentri.s-. 



6. PaCHYRHAMPHUS POLYCHOPTERUS C0STARICEN8IS Chubb. 



I'dchijiiuDnphu^^ coKlaricensi.s Chubb, Bull. Brit. orn. club, 1920, 40, ]). 74 

 (Bebedero, Costa Rica). Type. — British Museum, Salvin-Godman col- 

 lection. 



SuBSPECiFic CHARACTERS. — Very similar to Pachyrhamphiis polychopteruyi 

 cinereirentn's Sclater of Santa Marta, but slightly smaller; under parts paler 

 gray with a more pearly tone — dee\) gull-gray (of RidgAvay) rather than 

 light neutral gray. 



Measurements. — Male (twenty specimens) — ■ wing, 68.0-74. o 

 (71.0); tail, 50.5-57.3 (54.2); tarsus, 17.5-19.0 (1S.5); exposed 

 culmen, 12.0-13.0 (13.0). 



Female (ten specimens) — wing, 05.0-67.0 (66.3); tail, 50.0-52.5 

 (51.0); tarsus, 17.5-19.0 (18.4); exposed culmen, 11.5-13.5 (12.3). 



Range. — Panama, Costa Rica, western Nicaragua (Ridgway, 

 cine reive ntr is). 



Specimens examined. — Panama: Line of Panama Railroad, 1 cT, 

 1 9 ; Isthmus, Atlantic side, 1 cf ; Divala, 2 cf cf , 1 9 ; Boquete, 1 cf ; 

 Bogaba, 1 cf ; Chiriciui, 1 cT ; Focoumc, 1 9 . Costa Rica: El General, 

 6 d'cT', 5 9 9 ; Bolson, 4 cf d"; Boruca, 2 d^cT, 3 9 9 ; Pozo Azul, 

 1 cf, 1 9 ; Senorio, 1 cf ; Barranca Puntarenas, 1 of. Total, 34. 



Remarks. — • P. p. costarirrnsis and P. p. cinerciventris are very close 

 subspecies, and not always distinguishable separately. In series, 

 however, the difference is perceptible, especially in the more pearly 

 gray appearance of the Costa Rican bird. 



