BANGS AND PENARD: SURINAM BIRDS. 45 



66. Chaemepelia talpacoti (Temminck & Knip). 



Three specimens, both sexes, Vicinity of Paramaribo, January, 

 March, and December. 



This bird is apparently far less common than the following species. 



67. Chaemepelia arthuri, sp. nov. 



Trjpe.— M. C. Z. 80,921 (289 Penard Coll.). Adult a". Vicinity 

 of Paramaribo, Surinam, 4 March, 1913. E. Graanoogst. 



Six specimens, all adult males except one young female, Vicinity of 

 Paramaribo, January, February, March, and August. Besides these 

 there are two specimens in the M. C. Z. also from the vicinity of 

 Paramaribo, obtained by Francis W. Cragin, U. S. consul in Surinam 

 from 1846 to 1858, and one from Santarem, Brazil, collected by Charles 

 Linden. 



Named in honor of Arthur P. Penard, co-author of " De ^•ogels van 

 Guyana," through whose efforts the present collection was formed. 



Characters. — Size of C. talpacoti (Temm. & Knip) and C. rufipennis 

 (Bonap.), differing from the former in having rufous on the inner 

 webs of the primaries — merely a trace on the outermost and gradually 

 increasing in extent, reaching a maximum of intensity in the fourth, 

 fifth, sixth, and seventh (from outside). Tips of all primaries black; 

 in the closed wing the rufous shows as a conspicuous patch on the 

 under side, but the outer aspect of the primaries is black except for a 

 slight rufous edging on the outer vane of the second and third prima- 

 ries (from outside); under wing-coverts mostly black, but always 

 somewhat mixed with rufous, especially along the carpal edge (in 

 C. talpacoti the primaries and under wing-coverts are all black). C. 

 arthuri differs from C. rufipennis in having the outer edges of the 

 primaries not rufous but blacky and in having the under wing-coverts 

 mixed rufous and black instead of rufous. 



Measurements. — Type, adult cf ; wing, 88;* tail, 62.5; tarsus, 15; 

 exposed culmen, 11.5. 



Remarks. — This species, in its characters is almost exactly inter- 

 mediate between C. talpacoti and C. rufipennis; but we hesitate to 

 rank it as a subspecies, which would necessitate reducing all three 

 forms to subspecific rank, because perfectly typical C talpacoti occurs 

 in the same region with it. The species occupies a very natural faunal 



