ART. 4 BIRDS OF THE MEXTAWI GROUP — RILEY 27 



PYCNONOTUS PLUMOSUS PORPHYREUS Oberholser 



Pycnonotus plimiostis porphyrcus Oberholse31, Smiths. Misc. Coll., vol. 60, 



no. 7, 1912, p. 11 (North Pagi Lsland). 

 Pycnonotus pltimosus inornatus Chasen and Kloss, Ibis, 1926, p. 290. 



Eleven males and six females, Sipora; four males and five fe- 

 males, Siberut. 



The above material agrees with the series in the United States 

 National Museum from the Pagi Islands, Nias, Banjak, and Batu 

 Islands, Pulo Mansalar and Tapanuli Bay, West Sumatra, all of 

 which evidently represent one race. A series from east Sumatra, 

 Banka, Billiton, the Malay Peninsula islands off Singapore, and 

 south Tenasserim represent another race, paler below — especially 

 on the belly — than the one from west Sumatra. The type locality 

 of Pycnonotus plumosus Blyth is Singapore. Chasen and Kloss 

 record the irides of the Mentawi and Sumatran birds as yellow and 

 those ^rom the mainland as red. This agrees with Dr. W. L. 

 Abbott's notes on the color of the eyes for birds of the islands off 

 the west coast of Sumatra and Tapanuli Bay, west Sumatra, but the 

 birds from east Sumatra he records as crimson brown and those 

 from the mainland as dull red or reddish brown. There are thus 

 evidently two forms of the species occurring in Sumatra, one in 

 the east and the other in the west and the islands off the coast. 

 This makes the application of Bonaparte's '^ name, Pycnonotus 

 inornatus uncertain, until some one familiar with the forms of this 

 species has an opportunity to examine the type in Leyden. For the 

 present it is better to use a name of certain application. There 

 appears to be little or no difference in size between the two forms. 



COPSYCHUS SAULARIS PAGIENSIS Richmond 



Copsychus saularis pagiensis Richmond, Proc. Biol. Soc. Washington, 

 vol. 25, 1912, p. 105 (North Pagi Id.).— Chasen and Kloss, Ibis, 1926, 

 p. 291. 



One adult male and two adult females, Sipora; one immature 

 female, Siberut. 



The above adult male agrees with the type of C. s. 'pagiensis fairly 

 well. The wing in the type is a trifle shorter, but it has a longer bill 

 than the Sipora male ; in the latter the extreme tip of the bill is miss- 

 ing, but this is not enough to account for the difference. The culmen 

 in the type measures 23.5; in the Sipora male, 19 + . The culmen in 

 the two females measures 22.5, 20 mm. ; in a female from North Pagi, 

 22. In the immature bird from Siberut the culmen measures 22.5 

 and it undoubtedly belongs to this large long-billed race. 



s^Consp. Gen. Av., vol. 1, 1850, p. 263 (Sumatra). 



