62 PEOCEEDINGS OF THE NATIONAL MUSEUM. vol. 64. 



This series is fairly uniform, though some specimens are lighter 

 than others; but judging from the color of the bill and compressed 

 condition of the lower mandible, forming a sharp ridge on the gonys, 

 these are birds of the year or not fully adult. One specimen (No. 

 248,390) from Kwala Besar is without the whitish tip to the upper 

 mandible and in four others in the series it is reduced to such a 

 minute point as to be practically absent. 



In describing Rhamphococcyx centralis^^^ I referred two specimens 

 from Parigi to Rhamphococcyx c. calorhynchus. They are birds of 

 the year as attested by the base of the lower mandible being blackish 

 and one of the birds having the top of the head strongly washed with 

 cinnamon-rufous. Comparing them with R. c. centralis of equal age 

 they are darker on the throats and have smaller bills and the other 

 measurements are decidedly smaller. They are lighter than northern 

 specimens of R. c. calorhynchus^ and as there are undoubted speci- 

 mens of R. G. centralis from the same locality I now think I was in 

 error and they had better be placed with the Middle Celebes form, 

 on geographic grounds, especially as they are immature birds. As 

 a matter of fact they are more or less intermediate and would seem 

 to indicate that the two forms intergrade on the borders of their 

 respective ranges. 



128. RHAMPHOCOCCYX CALORHYNCHUS CENTRALIS RUey." 



Five males and ten females from the following localities: Parigi, 

 September 10 and 19, 1916; Laboea Sore, November 21 and Decem- 

 ber 1, 1916; Rano Lindoe, March 21, 1917; Gimpoe, August 12, 1917; 

 Pinedapa, January 11-February 15, 1918. 



This race differs from Rhamphococcyx c. calorhynchus as follows : 

 In larger and more arched bill; longer wing; the top of the head 

 lighter ; in the lighter color of the throat, chest, and mantle ; and in 

 less purplish wings and tail. 



It might be that I have only redescribed Rhamphococcyx calor- 

 hynchus meridionalis Meyer and Wiglesworth but they say ^^ that 

 the only difference between their bird and the one from the north 

 is the lighter color of the top of the head. Hartert,^^ however, in 

 commenting on birds from Indrulaman says : " differ considerably 

 from the bird from northern Celebes in having a much paler crown 

 and a decidedly paler throat and it seems that also the tail as about 

 half an inch longer." He says nothing about the larger and more 

 arched bill, or longer wing, so the only course left to me for the 



»» Proc. Biol. Soc. Wash., vol. 31, 1918,, p. 156. 



^^Rhamphococcyx centralis Riley, Proc. Biol. Soc. Wash., vol. 31, 1918, p. 156 (Rano 

 Lindoe, Celebes). 



"Birds of Celebes, vol. 1, 1898, p. 227. 

 " Nov. Zool., vol. 3, 1896, p. 160. 



