192 MR. W. R. OGILVIE-GRANT ON THE [Mar. 6, 



21. Ehytidoceros plicatus. 



Rhytidoceros plicatus (Perm.), Salvad. t. c. i. p. 392. 



a. <S ad. Aola, Guadalcanar ; 14.4.87. Bill white, reddish at 

 base ; legs black ; iris red. Food, fruits and seeds. 



b. § ad. Aola, Guadalcanar ; 14.4. 87. Bill white, reddish at 

 base ; skin of throat chalk-white, round eye blue ; legs black ; 

 iris red. 



c. (S imm. Aola, Guadalcanar ; 22. 4. 87. Bill yellowish 

 white, base reddish ; throat chalk-white, skin of eye blue ; legs 

 black ; iris reddish brown. 



d. S ad. Aola, Guadalcanar ; 26.4.87. Bill dirty white, red- 

 dish at base ; throat chalk-white, skin round eye blue ; legs black ; 

 iris reddish yellow. 



e. <S imm, Aola, Guadalcanar ; 27.4.87. Bill white, base red ; 

 skin of throat chalk-white, round eye blue ; legs black ; iris reddish 

 brown. 



f,g. S ad., cJ imm. Aola, Guadalcanar; 30. 4. 87. Bill 

 white, base red ; skin of throat chalk-white, round eye pale blue ; 

 legs black ; iris reddish yellow. 



h. 2 imm. Aola, Guadalcanar; 10. 5. 87. Bill white, base 

 red ; skin of throat and eyes white ; legs black ; iris dull yellow. 



i. 5 imm. Aola, Guadalcanar; 13.5.87. Bill dirty white, 

 base red ; skin of throat and eyes pure white ; legs black ; iris dull 

 yellow. 



Tc. c? ad. Aola, Guadalcanar; 14.5.87. Bill dirty white, base 

 red ; skin of throat white, round eye pale blue ; legs black ; iris 

 reddish yellow. 



I. $ ad. Aola, Guadalcanar ; 29.5.87. Bill dirty white, base 

 red ; skin of throat and round eye chalky white ; legs black ; iris 

 brown. 



This series shows the interesting and curious development with 

 age of the horny plates on the upper mandible. The youngest 

 specimens have merely a raised lump, while the oldest has no less 

 than seven plates, and the bill is longer and stronger than in the 

 younger birds. 



The young male (spec, c) has a black spot on the extremity of 

 each of the tail-feathers, which is absent in the rest of the series, and 

 Mr. Woodford assures me it is the only specimen in which he ever 

 observed this peculiarity. 



22. Alcedo ispidoides. 



Alcedo ispidoides, Less., Salvad. t, c. i. p. 408. 



a. tS ad. Aola, Guadalcanar ; 20.4.87. Bill black ; legs dark 

 red-brown ; iris brown. Pood, shrimps. 



h. $ imm. Rovatu River; 22. 5. 87. Bill black; legs red; 

 iris brown. 



c. d" ad. Aola, Guadalcanar; 1. 7. 87. Bill black; legs red ; 

 iris brown. 



