38 THE VOYAGE OF H.M.S. CHALLENGER. 



No. 9. Tongatabu. Female. 



No. 25. „ Male. 



[Shot July 28 and 21. Eyes dark red.' 



6. Ptilopus porphyraceus, Forst. 



Ptilinopm porphyraceus, F. and EL, Ornith. Central-Polyn. p. 119; Proc. Zool. Soc, 1869, 

 p. 517 (Tonga); Journ. f. Ornith. 1870, p. 131 (Tonga); Layard, Proc. Zool. Soc, 1876, 

 p. 502 (Tonga). 



Ptilopus purpuratus, Elliot, Proc. Zool. Soc, 1878, p. 525. 



No. 6. Tongatabu. Male. [Eyes yellow.] 



No. 7. „ Male. 



[Shot July 21 and 22. These birds were very shy ; though we heard them frequently 

 it was very difficult to get a shot at them. The ' coo ' of this dove is not so loud, and is 

 much sweeter than that of the large fruit-pigeon (Carpophaga).^ 



Of this species, which is peculiar to the Friendly group, a full description and characters 

 of distinction from the Fijian and Navigators' Ptilinopusfasciatus are given as cited above. 



7. Carpophaga pacifica, Gm. 



Carpophaga pacifica, F. and H., Ornith. Central-Polyn., p. 142; Journ. f. Ornith., 1870, p. 134 

 (Tonga) ; Layard, Proc Zool. Soc, 1875, p. 503 (Tonga); Finsch, Proc. Zool. Soc, 1877, 

 p. 726. 



No. 18. Tongatabu. Male. Shot July 21. 



[This large pigeon ' coos ' very like our pigeon at home. It appears to be common 

 but shy. Eyes red.] 



No. 26. Tongatabu. Male. [Eyes red.] 



No. 31. „ Female. 



No. 79. Samoa. Female. [Eyes and legs red. Presented alive by the Rev. 

 George Brown.] 



The sexes are alike in plumage, but the female is without the knob on the base of the 

 bill, and exactly agrees with specimens from the Navigators' and the Fijis ; the vinaceous 

 tinge in the male birds seems to be more strongly developed during time of incubation. 



In our Ornithology of Central Polynesia, Dr Hartlaub and I erroneously united 

 Carpophaga oceanica, Less., with this species ; but since then we have shown (Proc. 

 Zool. Soc, 1872, p. 101, and Journ. Mus. Godeffr. Heft viii. p. 26, 1875) that the 

 latter is a distinct species, occurring in the islands of the Western Pacific. Carpophaga 

 pacifica is confined to the Central-Polynesian Islands. 



8. Ardea sacra, Gm. 



Ardea sacra, F. and H., Ornith. Central-Polyn., p. 201; Journ. f. Ornith., 1870, p. 136 (Tonga); 

 Layard, Proc. Zool. Soc, 1875, p. 503 (Tonga); Finsch, Proc. Zool. Soc, 1877, p. 726. 



No. 19. Tongatabu. Female. [Eyes yellow.] 



