350 On Birds from Henderson Island. 



right to the culmen, and though Count Salvador! says there 

 are a few greenish feathers at the base of the bill, a careful 

 examination fails to reveal anything of the sort, all being 

 glossy violet, though somewhat faded. The true locality of 

 the type of P. chalcurus must remain uncertain, but there 

 can be no doubt that the birds from the Paumotu Islands 

 are of the same species. 



The figure of the type-specimen of P. coralensis drawn by 

 Peale shows a bird with the crimson confined to the middle 

 of the crown, the forehead as well as the superciliary region 

 being grey. It is similar to an immature male from Niau 

 forwarded by Dr. Richmond, and I thinlv, as Cassin has 

 already suggested, that the type must be an immature 

 specimen. Against this it must be remembered that 

 Count Salvadori, who has examined the type-specimen, 

 believes that this surmise is not correct, " as the bird has 

 the first primary much attenuated at the tip, more so even 

 than in the type of P. chalcurus," which he takes to be the 

 same as P. coralensis (cf. Cat. Birds B. M. xxi. p. 105, 

 footnote). The synonymy of P. coralensis should therefore 

 stand as follows : — 



Ptilonopus coralensis Peale, Zoology U.S. Expl. Exped. 

 p. 190, pi. 51 (1848); Cassin, U.S. Expl. Exped. 2nd ed. 

 p. 272, pi. 32(1858). 



Ptilonopus chalcurus G. Jl, Gray, Cat. Birds Trop. Isl. 

 p. 37 (1859) (Cook or Hervey Islands). 



Ptilojms coralensis Salvad. Cat. Birds B. M. xxi. p. 104 

 (1893). 



Ptilopus smithsonianus Salvad. t. c. p. 105 (Carlsoff I,, 

 Paumotu Group). 



In addition to the above^ the following species were 

 also obtained at Henderson Island : — 



Sula piscator Linn. 

 Procelsferna carulea (Bennett). 

 Anous leucocapillus (Gould). 



Gt/ffis Candida (Gmel.). 

 Totanus incanus (Gmel.). 

 Calidris. arenaria (Linn.). 



