( 53 ) 



Godeffr. XII. p. 20; Joiirn. f. Ornith. 1880. p. 2S5, and This 1881. ]>. 1 12), but neither 

 Sharpe {Gat. B. XVII. p. 200) nor "Wigleswortli {Ates Polynes. p. Ki) would 

 believe in what tliese authors stated. Onstalet, however, came to the same con- 

 clusion, in spite of some specimens (evidently wrongly sexed) which did not agree 

 with his theory. 



Halcyon cinnamomina is only known from Guam, while Baijian is the home 

 of another species, the Polew Islands are inhabited by H. peltm<c/Mis Wiglesw. 

 (Aves Polynes. pp. 1.5, 16), and Ponapi^ by H. reichenhachi (Hartl.), of which 

 //. mediocris Sharpe is no doubt the male, judging from the case of the Guam sjiecies. 



(i. Collocalia fuciphaga (Thnnb.) (Oust. I. p. 187). 



We got it from Guam and Saipan. If further researches sliould enable ns to 

 split this widespread species up into subspecies, then the name ranikorensi.-i Qnoy 

 & Gaim. would have to stand for this form, but I cannot 3-et see the possibility of 

 recognising it as different. Marche found it on Saipau and Rota. 



7. Rhipidiira uraniae Oust. (Oust. I. p. \^() purtin). 



Rhipidura nrrmkie Owai. in BiiU. .Soc. Pluhmi. Paris 1881, March; Biittikofer in Xntes Lei/den 



Mus. 1893. p. 77. 

 Rh. atrigulans Reichenow in .Tourn.f. Orii. 1885. p. 110. 



In the case of the PJiipifhirae from the Marianne Islands I have to diiler 

 entirelv from M. Onstalet. 1 am sorry to say that there is not more than a single 

 fact in which I can agree with his recent views, as laid down in his great work on 

 the birds of the Marianne Islands. Formerly M. Onstalet described as a new 

 species Rh. uraniae from the Marianne Islands. This name belongs to the black- 

 throated form of Guam. (See original description and Onstalet, op. cit. p. 192.) 

 Recently the author declared his Rh. uraniae not only identical with the specimens 

 from Saipan, but he referred both forms to Rh. irrsicolor Hartl. & Finsch from 

 Yap. He concludes from his specimens that the white-throated birds are in 

 breedino- plumage, while those with the black throat are in autumn or winter dress. 

 This supposition, however, is wrong, for not only have our men shot both forms on 

 the two islands of Saipan and Guam in the same mouths, but we also got nests and 

 eggs of the black-throated Guam birds. Thus our large series jiroves beyond a 

 sliadow of doubt that the two islands of Saipan and Guam are inhabited Ijy two 

 different forms of Rhipidura, which replace each other. The one from Guam must 

 bear Oustalet's name of Rh. uraniae. The latter author's supposition (derived from 

 Reichenow's description) that Rh. atriyalaris, described from the Pelew Islands, 

 is the same as the Guam species, is quite correct, for I sent skins 0^ Rh. uraniae to 

 Prof. Reichenow, who kindly identified them with his type and found them entirely 

 similar. Therefore Rh. uraniae would inhabit the Pelew Islands and Guam ! This 

 is a very peculiar fact, as we find in Yap, between the Pelew and Marianne Islands, 

 a white-throated form, and on the Pelew Islands another not very distant, though 

 ((uite distinct species, viz. Rh. lepida. I cannot therefore help casting strong doubt 

 on the locality given for Reichenow's Rh. atriyularis, a doubt which is strengthened 

 by Reichenow's Phlegoenas lirgo and Gorms kubaryi, which are both Guam species, 

 being described from the Pelew Islands. 



Local name Guam: " Chichilica." Bill above Ridgw. II. 3 (blackish slate): 

 iris dark III. 2 (clove-brown); legs and toes II. .5 (slate-grey); claws II. X 



