82 VISCOUNT WALDEN ON THE BIEDS OE CELEBES. 



Treron viridis (Scop.), Wallace, Ibis, 1865, p. 374. 



vernam, Steph., ScUegel, Nederl. Tijdschr. Dierk. i. p. 70. 



Hah. Philippine Islands {type); Penang, Sumatra, Borneo, Macassar {Wallace); Java, 

 Gorontalo, Sumatra, Bangka {Schlegel). 



The Celebean form is here retained under the title of the Philippine bird, as I have 

 not been able to compare examples from the two localities. But both from Mr. AVallace's 

 and Professor Schlegel's remarks on the differences existing in examples from the dif- 

 ferent Indo-Malayan islands, it seems probable that the species inhabiting the localities 

 given above ^vill be all found to differ from one another specifically. On the Sumatran, 

 Javan, Bankan, and Celebean birds, Professor Schlegel has bestowed the title of grisei- 

 capilla. And yet he distinguishes the Javan and Celebean forms from the Sumatran 

 and Bankan species by remarking that the former has the head and throat dark greyish- 

 green, while the latter has those parts " jolie gris bleuatre." 



116. Osmotrekon' griseicauda (G. E. Gray), Mus. Brit. Columhce, p. 10, "patr. incert." 

 (1856); Wallace, ex Gray, P. Z. S. 1862, p. 344, "Sula Islands, Celebes;" 

 Schlegel, Nederl. Tijdschr. Dierk. 1866, pp. 210, 346 ; Wallace, Ibis, 1863, p. 319. 



Hob. Celebes, Sula Islands {Wallace). 



Professor Schlegel (/. c.) is unable to discover any sufficient and constant distinctions 

 between the Javan T. pulverulenta, Wallace, and this Celebean species. The Sanghir 

 bird, on account of its stouter bill, the learned Professor considers to possess greater 

 claims, but to be very closely allied. The Sula and Javan examples I have had an 

 opportunity of comparing exhibit the differential characters Mr. Wallace has insisted 

 on, and they seem to me sufficient. It would perhaps be convenient to separate the 

 maroon-backed members of Osmotreron under a distinct subgeneric title. 



Lamprotreeon, Bonaparte. 

 117. Lamprotreeon Formosa (G. E. Gray), P. Z. S. 1860, p. 360 ; Wallace, Ibis, 1865, 

 p. 379, " Celebes." 



Hob. Macassar, Menado {Wallace). 



Closely allied to P. superlus (Temm.), and hardly admitted as distinct by Professor 

 Schlegel. 



' The type of Treron, Yieillot, is C. curvirostra, Gm., ex Lath., a species as yet not satisfactorily identified, 

 and not C. aromatka, Gm., as stated hy Mr. G. R. Gray (Gen. and Subgen. no. ]654). To whatever species 

 Latham's Hooked-billed Pigeon belongs, it is evident from the plate (Syn. ii. pi. 59) that in it the corneous 

 culmen extends to the forehead. Prince Bonaparte (Consp. ii. p. 10) reduced Toria, Hodgs., to a synonym of 

 Treron but associated C. psiitacea and C. aromatka with Toria nipalensis, species not possessing the characters 

 on which Mr. Hodgson founded his genus. Treron =Toria contains only two species, T. nipalensis and T. nasica ; 

 C. curvirostris belongs to either the one or the other, probably (as already suggested hy Mr. Wallace) to T. tiasica, 

 Schlegel. 



