82 VISCOUNT WALDEN ON THE BIRDS OF CELEBES. 
Treron viridis (Scop.), Wallace, Ibis, 1865, p. 374. 
vernans, Steph., Schlegel, Nederl. Tijdschr. Dierk. i. p. 70. 
Hab. Philippine Islands (type); Penang, Sumatra, Borneo, Macassar (Wallace) ; Java, 
Gorontalo, Sumatra, Bangka (Sch/lege/). 
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. Wallace'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 will 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. OsmorrERon’ GRIsEIcauDA (G. R. Gray), Mus. Brit. Columba, 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. 
Hab. Celebes, Sula Islands (Wallace). 
Professor Schlegel (7. c.) is unable to discover any sufficient and constant distinctions 
between the Javan 7’. 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. 
Lamprotreron, Bonaparte. 
117. Lamprorreron rormosa (G. R. Gray), P. Z. 8. 1860, p. 360; Wallace, Ibis, 1869, 
p- 379, “ Celebes.” 
Hab. Macassar, Menado (Wallace). 
Closely allied to P. swperbus (Temm.), and hardly admitted as distinct by Professor 
Schlegel. 
1 The type of Treron, Vieillot, is C. curvirostra, Gm., ex Lath., a species as yet not satisfactorily identified, 
and not C. aromatica, Gm., as stated by Mr. G. R. Gray (Gen. and Subgen. no, 1654). To whatever species 
Latham’s Hooked-billed Pigeon belongs, it is evident from the plate (Syn. ii. pl. 59) that in it the corneous 
culmen extends to the forehead. Prince Bonaparte (Consp. ii. p. 10) reduced oria, Hodgs., to a synonym of 
Treron, but associated C. psittacea and C. aromatica with Toria nipalensis, species not possessing the characters 
on which Mr. Hodgson founded his genus. Z’reron =Toria contains only two species, 7. nipalensis and 7. nasica ; 
C. curvirostris belongs to either the one or the other, probably (as already suggested by Mr. Wallace) to 7. nasica, 
Schlegel. 
