Birds of Celebes: Cacatuidae. 
129 
Mai. Arcliip. 1878, 275; (10) Meyer, Ibis 1879, 44, 145; (11) Krukenberg, Vergl. 
physiol. Stuclien 1882, II, 2. Abth., 29, 33, 35; (XII) Meyer, Yogelskelette 1881—82, 
t. XVIII; (13) W. Bias., Ztschr. ges. Orn. 1886, 195; (14) W. Marsh., Z. Vortr. 
Die Papag. 1889, 31; (15) Salvad., Oat. B. XX, 1891, 121; (16) Blittik, Z. Erg. 
Weber’s Eeise Ost-Ind. 1893, ID, 273; (17) M. & Wg., Abh. Mus. Dresd. 1895, 
Xr. 8, p. 5; (18) iid., ib. 1896, Xr. 1, p. 7; (19) Hartert, Xov. Zool. 1897, 164. 
d. Plyctolophus sulphureus (I) Lear, 111. Parrots 1832, pi. 4; (II) Selby, Xat. Libr., Parrots 
1836, 129, pi. 14; (3) Xitzsch, Pterylogr. 1840, 146; id., Engl. Ed. 1867, 102. 
e. Psittacus sulphureus minor vel moluccensis (I) Bourjot, Perr. 1837 — 38, pi. 80. 
f. Plictolophus sulfureus (1) Finsch, Papag. I, 1867, 296 — 300, pt., D, 1868, 942; (II) 
Bchnw., Vogelbilder, 1878 — 83, t. IV, f. 1. 
g. Plissolophus cristatus (1) Echnw. (nec. L.), J. f. 0. 1881, 29 (Consp. Psitt. 1881, 29). 
“Katella” or “Catala”, Grorontalo Disk, Eosenh. d 1, 9. 
“Gatalla” and “Cacatua puti” (malay), Meyer 10. 
For further synonymy and references see Salvad. 15. 
Figures and descriptions. Lear d I] Selby dll', Bourjot el; Eeichenow f II; Meyer 
c XII (skeleton); S. Muller a 2; Schlegel c 2; Grarrod c 4^ c 5 (anal); Einsch 
f 1; Salvador! c 15. 
Adult (^. White, with a light wash of sulphur-yellow, especially strong on the under surface, 
under side of wings and of tail; crest (85 mm), ear-coverts and basal part of 
the remaining feathers of head deep sulphur-yellow. (The mantle and wings 
above of this and of 8 other specimens are nearly white without any yellow wash to 
speak of, but this hue seems to fade through exposure, as it may be found at the bases of 
the feathers and on the lower hack and upper tail-coverts under cover of the wings. — 
Kwandang, Xorth coast of Celebes, — Xr. 3536). Iris of adult red (Meyer 10). 
Female. Like the male, but with a smaller bill. 
Young. The yellow of the plumage much less intense than in the old ones; iris dark — 
either black or brown (Meyer id). 
According to Einsch the nestlings of the white Cockatoos are clothed in long 
white down (Papag. I, 272); the same author mentions a young one of the Flores 
species, v/hich is very closely related to the Celebesian one, in which the yellow 
feathers of the ear-coverts were in process of development (1. c. 
297) 1) 
• 
Measurements. 
Wing 
Tail 
Tarsus 
Culmen 
from cere 
a. (Xr. 3536) (V Kwandang, X. Cel 
236 
110 
19.5 
39 
b. (Xr, 3535) (V Kwandang, X. Cel 
235 
116 
20 
40 
c. (Xr. 3537) Q Paguatt, Tomini Bay 
232 
114 
19 
35 
d. (C 1331) Q Paguatt, Tomini Bay 
235 
116 
— 
34.5 
e. (C 1329) Q Paguatt, Tomini Bay 
230 
114 
— 
35.2 
f. (C 1325) ( 3 ^ Paguatt, Tomini Bay 
243 
122 
— 
37 
g. (C 1330) Q Kwandang, X. Cel 
221 
110 
— 
35 
h. (C 6590) ? Grorontalo Distr 
230 
110 
— 
38.5 
i. (Xr. 3538) ? Gorontalo Distr. 
243 
113 
— - 
40.5 
j. (Sarasin Coll.) Q Buol, X. Cel., 15. VLLL. 94 . . 
237 
115 
_ 
34 
k. (Sarasin Coll.) Maroneng, Gulf of Mandar, 18. Vlil. 95 
234 
110 
— 
39 
1) The entire series of this genus in the British Museum are, without exception, marked by Count Sal- 
vadori as adult! 
Meyer & Wiglesworth, Birds of Celetes (Oct. 16th, 1897). 
17 
