712 
Birds of Celebes: Rallidae. 
A. moluccana is closely related to A. olivacea of the Philippines, which is 
larger, darker, and has the under-parts slaty grey, except the under tail-covetts, 
which are rufous brown. 
*306. AMAURORNIS ISABELLINA (SchL). 
Isabelline Water-hen. 
Plate XLIII. 
[Gallinula isabellina Teram. MS.] 
a. Euryzona isabellina (1) Bp., Compt. Bend. 1856, XLm, 599, Nr. 346 (descr. null.). 
b. Rallina isabellina (1) Sclil., Mus. P.-B., Ralli, 1865, 16, 78; (2) dray, HL. 1871, in, 
58, Nr. 10397; (3) Wald., Tr. Z. S. 1872, Vlll, 96; (4) Briigg., Abh. Ver. Bremen 
1876, V, 95; (5) Bosenb., Malay. Archip. 1878, 278; (6) Meyer, Ibis 1879, 142; 
(7) Bosenb., Zool. Garten 1881, 167; (8) W. Bias., J. f. O. 1883, 130, 140. 
c. Erythra isabellina (1) Salvad., Ann. Mus. Civ. Gen. 1875, VH, 679. 
Amaurornis isabellina (1) W. Bias., Ztscbr. ges. Orn. 1886, 158; (2) M. & Wg., Abh. Mus. 
Dresd. 1895, Mai, Nr. 8, p. 17. 
d. Oenolimnas isabellina (1) Sharpe, Bull. B. O. C. 1893, V, p. XXVH; Ibis 1893, 260; 
(2) id.. Cat. B. 1894, XXIH, 86; (3) Hart., Nov. ZooL 1897, 165. 
“Taktak”, near Manado, Nat. Coll. 
Descriptions. Schlegel b 1] Sharpe d 2. 
Adult male. Above bistre, washed with olive-grey on head, hind neck, mantle, back, scapulars, 
and wing-coverts, with cinnamon on the remiges; loral region like the crown; under 
parts rufous cinnamon, whitish on chin, upper throat, and malar region, darkest on 
sides, under wing-coverts and sides of neck, where it passes into the greyish olive of 
the liind neck; remiges below and some of the greater under wing-coverts 
more fawn-colour (q^ ad. Tomohon, 3. IV. 94: P.&E. Sarasin). 
Female. In coloration similar to the male, apparently a trifle smaller; “bill yellow-green"; 
in the skin the legs and feet are much paler (9, Tomohon, 10. HI. 94: 
P. & P. Sarasin). 
Young. A young example, probably not yet able to fly, is just like the adidts in coloration, 
but without the grey hue on the brown of the upper surface; “iris sepia; legs brown; 
bill reddish brown”; wing (feathers half-grown) 118 mm; tail ca. 40; tarsus 63; mid. 
toe with claw 62; bill fr. feath. of foreh. 30.5 (Tomohon, 17. Y. 94: P.& F. Sarasin). 
Measurements. 
Wing 
Tail 
Tarsus 
Mid. toe 
and 
claw 
Bill from 
forehead 
a. (C 260j ad., Gorontalo 1875 ^Riedel) . . . 
165 
66 
62 
62 
34 
b. (C 5264) ad., Manado (v. Mussch.) .... 
161 
66 
62 
64.5 

c. (C 10946) ad., near Manado, Aug., Sept. 92 (N.C.) 
165 
63 
67 
69 
36 
d. 'C 10484) ad., “Celebes” 1876 . . . 
162 
— 
60 
69 

e. (C 10517) ad., “Celebes” .... 
164 
70 
63 
64.5 
32.5 
f. (Sar. Coll.) ad., Tomohon 14. IV. 94 
175 
68 
67.5 
67.5 
37.5 
g. (Sar. Coll.) ad., Tomohon, 3. IV. 94 . . . 
169 
_ 
65.5 
65 
36.5 
h. (Sar. Coll.) 9 ad., Tomohon, 10. ITT 94. . . 
162 
— 
65.5 
63.5 
35 
Distribution. North and West Celebes: — Minahassa (Meyer b 6, Bruijn c 1, etc.), Gorontalo 
Distr. (Forsten b 1, Rosenberg b 1, b 4, b7, Riedel J), West Tawaya, Celebes 
(Doherty d 3). 
