712 



Birds of Celebes: Rallidae. 



A.moluccana is closely related to A. oHvacea of the Philippines, which is 

 larger, darker, and has the under-parts slaty grey, except the under tail-coverts, 

 which are rufous brown. 



^ * 306. AMAURORNIS ISABELLINA (Schl.). 

 Isabelline Water-hen. 

 Plate XLIII. 



[Gallinula isabellina Teniiii. MS.] 



a. Euryzona isabellina (1) Bp., Compt. Rend. 1856, XLIII, 599, Nr. 346 (descr. null.). 



b. Rallina isabellina (1) Schl., Mus. P.-B., Ralli, 1865, 16, 78; (2) Gray, HL. 1871, HI, 



58, Nr. 10;$i)7; (;!) Wald., Tr. Z. S. 1872, VIII, 96; (4) Briigg., Abh. Ver. Bremen 

 1876, V, 95; (5) Eosenb., Malay. Arcliip. 1878, 278; (6) Meyer, Ibis 1879, 142; 

 (7) Roscnb., Zool. Garten 1881, 167; (8) W. Bias., J. f. 0. 1883, 130, 140. 



c. Erythra isabellina (1) Salvad., Ann. Mus. Civ. Gen. 1875, VII, 679. 



Amaurornis isabellina (1) W. Bias., Ztschr. 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. XXVU; Ibis 1893, 260; 



(2) id., Cat. B. 1894, XXIH, 86; (3) Hart, Nov. Zool. 1897, 165. 



"Taktak", near Manado, Nat. Coll. 



Descriptions. Schlegel h 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 

 13 arts 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 hind neck; remiges below and some of the greater under wing-coverts 

 more fawn-colour ((J' ad. Tomohon, 3. IV. 94: P.& F. Sarasin). 



In coloration similar to the male, apparently a trifle smaller; "bill yellow-green"; 

 in the sldn the legs and feet are much paler {Q , Tomohon, 10. HE. 94: 

 P.&F. Sarasin). 

 A young ex;uu]ile, jirobably not yet able to fly, is just like the adults 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 fi-. feath. of foreh. 30.5 (Tomohon, 17. V. 94: P.& F. Sarasin). 



Mitt, toe 



Measurements. 



Female. 



Young. 



AVing 



Tai: 



Tarsus 



and 

 claw 



a. (C 260j ad., Gorontalo 1875 iRiedelj ... 165 



b. (0 5264) ad., Manado (v. Mussch.) .... 161 



c. (C 10946) ad., near Manado, Aug., Sept. 92 (N.C.) I 165 



d. (C 10484) ad., "Celebes" 1876 I 162 



164 

 175 

 169 

 162 



e. (C 10517) ad., "Celebes" 164 70 



/. (Sar. Coll.) cf ad., T(miolion 14. IV. 94 . . 175 68 



g. (Sar. Coll.) (f ad., Tomohon, 3. IV. 94 . . 



h. (Sar. Coll.) Q ad., Tomohon, 10. HI. 94. . 



Distribution. North and West Celebes: — Minahassa (Meyer h 6, Bruijn c 1, etc.), Gorontalo 

 Distr. (Forsten b J, Rosenberg b 1, b 4, b7, Riedel 1), West Tawaya, Celebes 

 (Doherty d 3). 



66 



66 

 63 



62 



62 



67 



60 



63 



67.5 



65.5 



65.5 



62 



64.5 



69 



59 



64.5 



67.5 



65 



63.5 



Bill from 

 forehead 



34 



36 



32.5 

 37.5 

 36.5 

 35 



