Birds of Celebes: Podicipedidae. 
917 
from the Philippines and is only known as a summer visitor in some parts of 
China and of Japan, At present, however, P. tricolor is the only Grebe known 
to occur on the mainland of Celebes. 
Schlegel united both P. tricolor and P. gidaris with P. minor, and the two 
former have since occasionally been confused with one another or identified with 
P. minor. As Briiggemann and Count Salvadori have shown, P. tricolor is 
distinguishable from P. minor by several characters. The bill is much longer, 
the culmen straighter, there is a broader space of yellow at the base of the 
lower mandible, the blackish of the chin does not extend on to the upper throat 
and malar region, the secondaries are on the outer webs uniform hrowm (not 
white on the basal half thereof), the inner wmbs white laterally for only about 
half the width of the wmbs (instead of being here almost entirely white) . 
The secondaries and bill of P. gularis present the same differences -with 
P. tricolor as do those of P. minor; it differs further from P. tricolor by its black 
face and upper throat, with a stripe of chestnut running from the corner of 
the eye one-third of the way dowm the side of the neck, and the lower breast 
and abdomen are silky white. 
393. PODICEPS GULARIS J.Gd. 
Black-throated Little Grebe. 
a. ?llew Holland Grebe (1) Lath., Gen. Hist. 1826, X, 33. 
b. ? Podiceps novae-hollandiae (1) Steph., Gen. Zool. XHI, 18 (1826); (2) Briigg., Abli. 
Ver. Bremen 1876, V, 99; (3) Legge, B. Ceylon 1880, 1060; (4) Bams., Tab. 
List 1888, 22; (5) Cox & Hamil, Pr. L. Soc. X. S. "W. 1889, 422; [6j North, 
Nests & Eggs B. Austr. 1889, 348. 
Podiceps gularis (1) Gould, P. Z. S. 1836, 145; (2) Gray, List B. Br. Mus. 1848, pt. HE, 
Anseres, etc., 151; (III) Gould, B. Austr. 1848, VII, pi. 81; (IVj Rchb., Nat. 1848, 
t. Yin (Spl. ni), figs. 758 — 59; (5) Gld., Hb. B. Austr. 1865, H, 513; (6) Salvacl., 
Cm. Pap. 1882, HI, 469; (7) Rams., Pr. L. Soc. N. S. W. 1887, 173; (8) Salvad., 
Orn. Pap. Agg. 1891, 213; (9) M. & Wg., Abb. Mus. Dresden 1894, Nr. 4, p. 3. 
c. Podiceps minor (1) Schlegel, Mus. P.-B., Urinat., 1867, 46, part.; ? (2) Wald., Tr. Z. S. 
1872, Yin, 105. 
d. Podiceps tricolor (nec Gray); (1) Yord., N. T. Ned. Ind. 1882, XLn, 119; (2) id., ib. 
1884, XLIY, 205; ? (3) id., ib. 1886, XLYI, 222, ? (4) Everett, J. Str. Br. R. A. S. 
1889, 212; (5) M. & Wg., J. f. 0. 1894, 253. 
e. Tachybates gularis (1) MadaiAsz, Aquila 1894, 106. 
“Tenggoka”, Kabruang, Talaut, Nat. Coll. 
“Bararang woki”. Great Sangi, iid. 
For further synonymy and references cf. Salvadori 6. 
Figures and descriptions. Gould III, 5; Reichenbach IV\ Salvadori 6\ V^orderm. d 1. 
Adult. Above dusky, glossed with some indistinct colour more pronounced on head; primaries 
dull brown, white on inner webs towards their bases ; secondaries white, dull brovui 
on exposed parts of the outer webs; cheeks, ear-coverts, chin, and upper throat 
black; a stripe of chestnut leading from the eye above the ear-coverts to nearly 
half-way down the side of the neck, on which it widens and nearly encloses the 
black of the throat; rest of neck and throat brown, duslder with the hauy tips 
