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. gularis with P. minor, and the two 

 former have since occasionally been confused with one another or identified with 

 P. minor. As Briiggemann and Count Salvador! 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 brown (not 

 white on the basal half thereof), the inner webs white laterally for only about 

 half the width of the webs (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 down the side of the neck, and the lower breast 

 and abdomen are silky white. 



393. PODIOEPS GULARIS J. Gd. 



Black-throated Little Grebe. 



a. ? New Holland Grebe (1) Lath., Gen. Hist. 1826, X, 33. 



b. ?Podiceps novae-hoUandiae (1) StepL, Gen. Zool. XHI, 18 (1826); (2) Briigg., AMi. 



Ver. Bremen 1876, V, 99; (3) Legge, B. Ceylon 1880, 1060; (4) Bams., Tab. 

 List 1888, 22; (5) Cox & Hamil, Pr. L. Soc. N. S. W. 1889, 422; (6) North, 

 Nests & Eggs B. Austr. 1889, 348. 

 Podiceps gularis (1) Gould, P. Z. S. 1836, 145; (2) Gray, List B. Br. Mus. 1848, pt. m, 

 Anseres, etc., 151; (III) Gould, B. Austr. 1848, VH, pi. 81; (IV) Bchb., Nat. 1848, 

 t. Vm (Spl. ni), figs. 758—59; (5) Gld., Hb. B. Austr. 1865, H, 513; (6) Salvad., 

 Orn. Pap. 1882, m, 469; (7) Rams., Pr. L. Soc. N. S. W. 1887, 173; (8) Salvad., 

 Orn. Pap. Agg. 1891, 213; (9) M. & Wg., Abh. 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, VLH, 105. 



d. Podiceps tricolor (nee Gray); (1) Vord., N. T. Ned. Ind. 1882, XLII, 119; (2) id., ib. 



1SS4, XLIV, 205; ? (3) id., ib. 1886, XL VI, 222, ? (4) Everett, J. Str. Br. R. A. S. 

 1889, 212; (5) M. & Wg., J. f. O. 1894, 253. 



e. Tachybates gularis (1) Madarasz, Aquila 1894, 106. 

 "Tenggoka". Kabruang, Talaut, Nat. Coll. 

 "Bararang woki", Great Sangi, iid. 



For further synonymy and references cf. Salvador! G. 



Figures and descriptions. Gould III, 5; Reichenbach IV\ Salvadori G\ Vorderm. 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 brown 

 on exposed parts of the outer webs; cheeks, ear-coverts, chin, and upjier 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 tiic throat; rest of neck and throat brown, duslder with the haiiy tips 



