PODILYMBUS., 445 
Podilymbus podicipes, Grant, Cat. Birds Brit. Mus. xxvi. p. 553°; Oates, Cat. Eggs Brit. Mus. i. 
p. 188%, 
Podilymbus sp., Salv. Ibis, 1866, p. 200”. 
Podilymbus antarcticus, Hart]. Naum. 1853, p. 218"; Scl. P.Z. S. 1867, p. 387; Scl. & Salv. 
_P.Z.S. 1868, p. 177, | 
Podilymbus carolinensis (Lath.), Moore, P. Z. S. 1859, p. 65, 
Ptil. estiv. Supra saturate brunneus, pileo nuchaque nigricantibus; facie laterali saturate brunnea ; collo 
undique clariore brunneo; gutture toto nigro, lateraliter albo notato; corpore reliquo subtus saturate 
brunneo, vix nigricante, plumis singulis argentescenti-albo fimbriatis, pectore medio albo; remigibus 
brunneis, intus cinerascenti-brunneis, secundariis apices versus albidis: rostro lacteo, fascia transversa 
mediana nigra; tarso et digitis virescenti-schistaceis, intus plumbeis; iride lete brunnea, annulo 
filamentoso interiore pure albo, annulo angusto exteriore ochrascenti-albo. Long. tota circa 14:0, ale 5-4, 
culm. 0-9, tarsi 1:65. (Descr. maris adulti ex Atitlan, Mus. nostr.) 
mari similis, sed minor. _ 
Piil. hiem. ptilosi estive similis, sed gutture albo, corpore subtus albidiore, preepectore et corporis lateribus 
ochracescenti-rufo lavatis. 
Juv. adultis hiemalibus similis, sed brunnescentior, facie laterali et gutture nigro striolatim notatis, et rostro 
tenuiore distinguendus. (Spec. av. juv. ex Dueiias. Mus. nostr.) 
Hab. Norra America, from British Provinces southward 17M rxico 3, Matamoros 
(Dresser®), Valley of Mexico (Sumichrast', Herrera 415), Guanajuato, Guadalajara 
(Duges"), Manzanilla Bay (Xantus!), Laguna de Chapulco, Puebla (Ferrari- 
Perez 18), Schkolak, Yucatan (Stone & Baker 6); GuateMALA (Constancia °), Lake 
of Peten (Leyland **), Lake of Atitlan (O. 8.1820, Richardson 18), Duefias (0. 8. 
& F. D. G41); Panama, Castillo (Arcé § 18),—Sourn America to Southern Brazil 
and Chile 18 22, Peru 23, 
The Pied-billed Grebe is found in North America, from the British Provinces 
southward, breeding nearly throughout its range”, In winter it occurs in most ‘of 
the Central-American countries, and southward to Brazil and Chile 18. 
The species also breeds in our region, for Herrera records that it is resident in the 
Valley of Mexico 4, Specimens procured both by us and Mr. Richardson on the Lake 
of Atitlan are very large, and have more black on the head and back of the neck, 
while the sides of the face are blackish-brown, with the black colour on the throat 
extending further down towards the front of the neck. Mr. Grant, who has carefully 
studied the question, and has tabulated the measurements of the large series in the 
British Museum, has come to the conclusion that the Atitlan birds are nearly 
approached in size and plumage by examples from other parts of America, and that 
the differences are due to age only, and in this we are inclined to agree with him. We 
found some nests, which were of considerable size, on the Lake of Duefias in May : 
they consisted of a pile of flags heaped up so as to raise the edge of the structure 
above the surface of the water, the eggs being half-immersed; the latter were from 
two to four in number, of a chalky exterior on an under surface of bluish-green. 
