/A 



than those of our common Dabchiclc {S>jIhcJc>/clus minor)^ and can hardly, we should thhik, he 

 available for flight. The second and third primaries slightly exceed the first in length, and are 

 the longest in the wing. 



The tarsus of this Grebe is considerably shorter than the middle toe without the nail. A s 

 in all species of the genus, it is excessively compi-essed, and terminates posteriorly in a double 

 series of scales, which, however, are much more prominent than in any other Grebe we are 

 acquainted with, so as to constitute two rows of projecting spines which run up the back of the 

 tarsus, and are particularly well developed at the proximal extremity. This otriking peculiarity y 



has induced us to bestow upon the bird the generic name Centropelma* A somew hat similar 



formation occurs in the common Dabchick, but does not attain {tohearl W' the same degree of 5^^ 

 development. 



Our figure of the Grebe is taken from the same specimen as that described by Mr. Gould, 

 which is now in Salvin and Goo(dman's collection. The only other individual we have met with, 

 which is in the Gallery of the British Museum, was also obtained by Mr. Forbes on Jjake Titicaca. 

 The species is, in all probability, exclusively confined to this enormous Alpine lake, which is 

 .situated among the Bolivian and Peruvian Andes at an elevation of upwards of 12,800 feet 

 above the level of the sea. 



Mr. Coues has lately published a synopsis of the North American Podicissince.'\ The South 

 American species of this group with which we are acquainted are, besides the present, only 

 four: namely — 



1. PODIOKPS MAJOR. 



Grebe de Cayenne, Buff. PL Enl. 404, f. i. (unde), Colymhus major, Bodd. : Colymbtts cayennensis, Gm. S. N. i. 

 p. 593 — Mucas corntido, Azara, Apunt. iii. p. 457, No. 443 : Podkeps bicornis, Licht. Doubl. p. 88 : Harttl. 

 Ind. Az. p. 28 : Burm. La Platz-Eeim ii. p. 520 : "\Podicep.t ameiicanns," Garnot, Mus. Paris : Podiceps -f" 



chilensis, Garnot, Zool. Voy. Coq. i. p. 'iOl : DarwiD. Zool. Voy. Btagle, iii. p. 137 : Podiceps leucopterus. 

 King, Zool. Journ. ii. p. 101 : Jard. et Selb. 111. Orn t. 107 : Hartl. Nuum. 1853, p. 218 : Podiceps albicoJlis, 

 Sess. Trait, p. 598. 



Hob. Cayenne (BiiJT-) '■ Brazil, llio Grande (Mus. Paris): Monte Video (Mus. Berol.) : Paraguay (Azara): 

 Magellan's Straits (King) : Chili (Garnot). 



2. Podiceps calipae^us. 



Podiceps calipareus. Less. Vov. Coq. Zool. p. 727, t. 45. Darwin, Zool. Beagle, iii. p. 136 : Hartl. Naum. 1553, 

 p. 218 : Tsih. P. P. Aves, p. 315 : Scl. P.Z.8. i860, p. 3J<9: Abbott, Ibis, 1862, p. 152 : Scl. et Salv. P.Z.S. " 

 1869, p. 158. '. 



Hab. Chili: Bolivia, Potosi, (d'Orb.) coasts of Southern Peru (Tschudi) : Interior of Peru, Tiata (Whitely) : 

 Falkland Isl. {Abbott) : Patagonia (Darwin). 



S. Podiceps eollanbi. 



Podiceps rollatidi, Q. et G. Voy. TJranie, Zool. p. 133, t. 36: Darwin, Voy. Beagle iii. p. 137; Hartl. K"aum. 



1853, p. 218: Scl. P.Z.S. 1860, p. 389 : Abbott, Ibis, 1861, p. 162 : Scl. et Salv. P.Z.S. 1868, p. 146 ; et 



18(J9, p. 158. ' ' 



Hah. 'Ea\k[a,\\(ilii\&nAs(I>arwin, Abbott) : Argentine Eep. (ifi^t/soK) : ChWi (Hartlauh) : Int. oiVeTM. (Whitely). 



' 4. Stlbeoctclus dominicus. 



Colymhus dominicus, Linn. S. N. i. p. 203. Max. Beitr. iv. p. 835 : Spix Av. Bras. ii. p. t. 101. Macas. , 

 menor, Azara, Ap. iii. p. 467, No. 445 : Podiceps dominicus, Hartl. Ind. Az. p. 28. Licht. Doubl. p. 87, 

 Podiceps dominicus, Gosse, Birds of Jam. p. 4i0: Scl. P.Z.S. 1857, p. 207, 18.39, p. 369 : SalleP.Z.S. 1857, 

 p. 237: Cab. in Scliomb. Guian. iii. p. 765. Scl. et Salv. Ibis, 1860, p. 278: Taylor, Ibis, 186q, p. 317 ; 

 Lawr. Ann. Lvc. N. Y. vii. p. 334: Scl. et Salv. P.Z.S. 1864, p. 373: Gundlact, Kep. P. N. i. p. 386. 

 Sylbeocyclus dominicus, Cciue-', Pr. Ac. Phil. 1862, p. 232. 



Sab. Mex\(;o[Sal/e) : Caha { Guudl.) -. Jamaica (Cros«e) : Sin Domingo (&//«) : Guatemala (/SaZyjn) : Honduras 

 (Taylor): Veragua (^rc<?) : Panama (McLeannan) : Caraccaa (Levraud) : 'BrsizW (Spix, Max.) : Paraguay 

 (Azara). 



* Kltrpov spina et jriXfia plaita pedis. f Proc. Acad. Sc. Phil. 1862, p. 226, et p. 404. 



Mat, 1869. 



[193] 



