Carriker : List of the Birds of Costa Rica. 417 



numerous about Guacimo and Guapiles, flying about the pastures, barn- 

 yards, and banana-plantations. 



63. ^Egialitis semipalmata (Bonaparte). 



Charadrius semipalmatus Bonaparte, Obs. Wilson, 1825, no. 219. — Frantzius, 



Jour, fiir Orn., 1 869, 378 (C. R.) 86. 

 /Egialeus semipalmatus Sharpe, Cat. Birds Brit. Mus., XXIV, 1896, 250. — 



Sai.vin and Godman, Biol. Centr.-Am., Aves, III, 1903, 357 (Bahia de 



Salinas [Underwood in lilt.']). — Bangs, Auk, 1907, 291 (Puntarenas, Aug. 



20 [Underwood]). 

 sEgialitis semipalmatus Cherrie, Expl. Zool. en C. R., 1891-2, 1893, 55 (Rio 



Grande de Terraba). 



Bangs Collection : Herradura de Puntarenas (Underwood). 

 Carnegie Museum : Coronado de Terraba, July 3 (Carriker). Two 



skins. 



Evidently confined to the Pacific coast. A few remain during the 

 summer, for what reason is not clear, except that they may be sick or 

 not properly developed sexually. Mr. Cherrie found them during the 

 summer along the lower Rio Grande River, as did Mr. Underwood 

 and myself. This region of mud-flats (at low tide) seems to be a 

 favorite wintering-ground for them. 



64. jEgialitis collaris (Vieillot). 



Charadrius collaris V 'IEILLOT, N. Diet. d'Hist. Nat., XXVII, 1817, 136. 



SEgialitis collaris Richmond, Proc. U. S. Nat. Mus., XVI, 1893, 526 (Rio Frio, 

 one specimen). —Sharpe, Cat. Birds Brit. Mus , XXIV, 1896, 288. — Sal- 

 vin and Godman, Biol. Centr.-Am., Aves, III, 1903, 359 (Richmond's 

 record). — Bangs, Auk, 1907, 291 (El Pozo de Terraba, Barranca de Punta- 

 renas, Herradura de Puntarenas (Underwood). 



Carnegie Museum: Cuabre, March 10, 1904, Rio Sicsola, Aug. 17, 



1904 (Carriker). Two skins. 



This little South American plover seems to be scattered sparingly 

 along the Caribbean coast and along the rivers up to an altitude of 

 nearly 1,000 feet. I have never seen it in any numbers, only one or 

 two at one place. 



65. Himantopus mexicanus (P. L. S. Miiller). 



Charadrius mexicanus, P. L. S. Muller, Syst. Nat. Anhang. , 1776, 117. 



Himantopus mexicanus Wagler, Isis, 1831, 520. — Zeledon, An. Mus. Nac. de 

 C. R., I, 1887, 130 (Las Trojas). — Richmond, Proc. U. S. Nat. Mus., XVI, 

 1893, 526 (Rio Frio, small flock Feb. 29). — Sharpe, Cat. Birds Brit. Mus., 

 XXIV, 1896, 320. — Salvin and Godman, Biol. Centr.-Am., Aves, III, 

 1903, 361 (references above cited). 



