Carriker : List of the Birds of Costa Rica. 617 



as only subspecifically distinct from M. exsul, but upon comparing a 

 large series of the two forms, the differences become so apparent and 

 constant, without signs of intergradation, that I believe it entitled to 

 specific rank. 



This form is confined to the Pacific lowlands and lower foothills of 

 the southwestern portion of Costa Rica (Gulf of Nicoya southward) 

 and Chiriqui. Its habits are essentially the same as those of M. exsul 

 of the eastern side. 



A single nest of this bird was found at Pozo Azul de Pirn's, May 10, 

 1902, containing two partly incubated eggs. Both nest and eggs are 

 very similar to those of M. exsul, except that the nest of this bird was 

 a little rougher, containing more twigs and roots, and was lined with 

 fine black roots. It was also placed near the ground in the thick 

 forest. The eggs are of about the same color, only a little paler, 

 nearly the whole surface being obscured with specks, blotches, and 

 scrawls of purplish-chestnut. Measurements: 23 x 17 and 24 x 17 

 mm. 



352. Myrmeciza laemostica Salvin. 



Myrmeciza Icemosticta Salvin, P. Z. S., 1864, 382 (Tucurriqui [Arce}). — Law- 

 rence, Ann. Lye. N. Y., IX, 1868, 109 (Tucurriqui [Aice]; coll. O. Salvin). 

 — Frantzius, Jour, fiir Orn., 1869, 305 (Costa Rica). — Sclater, Cat. Birds 

 Brit. Mus., XV, 1890, 280 (Costa Rica and Veragua). — Salvin and God- 

 man, Biol. Centr.-Am., Aves, II, 1892, 230 (Costa Rican references). — 

 Hellmayr, Nov. Zool., XIII, 1906, 342 (crit.). 



Drymophila Icemosticta Carriker, Ann. Carnegie Mus. V, i, 1908, 9 (crit.). 



Myrmeciza stictoptera Lawrence, Ann. Lye. N. Y., VIII, 1867, 132 (Angostura, 

 Costa Rica [Carmiol]) IX, 1868, 109 (Angostura [J. Carmiol]). — Frantzius, 

 Jour, fiir Orn., 1869, 305 (Costa Rica). — Salvin and Godman, Biol. Centr.- 

 Am., Aves, II, 1892, 230 (Costa Rican references). — Cherrie, Proc. U. S. 

 Nat. Mus., XIV, 532 (San Carlos [Alfaro]). — Hellmayr, Nov. Zool., XIII, 

 1906, 342 (crit.). 



Drymophila stictoptera Carriker, Ann. Carnegie Museum, V, i, 1908, 9 (crit,). 



U. S. Nat. Museum : San Carlos, two spcimens (Alfaro). 



Bangs Collection : Carrillo and La Vijagua (Underwood). Ten speci- 

 mens. 



C. H. Lankester Collection : La Florida. 



Carnegie Museum: Guapiles and Volcan de Turrialba, 2,000 feet 

 (Carriker and Crawford), Cuabre, Carrillo, Peralta (Carriker). Six 

 specimens. 

 Mr. Hellmayr was the first one to publish anything in regard to the 



real status of the Costa Rican species of Myrmeciza (Icemosticta and 



