BIRDS OF NORTH AND MIDDLE AMERICA. 123 



Adult female. —Length (skins), 215-238.5 (228.3) ; wing, 129.5-138 

 (133.5); tail, 92.5-103 (98.4); exposed culmen, 20-24 (21.8); tarsus, 

 30-34 (32.2) ; middle toe, 21-24 (22.7). « 



Highlands of Costa Rica (San Jose; Volcan de Irazii; Volcan de 

 Turrialba; Volcan de Poas; Navarro; Dota; El Zarcero; Barranca; 

 LaPalma; Cervantes; Grecia; Coliblanco) and Panama (Boquete). 



T)irdiis plebejus Cabanis, Journ. fiir Orn., viii, Sept., 1860 (pub. Jan., LS61), .32.3 



(Costa Rica; coll. Berlin Mus.) 

 T[iirdus] plebejus Frantzii\s, Journ. fiir Orn.. 1 8(19, 290 ( Grecia and Cervantes, 



Costa Rica). 

 [Tuirbis] plebejus Gray, Hand-list, i, 1869, 258, no. 3754. 

 Tardus plebeius Sclater, Cat. Am. Birds, 1862, 358 (Costa Rica). — Lawrence, 



Ann. Lye. N. Y., ix, 1868, 91 (Dota, San Jose, and La Palma, Costa Rica). — 



Boucard, Proc. Zool. See. Lond., 1878, 50 (Navarro, Costa Rica). — Salvin 



and GoDMAN, Biol. Centr.-Am., Aves, i, 1879, 17 (Volcan de Irazu, etc., Costa 



Rica).— Seebohm, Cat. Birds Brit. Mus., v, 1881, 215. 

 [Turdus] plebeius Sclater and Salvin, Nona. Av. Neotr., 1873, 2. 

 Merula plebeia Ridgway, Proc. U. S. Nat. Mus., v, Feb. 28, 1883, 494 (Volcan de 



Irazu, Costa Rica). 

 [Merula] plebeia Sharpe, Hand-list, iv, 1903, 124. 

 Merula plebejus Bangs, Proc. New Engl. Zool. Club, iii, 1902, 49 (Boquete, Chiri- 



qui, 4,000 to 7,000 ft.; crit.). 



PLANESTICUS DIFFERENS (Nelson). 

 CHIAPAS THRUSH. 



Similar to P. plebejus, but larger, coloration much browner and 

 throat practically unstreaked and concolor with chest. 



Adult male. — Pileum and hindneck warm-sepia brown, the remain- 

 ing upper parts similar but brighter and more olivaceous; beneath 

 plain olivaceous broccoli brown, very slightly paler on chin and 

 throat, deeper and inclining to raw-umber brown on sides, flanks, and 

 under tail-coverts, the last margined with pale brownish buff; feathers 

 of under parts in general with barely discernible narrow shaft-streaks 

 of darker brown (only seen in certain lights) ; axillars and under wing- 

 coverts cinnamomeous wood brown, the color brighter on margins of 

 the feathers; bill brownish black; legs and feet dark brown (in dried 

 skins); length (skins), 247-253 (250); wing, 135-141.5 (138.2); tail, 

 103-105 (104); exposed culmen, 23; tarsus, 34; middle toe, 22-23 

 (22.5V'' 



Highlands of Chiapas (Pinabete), southern Mexico. 



Merula plebeius (not Turdus plebejus Cabanis) Nelson, Auk, xv, 1S98, 161 (Pina- 

 bete, Chiapas). 



Merula plebeia differens Nelson, Proc. Biol.. Soc. Wash., xiv, Sept. 25, 1901, 175 

 (Pinabete, Chiapas; coll. U. S. Nat. Mus.). 



[Merula] differens Sharpe, Hand-list, iv, 1903, 124. 



« Ten specimens. b Two specimens. 



