20 BULLETIN 50, UNITED STATES NATIONAL MUSEUM. 



c. Back, etc., brownish slate-gray; chin and throat whitish; white of abdomen 

 more extended. (Central Colombia.) 



Catharus fuscater fuscater (extralimital)^" 

 cc. Back, etc., deep blackish slate or slate-black: chin and throat gray, not very, 

 if at all, different from color of chest; white of abdomen more restricted. 

 d. Gray of throat quite uniform with that of chest; under tail-coverts clear 

 slate-gray or mouse gray, like color of sides and flanks. (Santa Marta dis- 

 trict of Colombia.) Catharus fuscater sanctae-martse (extralimital) b 



dd. Gray of throat obviously paler and duller than that of chest; under tail- 

 coverts dull brownish buff or wood l^rownish. (Costa Rica and n. Panama.) 



Catharus fuscater hellmayri (p. 24) 

 aa. Pileum brownish or grayish. 



h. Pileum brown, either concolor with back or more rufescent. 

 c. Pileum more rufescent than color of back, the latter not distinctly or at least 

 not conspicuously less rufescent than upper tail-coverts and tail. 

 d. Inner webs of remiges becoming buffy toward base. {Catharus occidentalis.) 

 e. Upper parts distinctly brown or russet. 

 /. Brighter russet-brown above, the pileum russet; sides and flanks 

 lirowner. (Southeastern Mexico.) 



Catharus occidentalis occidentalis (p. 26) 

 ff. Duller brown above, the pileum more tawny-olive; sides and flanks 

 more grayish. (Southwestern Mexico.) 



Catharus occidentalis fulvescens (p. 27) 

 ee. Upper parts grayish olive; the pileum between hair brown and isabella 

 color. (Northwestern Mexico.). .Catharus occidentalis olivascens (p. 27) 

 dd. Inner webs of remiges not buffy basally. {Catharus frantzii.) 



e. Under parts paler, the lower throat and upper chest distinctly spotted 

 with deep smoke grayish (as in C. occidentalis); throat dull white, and 

 al)domen extensively white. (Southwestern Mexico.) 



Catharus frantzii omiltemensis (p. 29) 



ee. Under parts darker, the lower throat and chest not distinctly, if at all, 



spotted; throat grayish, abdomen not extensively whitish. 



/. Back, scapulars, etc., more olive-brown, the pileum russet-brown or raw 



umber; chest less strongly tinged with brown. (Highlands of Chiapas 



and Guatemala.) Catharus frantzii alticola (p. 29) 



ff. Back, scapulars, etc., russet-brown, the pileum russet; chest strongly 

 tinged with brown. (Highlands of Costa Rica.) 



Cartharus frantzii frantzii (p. 28) 



cc. Pileum concolor with back, the upper tail-coverts and tail (sometimes wings 



also) decidedly more rufescent. {Catharus melpomene.) 



d. Larger (wing averaging more than 82, tail more than 67, in adult male). 



e. More russet-brown above; gray of chest and sides averaging deeper and 



duller. (.Southeastern Mexico.). . .Catharus melpomene melpomene (p. 29) 



a M.[yioturdu^] fuscater Lafresnaye, Rev. Zool., viii, Sept., 1845, 341 (Bogota, 

 Colombia; type in coll. Lafresnaye, now in coll. Boston Soc. Nat. Hist.). Catharus 

 fuscater Sclater, Proc. Zool. Soc. Lond., 1859, 324, part (int. Colombia). C[atharus] 

 /[»sea/.f;]/»sca«fr Berlepsch, Orn. Monatsber., x, 1902, 71 (crit.). 



b Catharus fuscater (not Myioturdus fuscater Lafresnaye) Bangs, Proc. Biol. Soc. 

 Wash., xiii, 1899, 108 (Cliirua, Santa Maita; fresh colors of soft parts); Allen, Bull. Am. 

 Mus. N. IL, xiii, 1900, 183 (El Libano, Santa Marta; crit.).— Catharus fuscater sanclx- 

 inartiv Ridgway, Smithson. Misc. Col. (quart, issue), xlvii, Aug. G, 1904, 112 (EA Li- 

 bano, Santa Marta, Colombia; coll. Carnegie Mus.). 



