84 TROGLODYTIDZ. 
Supra obscure brunneus, pileo paulo cinerascentiore, alis caudaque rufescentioribus ; cauda nigro transfasciata, 
alis obsolete transfasciatis ; capitis lateribus albis nigro variegatis ; superciliis elongatis, gutture et ventre 
medio albis ; hypochondriis, ventre imo et crisso rufescentibus ; rostro et pedibus plumbeis. Long. tota 5-2, 
ale 2-4, caude 2-2, rostri a rictu 0°9, tarsi 1:1. (Descr. exempl. ex San José, Costa Rica. Mus. nostr.) 
Hab. Guaremana, Volcan de Fuego, Duefias’, Savana Grande, Escuintla’?’, Retal- 
huleu, Coban® (0. 8. é F. D. G.); Honpuras, San Pedro (G. IM. Whitely*); 
Costa Rica, San José, Quebrada Honda (Hoffimann'), San José (v. Frantzius' *), 
Guaitil (Carmiol’), San Mateo (Cooper®); Panama, Bugaba (Arcé®), line of 
railway (M‘Leannan??"), 
Costa Rica furnished Dr. Cabanis with the types of this species, the range of which 
has since been traced to Guatemala in the north and to Panama in the south. Guate- 
malan examples agree very closely with the Costa-Rica bird; but those from the 
Isthmus are decidedly paler beneath, especially on the flanks, which are hardly tinged 
with the rufous so conspicuous in the Costa-Rican form—a point already noticed by 
Prof. Baird’. Except as regards size, the Panama bird approaches closely to 7. zeledoni, 
the form of 7. modestus found in the lowlands of the Atlantic side of the mountains of 
Costa Rica. 
In Guatemala this Wren inhabits nearly the same districts as 7. rufalbus, ranging 
from an elevation of 1000 to 5000 or 6000 feet. It is also distributed over a wide 
tract of country. It is, however, not quite so common a bird as 7. rufalbus, nor are 
its notes so melodious. 
After its first discovery in Central America, by Dr. Hoffmann in Costa Rica and by 
ourselves almost at the same time in Guatemala, it was several years before 7. modestus 
came into quiet possession of its name. Our Guatemala birds were at first doubtfully 
referred to Thryothorus felix , and afterwards to T. albipectus *; and M‘Leannan’s 
examples from Panama were put under the name of 7. lewcotis 4. An examination of 
all these specimens, in Mr. Lawrence’s, Mr. Sclater’s, and our own collections, has 
enabled us to determine that they all belong to 7. modestus. 
4. Thryophilus zeledoni. 
Thryophilus zeledoni, Ridgw. Pr. U.S. Nat. Mus. i. p. 252 * (ex Lawrence, MS.). 
7’. modesto similis sed major, colore omnino grisescentiore et fasciis caude nigris latioribus et distinctioribus 
distinguendns. Long. tota 5-4, ale 2°5, caude 2:1, rostri a rictu 0°95, tarsi 1:0. (Descr. maris ex 
Costa Rica. U.S. Nat. Mus. no. 64689.) . 
Hab. Costa Rica, lowlands bordering the Atlantic (J. Zeledon), 
We are indebted to Mr. Ridgway’s kindness for the loan of the only specimen of this 
Wren that has as yet come under our notice. The species is considered by its describer 
a well marked one, and allied to 7. modestus, whose place it would appear to occupy 
in the low-lying lands bordering the Atlantic coast of Costa Rica, 7. modestus being 
