66 PROCEEDINGS OF THE NATIONAL MUSEUM VOL. 95 
from the trail above Las Delicias but did not find them at the Ha- 
cienda Santa Maria. 
THRYOPHILUS MODESTUS MODESTUS (Cabanis) 
Thryothorus modestus CaBANIS, Journ. fiir Orn., 1860 (May 30, 1861), p. 409 
(San José, Costa Rica). 
On November 15 I collected three of these interesting wrens at 
the Hacienda Santa Maria, an adult female and two immature 
birds, all in rather ragged condition due to partial molt. They 
ranged in tangled growth in the thickets and groves scattered through 
the pastures below the house and did not enter the forest. The 
chattering note is suggestive of that of Thryophilus pleurostictus 
ravus that I found common at Liberia. The song also is similar, but 
was not so loud or so clear in tone. 
THRYOPHILUS PLEUROSTICTUS RAVUS Ridgway 
Thryophilus pleurostictus ravus Ripe@way, Proc. Biol. Soc. Washington, vol. 16, 
Nov. 30, 1903, p. 167 (San Juan del Sur, Nicaragua). 
This wren, like others of its kind called the salta espinuela, was 
common in the vicinity of Liberia in thickets or in undergrowth 
along the trails in heavy woodland. The song, heard frequently, is 
clear and musical, suggestive of that of related species. The call 
note is a chipping sound that to ears attuned to northern bird calls 
suggests a warbler or a sparrow rather than a wren. The birds 
at this season were in partial or complete molt. Specimens 
were secured on October 19, 24, and 25 and November 18. 
In the color of the dorsal surface this series is uniformly duller, 
less reddish brown than birds from western Nicaragua, including 
specimens from the type locality. Apparently the difference is due 
to their condition of fresh, newly grown feathering, since San Juan 
del Sur, the type locality in Nicaragua, is not far away. 
THRYOPHILUS THORACICUS (Salvin) 
Thryothorus thoracicus SALVIN, Proc. Zool. Soc. London, 1864 (Feb. 1865), p. 580 
(Tucurrique, Costa Rica). 
These wrens were found about deadfalls in heavy forest, mainly in 
the region of Los Cuadros on the Hacienda Santa Maria. ‘Their 
clear songs were heard frequently, but the birds were secretive and 
because of their dull colors were difficult to see in the dim light of 
these woodlands. One was shot on November 6. 
Hellmayr® includes Thryophilus leucopogon of Salvadori and Festa 
as a geographic race of thoracicus on the basis that the juvenile thora- 
cicus has only indistinct streaking on the lower surface. In view of 
the distinctness of the color pattern of the adults, thoracicus being 
15 Publ. Field Mus. Nat. Hist., zool. ser., vol. 13, pt. 7, Nov. 15, 1934, pp. 175-176. 
