THRYOPHILUS. 87 
transmitted by Mr. Skinner to Mr. Gould from Guatemala. In our description of this 
specimen its origin is put down as Vera Paz; but we now think that it more probably 
came from that part of Guatemala which borders the Pacific Ocean. We have, 
however, never seen a second Guatemalan example; and our surmise as to the 
origin of the type is derived from the fact that neither in Mexico nor in more southern 
countries has the species ever been found far from the Pacific, it having been fre- 
quently met with on the shores of that ocean. 
In Mexico, 7. pleurostictus, though never observed in the eastern parts of the 
country, nor yet in Oaxaca, was obtained near San Juan del Rio by M. Rébouch in 
some numbers”; and at Tehuantepec it would appear to be by no means uncommon *. 
Prof. Sumichrast, who describes its habits, speaks of its activity and tameness. Its nest, 
he says, is made of the fine stems of dry grasses, which are woven into the shape of a 
retort, and lined with hair and the seeds of a Bombax. ‘This structure is placed in a 
bush, or in the fork of two branches. The eggs, three to five in number, are of a beau- 
tiful greenish-blue colour. It first came under our observation near La Union, when 
descending the volcano of Conchagua. A pair were then observed in the brushwood 
skirting the town of La Union. It was afterwards seen at San Juan del Sur in Nicaragua, 
in the thin scrub on the shores of the bay. Other Nicaraguan examples examined by 
us were in the possession of General Baxter, at one time American Minister to Central 
America, who obtained them near the port of Corinto. The Costa-Rican specimens in 
our possession were obtained by Arcé on the shores of the Gulf of Nicoya, and are 
those alluded to by Mr. Lawrence in his list of Costa-Rican birds®. 
8. Thryophilus nisorius. 
Troglodytes nisorius, Licht. Mus. Berol. et Nomencl. p. 34° (descr. nulla). 
Thryothorus nisorius, Scl. P.Z. 8S. 1869, p. 591, t. 45 *, 
Supra lete rufus, alis caudaque nigro regulariter transfasciatis, superciliis elongatis albis, capitis lateribus 
albis nigro variegatis; subtus albus nigro ubique transfasciatus, tectricibus subalaribus albo nigroque 
variegatis ; rostro et pedibus corneis. Long. tota 5:5, ale 2°7, caude 2°2, tarsi 0°85. (Descr. Sclateriana 
exempl. ex Real Ariba, Mexico. Mus. Berol.) 
Hab. Mexico, Real Ariba (Deppe ! 2). 
This Wren is a near ally of 7. pleurostictus, from which it mainly differs in having 
the under surface barred throughout with black, instead of only on the flanks and 
crissum as in its near relative. This difference, though sufficiently apparent in the 
type, is not great; and an examination of a larger series of specimens may prove that 
the two species are not really separable. At present the single example obtained by 
Deppe, and now in the Berlin Museum, is the only one we have met with. This stood 
for many years under an unpublished name of Lichtenstein’s, until Mr. Sclater described 
and figured it in 1869. 
