CAMPYLORHYNCHUS. 65 
about 3000 feet, and descends to the sea-level. In Western Mexico its place is taken 
by C. humilis; but in Western Guatemala it is very abundant, and thence passes down 
the coast of the Pacific, through San Salvador, Honduras, and Nicaragua, to the Gulf 
of Nicoya in Costa Rica. On the eastern side it is found, as already stated, in Vera 
Cruz; it also occurs in the valley of the Motagua in Guatemala !°, and near San Pedro 
in Honduras °. 
Though found in the outskirts of forests, its favourite resort is the more open parts 
of the country where Mimose abound. In such a district we found it nesting in the 
neighbourhood of Chuacus, the nest being placed in a low tree. This nest was a large 
loose structure, rather elongated in shape, with the opening at the end of the longer 
axis. ‘The species is a restless noisy one, and has no song worthy of the name. 
3. Campylorhynchus humilis. 
Campylorhynchus humilis, Scl. Pr. Ac. Phil. 1856, p. 263°; Baird, Rev. Am. B. i. p. 107°; 
Sumichrast, Mem. Bost. Soc. N. H.i. p. 545°; Lawr. Mem. Bost. Soc. N. H. ii. p. 267°; 
Bull. U.S. Nat. Mus. no. 4, p. 13°. 
C. capistrato similis, sed minor, capite toto summo rufescente nec nigro et stria rictali utrinque nigra distin- 
guendus. Long. tota 6:0, ale 2°6, caude 2:3, rostri a rictu 0°9, tarsi 0°8. (Descr. maris ex Tehuan 
tepeque. Mus. nostr.) 
Hab. Mexico, Mazatlan (Bell+3), Colima (Xantus?+), San Juan del Rio (Rébouch), 
Juchitan (Sumichrast*), Santa Efigenia and Tehuantepec city (Suwmichrast*). 
This species is restricted in its range to Western Mexico, being found only in the 
States bordering the Pacific from Mazatlan to the Isthmus of Tehuantepec. It has 
been reported from Orizaba?, but incorrectly, as Prof. Sumichrast has shown’. The 
last-named naturalist states ° that it is the most common species of the genus on the 
shores of the Gulf of Tehuantepec, and is found as far as San Carlos on the road to 
Oaxaca. It is, he says, a lively bird, whose song at the time of mating is agreeable and 
varied. Except at this time, when it lives in pairs, it is almost always seen in small 
flocks. Campylorhynchus humilis was originally described by Mr. Sclater from a specimen 
in the collection of the Academy of Natural Sciences of Philadelphia, brought from 
Mazatlan by Mr. Bell +, whence other specimens have since been obtained and compared 
with the type by Prof. Baird?. In general appearance C. humilis is not unlike 
C. capistratus, but is quite distinct from it, as pointed out above. It seems, however, 
to take the place of that species in Western Mexico, the two never being found 
together. 
The iris of this species in life is described as of a bright brick-red colour, the bill 
blackish, and the basal half of the mandible and feet light plumbeous‘, 
BIOL. CENTR.-AMER., Zool., Aves, Vol. 1, Fed. 1880. 9 
