CAMPTLOEHTNCHIIS. 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 Mimosse 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. Campylorhyuchus hnmills. 



Campylorhynchus humilis, Scl. Pr. Ac. Phil. 1856, p. 263^; Baird, Rev. Am. B. i. p. 107°; 

 Sumiclirast, Mem. Bost. Soc. N. H. i. p. 545'; Lawr. Mem. Bost. Soc. N. H. ii. p. 267*; 

 Btdl. U.S. Nat. Mus. no. 4, p. 13 \ 



G. capistrato similis, sed minor, capite toto siimmo rufescente nee nigro et siaia rietali utrfaque nigra distin- 

 guendus. Long, tota 6-0, alse 2-6, caudse 2-3, rostri a rictu 0"9, tarsi 0"8. (Descr. maris ex Tehuan- 

 tepeqne. Mus. nostr.) 



Hab. Mexico, Mazatlan (Bell ^ ^), Colima {Xantus ^ % San Juan del Rio (HSiouch), 

 Juchitan (Sumichrast ^), Santa Efigenia and Tehuantepec city (Sumichrast ^). 



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 2. 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. CENTE.-AMEE., Zool., Avcs, VoI. 1, Feb. 1880. 



