TEOGLODTTID^. 63 



resemblance, but showing some diversity in colour. Two genera have usually been 

 admitted under the names given above ; but the characters dividing them are very 

 slight, and some species have been placed first in one genus and then in the other. 

 The formation of the nostril is the chief character by which they have been sought to 

 be distinguished; but this proves to be not very trustworthy, such species as C.jocosus 

 forming a connecting link between the two. 



With the exception of one species found all along the southern frontier of the 

 United States, and another in the promontory of Lower California, all the species 

 belong to the Neotropical Kegion, Mexico and Central America being the metropolis 

 of the genus, where no less than half its members are found. In South America 

 Campylorhynchus ranges over nearly the whole country as far south as Bolivia ; but 

 none of the species are specifically the same as those of Central America. 



The various species are usually somewhat gregarious in their habits, as many as ten 

 or twelve individuals being often found together, except during the breeding-season. 

 Though C. hrunneicapillus is credited with a powerful song, our experience of these 

 birds is that their notes are harsh, and that their song, if such it may be called, is 

 far inferior to that of many Troglodytidse. 



A. Heleodttes. 



Nares apertoe suhrottmdatae ; pileus fere unicolor. 



a. Nares apertce, fere rotundce ; nucha haud striata. 



1. Campylorhynchus albibrunneus. 



Heleodytes albobrunneus, Lawr. Ibis, 1862, p. 10 ^ ; Ann. Lye. N. Y. vii. p. 470 ^ ; Scl. & Salv. 



P. Z. S. 1864, p. 344 \ 

 Campylorhynchus albibrunneus, Baird, Rev. Am. B. i. p. 98 *. 



Brunneus, oapite toto, cervice et corpore subtus cum teetricibus subalaribus pure albis, erisso brunneo subob- 

 solete transfasciato ; rostro et pedibus obscure brunueis. Long, tota 7'3, alae 3"3, caudse 3"1, rostri a 

 rictu I'l, tarsi 1-05. (Descr. maris ex San Pablo, Panama. Mus. nostr.) 



Eah. Panama, Veraguas (-4rc^), Frijole* and Lion-Hill Stations {M'Leannan^'^),^?ia.- 

 Pablo Station {0. 8.^). 



This peculiar species has a very restricted range, all the specimens (with one exception) 

 that we have seen having been obtained at some one of the stations on the Panama 

 railway. It goes a little further into the Isthmus, having been sent from the neigh- 

 bourhood of Veraguas by Arce. 



Mr. Lawrence first described it in ' The Ibis ' from specimens sent him by M'Leannan i, 

 and afterwards included it in one of his lists of Panama birds ^. When crossing the 

 Isthmus in 1863, Salvin shot a bird of this species in some low trees near the railway 

 at San-Pablo Station. It was seen climbing about the outer branches of a tree 

 with the restless habits of a true Campylopterus ^. 



