180 DENDROCOLAPTIDtE. 



Temascaltepec in the tableland of Mexico ^. The description is very imperfect, but we 

 think certainly refers to the bird subsequently described by Lesson as Bryocopus 

 ehurneirostris ^^. The latter title, however, has been more frequently employed than 

 the former, partly from the brevity of Swainson's description, partly from the hybrid 

 formation of his name. 



2. Dendrornis nana. 



Dendrornis guttatus, Cassin, Pr. Ac. Phil. 1860, p. 193 'j Lawr. Ann. Lye. N. Y. vii. p. 292 (nee 



Licht.) \ 

 Dendrornis nana, Lawr. Ibis, 1863, p. 181 '; Ann. Lye. N. Y. viii. p. 4*; Sol. & Salv. P. Z. S. 



1864, p. 355 ' ; 1870, p. 837 " ; Salv. P. Z. S. 1870, p. 193 ^ ; Elliot, Auk, vii. p. 174 '. 

 Dendrornis pardahtus, Lawr. Ann. Lye. N. Y. viii. pp. 4 °, 181 "; ix. p. 107 " j Frantz. J. f. Orn. 



1869, p. 305 ". 

 Dendrornis susurrans, Scl. & Salv. P. Z. S. 1870, p. 839"; Boucard, P. Z. S. 1878, p. 60 ". 

 Dendrornis lawrencii, Eidgw. Pr. U. S. Nat. Mus. x. p. 509 ". 

 Dendrornis lawrencii costaricensis, Ridgw. Pr. U. S. Nat. Mus. x. pp. 510 ", 589". 



B. ehumehvHro afSnis sed minor, rostro minore, maxilla nigricante, mandibula quoque interdnm nigra, striis 

 dorsalibns paucis et angustioribus : subtus magis rufeacens, abdomine et tectricibus subcaudalibus vix 

 striatis. Long, tota 9'0, alse 4'1, caudse 3-4, rostri a riotu I'S, tarsi 0-9. (Descr. maris ex San Pablo, 

 Panama. Mus. nostr.) 



Hai. Honduras, Medina (G. M. Whitely^^), Segovia River (Townsend^'') ; Costa Eica^^, 

 Angostura, Tucurriqui ^^ (Carmiol), San Carlos (Boucard ^^) ; Panama, Bugaba, 

 Calovevora (ArcS''), Lion Hill (M'Leannan^^^^^), San Pablo Station (0. S.), 

 near Panama city (A. IT. MarTcham). 



The differences distinguishing this bird from B. susurrans of the island of Tobago 

 and the northern portion of the continent of South America are very slight, and 

 perhaps hardly of specific value, consisting as they do in the rather deeper tint of the 

 fawn-coloured markings of the untJer surface and the more elongated stripes of the 

 abdomen of the Central-American bird. A good -d«al of variation exists in individuals 

 of both forms, but on the whole they seem to conform to th«se points of distinction. 

 We confess at the same time that we are straining a point in admitting B. nana to be 

 different from B. susurrans, and we do so with much hesitation. Mr. Sclater places 

 the two birds under B. susurrans, while Mr. Elliot keeps them distinct, considering 

 B. nana to be easily recognizable, which may be the case in the series examined by 

 him, but is not so in ours. 



The range of B. nana has been traced to the north coast of Honduras ^^, and thence 

 southwards through Nicaragua, Costa Rica, and the State of Panama. All southern 

 birds beyond this seem to be referable to B. susurrans. 



From B. pardalotus this species may be distinguished by its stouter bill • the 

 markings of the breast, too, are less definite, the margins to the central stripes being 

 not so black. 



