HENICOEHINA. 79 



an inch in length, separates Eenicorhina from Thryophilus, with which genus it might 

 be not improperly placed as a section. 



Only two species are now recognized of this species, both being found at different 

 altitudes over nearly the same area from Mexico southwards. E. leucosticta, however, 

 spreads eastwards into Guiana, and H. leucophrys southwards into Peru. The form is 

 absent from South-eastern BrazU. 



1. Heuicorhina leucosticta. 



CypJicrrhinua leucostietus, Cab. Arch. f. Natttrg. Jahrg. xiii. 1, p. 206'; Lawr. Ann. Lye. N. Y. vii. 



p. 320 ', ix. p. 92 ' ; Bull. U. S, Nat. Mus. no. 4, p. 13 *. 

 Microcerculus leucostietus, Scl. & Salv. P. Z. S. 1864, p. 345 '. 

 Thryothorus leucostietus, Salv. P. Z. S. 1867, p. 134°. 

 Heterorhina leucosticta, Baird, Rev. Am. B. i. p. 117'; Sumichrast, Mem. Boat. Soc. N. H. i. 



p. 545 ' (partim) . 

 Henicorhina leucosticta, Salv. P. Z. S. 1870, p. 181°. 

 Scytalopus prostheleueus, Scl. P.Z. S. 1856, p. 290". 

 Cyphorhinus prostheleueus, Scl. P. Z. S. 1858, pp. 63 ", 96 ", 1859, pp. 363 ", 372 " ; Scl. & Salv. 



Ibis, 1860, p. 397". 

 Heterorhina prostheleuca, Baird, Rev. Am, B. i. p. 116'*. 



Supra Tjnmnea, dorso postico rufesoente, superciliis elongatis albis, capitis lateribus albo nigroque variegatis, 

 tectricibiis alarum apicibus albo maculatis ; subtus alba lateribus cinereis, ventre imo et crisso castaneis ; 

 alls et Cauda fusco-nigris, extus rufescente brunneo transvittatie ; rostro nigro ; pedibus eoryUnis. Long, 

 tota 4-2, alee 2-1, caudae 1-0, tarsi 0-9, rostri a rictu 0'75. (Descr. maris ex Chootum, Vera Paz. Mus. 

 nostr.) 



Edb. Mexico i^, Papantla ^, Cordova {Salle i°), Jalapa {de Oca ^^), Orizaba (Sumi- 

 chrast % Llano Verde and Playa Vicente {Boucard ^^), Mirador [Sartorius i"), 

 Tierra Caliente {le Strange), Guichicovi, Tehuantepec {Swmichrast ^) ; Guatemala, 

 Choctum ^^, forests between Cahabon and San Luis, Barranco Hondo and Savana 

 Grande, Pacific slope {0. S. 8j- F. B. G.) ; Costa Rica, Angostura and Turrialba 

 (CarmioP), Tucurriqui (Arce); Panama, Boqueti de Chitra and Cordillera del 

 Chucu ^, Santa Fe % Calobre (ArcS), Lion Hill (M'Leannan ^ ^). — Colombia ; Vene- 

 zuela ; Ecuador ^^ ; Guiana i. 



When first describing this Wren, Di. Cabanis had before him specimens from 

 Guiana and from Mexico, which he considered to be identical. Subsequent investiga- 

 tions have detected the species in almost every intermediate locality, showing that it 

 enjoys an uninterrupted range over this wide area. On the receipt of the first Mexican 

 specimens from M. Salle, Mr. Sclater compared them with Scytalopus griseicollis, and, 

 perceiving their difference, described the Wren as S. prostheleueus ^^. He soon ^^ ^^ 

 discovered that it was not a Scytalopus at all, but a very near ally of Cyphorhinus 

 leucostietus, if not identical with it. The bird, however, retained, this uncertain position 

 for some years, until the gradually increasing materials enabled us to state in 1864 ^ 



