HENICORHINA. 79 
an inch in length, separates Henicorhina 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. J. leucosticta, however, 
spreads eastwards into Guiana, and H. leucophrys southwards into Peru. The form is 
absent from South-eastern Brazil. 
1. Henicorhina leucosticta. 
Cyphorhinus leucostictus, Cab. Arch. f. Naturg. Jahrg. xiii. 1, p. 206"; Lawr. Ann. Lye. N. Y. vii. 
p- 820’, ix. p. 92°; Bull. U. S. Nat. Mus. no. 4, p. 13‘. 
Microcerculus leucostictus, Scl. & Salv. P. Z.S. 1864, p. 345°. 
Thryothorus leucostictus, Salv. P. Z. 8. 1867, p. 184°. 
Heterorhina leucosticta, Baird, Rev. Am. B. i. p. 1177; Sumichrast, Mem. Bost. Soc. N. H. i. 
p. 545 * (partim). 
Henicorhina leucosticta, Salv. P. Z. 8. 1870, p. 181°. 
Scytalopus prostheleucus, Scl. P. Z. 8. 1856, p. 290°. 
Cyphorhinus prostheleucus, Scl. P. Z.S. 1858, pp. 63",.96”, 1859, pp. 863°, 372“; Scl. & Salv. 
Ibis, 1860, p. 397”. 
Heterorhina prostheleuca, Baird, Rev. Am. B. i. p. 116“. 
Supra brunnea, dorso postico rufescente, superciliis elongatis albis, capitis lateribus albo nigroque variegatis, 
tectricibus alarum apicibus albo maculatis; subtus alba lateribus cinereis, ventre imo et crisso castaneis ; 
alis et cauda fusco-nigris, extus rufescente brunneo transvittatis; rostro nigro; pedibus corylinis, Long. 
tota 4:2, alee 2:1, caudee 1:0, tarsi 0-9, rostri a rictu 0°75. (Descr. maris ex Choctum, Vera Paz. Mus. 
nostr.) 
Hab. Mexico’, Papantla+, Cordova (Sallé1°), Jalapa (de Oca1*), Orizaba (Sumi- 
chrast®), Llano Verde and Playa Vicente (Boucard +), Mirador (Sartorius 1°), 
Tierra Caliente (le Strange), Guichicovi, Tehuantepec (Sumichrast +); GUATEMALA, 
Choctum ", forests between Cahabon and San Luis, Barranco Hondo and Savana 
Grande, Pacific slope (0. S. & FD. G.); Cosra Rica, Angostura and Turrialba 
(Carmiol?), Tucurriqui (Arcé); Panama, Boqueti de Chitra and Cordillera del 
Chucu °, Santa Fé ®, Calobre (Arcé), Lion Hill (d/‘Leannan ?°).—Cotomsia ; VENE- 
ZUELA; Ecuapor !!; Guianal. 
When first describing this Wren, D1. 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 arca. On the receipt of the first Mexican 
specimens from M. Sallé, Mr. Sclater compared them with Scytalopus griseicollis, and, 
perceiving their difference, described the Wren as S. prostheleucus'4. He soon 1! 12 
discovered that it was not a Scytalopus at all, but a very near ally of Cyphorhinus 
leucostictus, 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 18645 
