N0.13&1. A REVIEW OF THE TROGLODYTES— OBERIIOLSER. 203 



iiiidcr suit'ace; and sparsely spotted lower tail-coverts. There is also 

 more contrast between the rnmp and the back. A fairh' uniform 

 series from Matto Grosso, Rrazil, seems to indicate that the bird from 

 this region should be referred to rex^ though some of these specimens 

 have obsolete dark barring on the back, and though we have seen no 

 specimens from the type locality. 



TROGLODYTES MUSCULUS TECELLATUS (Lafresnaye and d'Orbignyj. 



Troglodytes tecellata Lafresnaye and d'Okbigny, Mag. de Zool., 1837, rl. ii, p. 25. 

 Troglodytes murinus Lesson, Rev. Zool., 1844, p. 434. 

 Troglodi/tes auda.c Tschudi, Fauna Peruana, 1845-46, p. 185. 

 Troglodytes musculus jnina Berlepsch and Stolzm.\nn, Pro(;. Zool. Soc. Lond., 

 " 1896, p. 329. 



Type locality. — Tacna, Peru. 



Geographical distrlhatlon. — Central and southern Peru to north- 

 western Bolivia. 



This race is similar to Troglodytes nuiscalus mriscalm, dilffering in 

 paler, somewhat more rufescent upper surface; lighter, more ochra- 

 ceous under parts; and very slightly or not at all spotted crissum. It 

 is thus close to rex, oddly enough somewhat intermediate between the 

 latter and muscidus, but is darker throughout, particularly on the 

 flanks and under tail-coverts. 



There is apparently little doubt that Troglodytes murinus Lesson, 

 from "Peru;" Troglodytes audax Tschudi, from "Peru," and Troglo- 

 dytes muscidns piina^ from Ingipirca, Peru, all refer to the same bird — 

 the one called earlier Troglodytes tecellata by LafresnaA'e and d'Or- 

 bigny — for all these descriptions indicate a moderately dark bird with 

 blackish or dusk}" bars on the back, thus agreeing perfectly with 

 specimens from central and southern Peru. An example from Mapiri, 

 Bolivia, is in all essential respects identical. 



TROGLODYTES MUSCULUS HORNENSIS (Lesson). 



Troglodytes liornensis Lesson, L'Institut, 1834, p. 316. 



Troglodytes nmgellanlcus Gould, Proc. Zool. Soc. Lond., 1836, j>. 88. 



T'oglodytes pallida LiAFREiiTss AYE and d'Orbigny, Mag. de Zool., 1837, il. ii, p. 25. 



Thriothorus rosaceus Lesson, Rev. Zool., 1840, p. 262. 



Troglodytes liortensis Gray, Gen. Birds, I, 1847, p. 158. 



Type locality. — At sea, 20 leagues southeast of Cape Horn.'- 

 Geographical distribution. — Argentine Republic and (^xtrenu^ south- 

 ern Chile. 



This southern race resembles musculus, but is paler, mo'-e grayish 

 above; lighter and isabelline below instead of ochraceous; the crissum 

 nuich less marked with blackish, sometimes immaculate. Birds from 



"Get oiseau a ^t6 pris en mer, le 7 Janvier 1831, a 20 lieues dans le sud-est dn cap 

 Horn. — Lesson, L'Institut, 1834, p. 316. This reference was kindly veritii-d by 

 •Mr. Outram Bangs. 



