_Description._--Head grey, with narrow white superciliaries; in other respects like _Zonotrichia pileata_: total length 6·3 inches, wing 3·2, tail 2·6. _Hab._ Patagonia. Durnford found this species common and abundant on the Chupat River and in the interior of Patagonia. It has a pretty song, and sings in the evening and during the night when the moon is shining. It nests among coarse grass and herbage, making an unpretending structure of the former material, which is lined with fibres. It lays four eggs, pale green, thickly striated with light reddish-brown spots running into each other, and most numerous at the large end. 79. ZONOTRICHIA STRIGICEPS, Gould. (STRIPE-HEADED SONG-SPARROW.) +Zonotrichia strigiceps+, _Burm. La-Plata Reise_, ii. p. 486 (Paraná, Santa Fé); _Scl. et Salv. Nomencl._ p. 31; _Scl. Ibis_, 1877, p. 47, pl. 1. fig. 2. _Description._--Above light brownish grey, striped with black; centre of crown ash-grey, under the grey a broad rufous stripe, beneath which is a narrow grey superciliary stripe; behind the eye a rufous mark; beneath, throat white, breast pale grey; sides and belly yellowish grey; middle of belly white: whole length 6·2 inches, wing 2·6, tail 2·6. _Hab._ Argentina and Patagonia. 80. ZONOTRICHIA HYPOCHONDRIA (d'Orb. et Lafr.). (RED-FLANKED SONG-SPARROW.) +Emberiza hypochondria+, _d'Orb. Voy., Ois._ p. 361, t. 45. fig. 1. +Zonotrichia hypochondria+, _Burm. La-Plata Reise_, ii. p. 486 (Mendoza). _Description._--Brownish grey, head darker; superciliaries white; wings brownish black, edged with greyish rufous; tail brownish black, four external pairs of rectrices with a long white mark on the inner web, the outer pair with the outer web also margined with white; beneath, throat and neck white; sides of head, mystacal line, neck and breast-band plumbeous; belly dirty white; flanks chestnut: whole length 6·0 inches, wing 2·8, tail 2·0. _Hab._ Bolivia and Western Argentina. Prof. Burmeister, who met with this species near Mendoza, says it is a true _Zonotrichia_, and not a _Poospiza_, as sometimes considered. 81. COTURNICULUS PERUANUS (Bp.). (YELLOW-SHOULDERED SONG-SPARROW.) +Coturniculus manimbe+, _Burm. La-Plata Reise_, ii. p. 486 (Paraná); _White, P. Z. S._ 1882, p. 600 (Corrientes); _Döring, Exp. al Rio Negro, Zool._ p. 40 (R. Colorado); _Barrows, Bull. Nutt. Orn. Cl._ viii. p. 131 (Concepcion). +Coturniculus peruanus+, _Scl. et Salv. Nomencl._ p. 32.