92 ZOOLOGY OF THE VOYAGE OF THE BEAGLE. 



space. Of the few birds inhabiting the desert plains of Patagonia, this is the most 

 abundant. At Port Desire I found its nest : egg, about .83 in length ; form some- 

 what more elongated than in that of the last species ; colour, pale green, almost 

 obscured by minute freckles and clouds of pale dull red. 



3. ZONOTRICHIA STRIGICEPS. Goul(L 



Z. capite castaneo, lined media obscure diviso, plumis singulis stria medid nigrofuscd, 

 humeri flexurd rufd ; corpore supra fuscescente, plumis singulis strid laid medid 

 ohscure fused ; remigihus, primnriis cauddque nigro-fuscis pallidd fiisco marginatis ; 

 strigd siqierciliari, faciei coll icpie lateribus, guld pectore ahdomineque medio cinereis ; 

 hypochondriis legminibusque caudoe infer ior ibus flavescentibus. 



Long. tot. 5f unc. ; rostri, | ; alee, 2^ ; caudw, 2| ; tarsi, |. 



Head chestnut, divided down the middle by a line of deep grey, each feather with 

 a stripe of hlackish brown down the centre ; point of the shoulder rufous ; the 

 remainder of the upper surface light brown, with a broad stripe of dark brown 

 down the centre of each feather ; primaries and tail brown ; secondaries 

 blackish brown, margined all round with pale brown ; stripe over each eye, 

 sides of the face and neck, throat, breast, and centre of the abdomen, grey ; 

 flanks and under tail-coverts buff; upper mandible black ; under mandible 

 light horn colour ; feet brown. 



Habitat, Santa Fe. Lat. 31° S. {October.) 



This species appears to replace in this latitude the Z. matutina, which is so 

 abundant on the banks of the Plata and in Chile, as that species does the Z. cani- 

 capilla of Patagonia and Tierra del Fuego. 



Passerin.4 jacarina. Vieill. 



Tanagra jacarina, Linn. 



Passerina jacarina, Vieill. Ency. Meth. p. 933. 



Emberiza jacarina, D'Orh. Sf Lafr., Syn. 



Le Sauteur, Azara, No. 138. 



Eupbone jacarina, Licht. Cat. p. 30. 



Fringilla splendens, Vieill. Ency. j). 981 ? 



I procured a specimen of this bird at Rio de Janeiro. 



