106 ZOOLOGY OF THE VOYAGE OF THE BEAGLE. 



Certhidea olivacea. Gould. 

 PLATE XLIV. 

 C. summo capite, corpore superiore, alls cauddque olivaceo-brunneis ; gutture et corpore 

 infra cinereis ; rostro pedibusque pallidh brunneis. 



Long. tot. 4 una ; rostri, \ ; alee, 2 ; caudal, \\ ; tarsi, j. 



Upper part of the head, body, wings and tail, olivaceous brown ; the throat, and 

 beneath the body, cinereous ; the bill and feet pale brown. 

 Habitat, Galapagos Archipelago. (Chatham and James Island). 



I believe my specimens, which include both sexes, were procured from Chat- 

 ham and James Islands ; it is certainly found at the latter. 



Phvtotoma rara. Mol. 



P. Bloxami, Children, Jard. and Selby's 111. 



P. rutila, Vieill. Mag. de Zool. 1832, ii. pi. 5. 



P. silens, Kittl. Mem. de l'Acad. des Sci. de St. Petersb. 



This is not a very uncommon bird in Central Chile : the fanners complain 

 that it is very destructive to the buds of fruit trees. It is quiet and solitary, and 

 haunts hedge-rows or bushes ; its manners are similar to those of our bullfinch, 

 (Loxia Pyrrhula). Iris bright scarlet. Mr. Eyton has given an anatomical 

 description of this bird in the Appendix. 



Dolichonyx oryzivorus. Swains. 



Dolichonyx oryzivorus, Swains. Faun. Bor. Am. 2. 278. 

 Emberiza oryzivorus, Linn. 



This one specimen only was seen at James Island, in the Galapagos Ar- 

 chipelago, during the beginning of October. It is remarkable that a bird 

 migrating, according to Richardson, as far as 54° N. in North America, and 

 generally inhabiting marshy grounds, should be found on these dry rocky islands 

 under the equator. Mr. Gray and myself carefully compared this specimen 

 with one from North America, and we could not perceive the slightest difference. 



1. Xanthornus chrysopterus. G. R. Gray. 



Oriolus cayennensis, Linn. Syst. 1. 168 ? 



Agelaius chrysopterus, Vieill. 



Psarocolius chrysopterus, Wagl Syst. Av. p. 



This bird generally frequents marshy grounds. I procured specimens from 

 La Plata and from Chile ; in the latter country it extends at least as far north 

 as the valley of Copiapo, in 27° 20' : on the eastern plains it does not range, 

 according to Azara, north of 28°. It builds in reeds. Molina says it is called 

 by the Indians Thili, or Chile — hence he derives the name of the country. 



