BIRDS. 
103 
8. Geospiza dubia. Gould. 
G. (Foera. Mas ignot.) summo capite et corpore supra fuse is, singulis plumis cinera- 
scenti-olivaceo marginatis ; striga super ciliari, genis, gut lure, corpore infra cinera- 
scenli-olivaceis, singulis plumis nota centrali fused ; alis caudaque brunneis singulis 
plumis olivaceo-cinereo marginatis ; rostro sordid k albo, pedibus obscurb fuscis. 
Long. tot. 3§ unc. ; alee, 2 J ; caudce , 1 f ; tarsi , | ; rostri, § : alt. rostri, f . 
Upper surface fuscous, with each feather margined with cinereous olive ; the 
streak above the eye, cheeks, throat, and beneath the body, cinereous olive, 
with the middle of each feather fuscous ; the wings and tail brown, with each 
feather margined with cinereous ash ; the bill white, and the feet obscure 
fuscous. 
Habitat, Galapagos Archipelago, (Chatham Island.) 
Sub-Genus.— CAMARHYNCHUS. Gould. 
Camarhynchus dijfert a genere Geospiza, rostro debiliore, margine mandibulce supe- 
rioris minus indentato ; culmine minus elevato in frontem et plus arcuato ; lateribus 
tumidioribus ; mandibula inferiore minus in genas tendente. 
Camarhynchus psittaculus is the typical species. 
1. Camarhynchus psittaculus. Gould. 
Plate XL. 
C. (Fcem.) summo capite corporeque superior e fuscis; alis caudaque obscurioribus ; 
gutture corporeque inferiore, cinerascenti-albis, stramineo tinctis ; rostro pallide 
flavescentifusco; pedibus fuscis. 
Long. tot. 4f unc. ; alee, 2f : caudce , If ; tarsi, | ; rostri | ; alt. rostri , |. 
The upper part of the head and body fuscous ; the wing and tail darker ; the 
throat, and beneath the body cinereous white, tinged with straw-colour ; 
the bill pale yellowish fuscous, and the feet fuscous. 
Habitat, Galapagos Archipelago, (James’ Island.) 
The species of Camarhynchus do not differ in habits from those of Geospiza ; 
and the C. psittaculus might often be seen mingled in considerable numbers in the 
same flock with the latter. Mr. Bynoe procured a blackish specimen, which, 
doubtless, was an old male ; I saw several somewhat dusky, especially about 
the head. 
2. Camarhynchus crassirostris. Gould. 
Plate XLI. 
C. (Mas jun. et Fcem.) corpore superiore inlensb brunneo, singulis plumis cinerascenti- 
