104 ZOOLOGY OF THE VOYAGE OF THE BEAGLE. 



olivaceo marginatis ; gutture pectoreque cinerascenti~olivaceis, singulis in medio 

 plumis obscurioribus ; abdomine, lateribus crissoque cinereis stramineo tinctis. 



Long. tot. 5| unc. ; aloe, 3| ; caudw, 2 ; tarsi, 1-J ; rostri, ^; alt. rostri, J. 



Upper part of the body deep brown, with each feather margined with cinereous 

 olive ; the throat and breast cinereous olive, with the middle of each feather 

 darker ; the abdomen, sides, and under tail coverts cinereous tinged with 

 straw colour. 

 Habitat, Galapagos Archipelago, (Charles Island ?) 



I am nearly certain that this species is not found in James Island. I believe 

 it came from Charles Island, and probably there replaces the C. psittaculus of 

 James Island. I obtained three specimens, one male, and two females ; from the 

 analogy of so many species in this group, I do not doubt the old male would 

 be black. 



Sub-Genus.— CACTORNIS. Gould, 



Cactornis differt a genere Geospiza rostro elongato, acuto, compresso, longitudine 

 altitudinem excellente ; mandibulce superioris margine vix indentato ; naribus 

 basalibus et vix tectis ; tarsis brevioribus, unguibus majoribus et plus curvatis. 

 Cactornis scandens is the typical species. 



1. Cactornis scandens. Gould. 



Plate XLII. 

 C. intense fuliginosa, crisso albo; rostro et pedibus nigrescenti-brunneis. 



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



Fcem. Corpore superior e, gutture pectoreque intense brunneis, singulis plumis palli- 

 diore marginatis ; abdomine crissoque cinereis, stramineo tinctis ; rostro pallide 

 fusco ; pedibus nigrescenti-fuscis. 



Deep sooty black, with the under tail-coverts white ; the bill and feet blackish- 

 brown. 



Female : Upper surface of the body, throat and breast intensely brown, with the 

 margins of each feather paler ; the abdomen and the under tail coverts 

 cinereous, tinged with straw-colour; the bill pale fuscous, and the feet blackish 

 fuscous. 



Habitat, Galapagos Archipelago, (James' Island.) 



The species of this sub-genus alone can be distinguished in habits from the 



several foregoing ones belonging to Geospiza and Camarhynchus. Their most 



