104 
ZOOLOGY OF THE VOYAGE OF THE BEAGLE. 
olivaceo marginatis ; gutture pectoreque drier ascenti-olivaceis, singulis in medio 
plumis obscurioribus ; abdomine, lateribus crissoque cinereis stramineo tinctis. 
Long. tot. unc. ; alee , 3f ; caudce, 2 ; tarsi, 1^ ; rostri, ^ ; alt. rostri, |. 
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. psiitaculus 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. intensb fuliginosa, crisso albo ; rostro et pedibus nigrescenti-brunneis. 
Long. tot. 5 unc. ; rostri , § ; alee , 2-| ; caudce, If ; tarsi, §. 
Fcem. Corpore superiore, gutture pectoreque intensb brunneis, singulis plumis palli- 
diorb marginatis ; abdomine crissoque cinereis, stramineo tinctis ; rostro pallidb 
fusco ; pedibus nigrescenti-fuscis. 
Deep sooty black, with the under taiheoverts 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 
