64 PROCEEDINGS OF THE NATIONAL MUSEUM vol. 79 



GEOSPIZA PROPINQUA Ridgway 



Tower Island ground finch 



Geospiza propinqua Ridgway, Proc. U. S. Nat. Mus., vol. 17, November 15, 

 1894, p. 361. (Tower Island, Galapagos Archipelago.) 



Four were obtained on Tower Island June 14 and 16, 1929, includ- 

 ing adult and immature males, and two females. The adult male has 

 the bill black except for a brownish wash along the gonys. In the 

 immature male it is brown. One of the females is very black with 

 the light markings much restricted. The other, with the light mark- 

 ings predominating below, is apparently a juvenile individual. 



These skins have the following measurements : 



Male, wing, 76.4, 72.5; tail, 47.5, 43.8; culmen from base, 18.6, 19.5; 

 depth of bill, 11.4, 10.9; tarsus, 24.6, 24.5 mm. 



Females, wing, 70.5, 68.9 ; tail, 42.0, 42.0 ; culmen from base, 19.3, 

 18.0; depth of bill, 12.7, 11.8; tarsus, 24.7, 22.5 mm. 



GEOSPIZA CONIROSTRIS Ridgway 



Conical-billed ground flnch 



Geospisa conirostris Ridgway, Proc. U. S. Nat. Mus., vol. 12, February 5, 

 1890, p. 106, fig. 2. (Hood Island, Galapagos Archipelago.) 



Six skins taken on Hood Island June 30 and July 1, 1929, include 

 one adult male and five females. The male has the bill black with 

 a slight wash of brown on the gonys. The females are very dark, 

 with the light margins of the feathers much restricted. Measure- 

 ments are as follows: 



Male, wing, 81.8; tail, 45.0; culmen from base, 20.8; depth of bill, 

 15.2; tarsus, 23.2 nmi. 



Females, wing, 73.3, 72.2, 72.6, 76.3, 74.5 ; tail, 43.6, 44.0, 44.0, 46.2, 

 44.0, culmen from base, 19.2, 19.4, 20.5, 20.2, 20.5 ; depth of bill, 14.7, 

 13.6, 16.2, 15.0, 14.5; tarsus, 21.7, 22.0, 23.0, 23.0, 23.0 mm. 



GEOSPIZA PACHYRHYNCHA Ridgway 



Thick-billed ground finch 



Geospiza pacliyrhyncha Ridgway, Proc. U. S. Nat. Mus., vol. 18, April 23, 

 1896, p. 293. (Tower Island, Galapagos Archipelago.) 



Two females of this heavy-billed form were collected on Tower 

 Island June 16, 1929, one being considerably darker than the other 

 with the sides of the mandible largely black. INIeasurements are 

 as follows: Wing, 82.0, 78.8; tail, 49.5, 46.7; culmen from base, 22.1, 

 23.7 ; depth of bill, 20.0, 21.8 ; tarsus, 25.8, 24.2 mm. 



