BIEDS OF NORTH AND MIDDLE AMERICA. 499 



-Length (skins), about 127.00-146.05; wing, 77.47-82.55 

 (80.77); tail, 48.26-49.53 (48.61); culmen, 20.32-34.13 (22.35); depth 

 of bill at base, 16.75-17.78 (17.02); tarsus, 22.8-6-24.13 (23.62); middle 

 toe, 16.51-19.06 (18.03).' 



Fm,ale.—hQi\gth (skins), about 124.46-144.78; wing, 73.66-78.74 

 (76.18); tail, 44.45-46.23 (44.96); culmen, 19.81-22.86 (21.59); depth 

 of bill at base, 15.24-18.29 (16.26); tarsus, 22.86-24.13 (23.11); middle 

 toe, 17.02-18.29 (17.53).' 



Galapagos Archipelago (Hood Island and Gardner Island, near Hood). 



Oeospizaconirosiris Ridgway, Proc. U. S. Nat. Mua., xii, no. 767, Feb. 5, 1890, 106, 

 fig. 2 {Hood I., Galapagos Archipelago; coll. TJ. S. Nat. Mus. ); xix, 1897, 

 516, pi. 57, fig. 8 (monogr.)— Baur, Am. Nat., xxxi, 1897, 783 (Gardner I., 

 near Hood). 



Geospiza coniroslris conirosiria Rothschild and Hartert, Novit. Zool., yi, 1899, 

 158, pi. 6, figs. 17-20 (Hood I.; Gardner I., near Hood; crit.). 



{l)Geoapiza media Ridgway, Proc. U. S. Nat. Mus., xii, no. 767, Feb. 5, 1890, 

 107, fig. 3 (Hood I., Galapagos Archipelago; coll. U. S. Nat. Mus.). 



GEOSPIZA PROPINQUA Ridgway. 

 TOWER ISLAND GROUND FINCH. 



Very similar in size, general foi-m, and coloration to O. conirostris, 

 but bill still narrower, the culmen more convex terminally, the man- 

 dible relatively narrower (its vertical width not greater than that of 

 the maxilla), and more compressed; wing slightly shorter; adult male 

 with under tail-coverts pale buff marked with median cuneate streaks 

 of black, instead of being black margined with white. (Adult female 

 and immature birds not seen.) 



Adult male.^Wmg, 74.93-80.01; tail, 46.99-49.53; culmen, 20.83- 

 22.86; vertical width of mandible across rami, 5.84-6.60; vertical 

 width of maxilla in front of nostrils, 5.59-6.60: tarsus, 22.86-24.13; 

 middle toe, 17.27-19.06.' 



Galapagos Archipelago (Tower Island). 



Geospiza prupinqua Ridgway, Proc. U. S. Nat. Mus., xvii, no. 1007, Nov. 15, 1894, 

 361 (Tower I., Galapagos Archipelago; collection by Dr. G. Baur);* xix, 

 1897, 543, pi. 57, fig. 7 (monogr.). 



' Five specimens. The extreme measurements of the bill in a series of males as 

 given by Messrs. Rothschild and Hartert are as follows: Culmen, 18.50-24.00; gonys, 

 10.50-13.50; basal width of mandible, 9.00-13.00; basal depth of bill, 14.00-18.00. 



' Seven specimens, of which only two have the sex determined, but the remainder 

 probably females. 



^Five specimens. Having mislaid the table of measurements, I am unable to give 

 averages. Measurements from the same specimens as recorded by Messrs. Roths- 

 child and Hartert are as follows: Culmen, 19.00-23.00 (21.60); depth of bill at 

 base, 13.00-17.00 (15.00); basal width of mandible, 11.00-13.00 (12.00); gonys, 

 11.00-13.00 (12.00). 



* Now in the Tring Museum coUection. 



