106 ALBATROSS EXPLORATIONS, BIRDS RIDGWAY. 



11. Geospiza conirostris sp. nov. 



Fig. 2. — Geospiza conirostris. 



Sp. Char. — Similar to G. strenua Gould, but bill much more elon- 

 gated, much narrower, and culmen less arched. 



Hab. — Hood Island, Galapagos. 



Adult male (type, No. 116070, Hood Island, Galapagos, April 7,1888; 

 U. S. S. Albatross) : Uniform black, the longer under-tail coverts mar- 

 gined (rather broadly) with white; bill, legs, and feet wholly black. 

 Length (skin), 5.70; wing, 3.30; tail, 2.10; culmen, .95; gonys, .52; width 

 of lower mandible at base, .51; depth of bill at base, .70; tarsus, .95; 

 middle toe, .72. 



Adult female (No. 116076, same locality, etc.) : Much duller black than 

 the male, or dull slate-dusky, broken on the belly, flanks, etc., by dull 

 whitish streaks (edgings to feathers); all the under tail coverts mar- 

 gined with dull whitish ; under mandible dull brownish in middle por- 

 tion; legs and feet dull black. Length (skin), 5.50; wing, 3.10 (quills 

 worn at tip); tail, 1.75 (feathers very much worn at tip); culmen, .90; 

 gonys, .50; width of under mandible at base, .48; depth of bill at base, 

 .62; tarsus, .95; middle toe, .68. 



Immature (?) male (No. 116075, same locality, etc.) : Similar to the 

 adult female as described above, but rather more sooty, and lower 

 mandible pale brownish, with base and tip dusky. Length (skin), 5.75 ; 

 wing, 3.15; tail, 2.00; culmen, .90; gonys, .50; width of under inaudible 

 at base, .48; depth of bill at base, .68; tarsus, .93; middle toe, .70. 



Immature^) female (No. 116077, same locality, etc.) : Above dull sooty ; 

 anterior lower parts similar, but indistinctly streaked with pale grayish 

 bufly, this gradually increasing posteriorly until it becomes the prevail- 

 ing color and the sooty reduced to broad streaks. Length (skin), 5.70; 

 wing,3.10; tail,2.00; culmen, .89; gonys, .50; width of lower mandible at 

 base, .47; depth of bill at base, .62; tarsus, .92; middle toe, .67. Bill in- 

 termediate in color between that of adult female and immature male 

 described above. 



The additional adults (two of them males, the third with sex not de- 

 termined) agree minutely in form and size of bill and other measure- 

 ments with the adult specimens described, one of the males being like 

 the type in coloration while the other corresponds in plumage with the 

 adult female described. 



