428 , BIRDS OF BRITISH GUIANA. 



subeqnal. The tail is almost square at the tip, the outermost 

 feather on eiich side being only sliglitly shorter than the middle 

 ones. The tarsus is about one-third longer than the exposed 

 culmen, and the middle toe and claw about one-fifth longer than 

 the tarsus. Coloration : male and female different. 



Key to the Species and Subspecies. 



A. General colour of plumage above grey. 



a. Bill whitish, 



a'. Smaller and paler; wing less than 



60 mm S. intermedia, p. 428. 



b'. Larger and darker ; wing more 



than GO nun *S^. longipennis, p. 429. 



b. Bill blackish S. tvhiteleyana, p. 430. 



B. General colour of plumage above black. 



c. Sides of face uniform black, throat 



white S. americana, p. 431. 



d. Sides of face particoloured ; throat 



black. 



c'. Entire crown of head black ^S*. bouvronides, p. 432. 



(/'. Middle of crown white in con- 

 trast to the rest of the crown ... S. lineolo, p. 433. 



C. General colour of plumage above olive S. gutturaiisroraimcB,^. 435. 



619. Sporophila intermedia. 

 Grey Seed-eater. 



SporopJiila infermedia Cab. Mus. Hein. i. p. 149, 1851 (Venezuela) ; 



Chubb, Bull. Brit. Orn. CI. xH. p. 35, Nov. 1920. 

 Hpermopliila grisca (nee Gmel.) Sharpe, Cat. B. Brit. Mus.xii. p. 96, ISSS. 

 Sporopliila (jrisea (nee Gmel.) Brabourne &.. Chubb, B. S. Amer. i. p. 364, 



no. 3735, 1912. 



Adult male. Crown of head, sides of face, back, outer aspect 

 of wings and tail ash-grey ; inner webs of flight-quills blackish, 

 white on the basal portion, some of the outer primaries white at 

 the base of the outer webs ; tail-feathers blackish fringed with 

 grey ; throiit, sides of neck, and sides of body ash-grey ; middle 

 of breast, middle of abdomen, under tail-coverts, axillaries, and 

 under wing-coverts white like the inner edges of the quills 

 below ; remainder of quill-lining and lower aspect of tail greyish 

 brown. 



Total length 119 mm., exposed culmen 9, wing 57, tail 47, 

 tarsus 16. 



The above description is based on a specimen in the British 

 Museum, from Venezuela. 



