Forms of South-American Birds. 193 
DUNCANULA, gen. nov. 
The species that I propose to separate as a new genus 
under the above designation has hitherto been placed by 
authors in the genus Sporophila, Cab., from which it differs 
in having a long and acutely pointed bill, or under Cata- 
menia, Bonaparte—founded on Linaria analis, d’Orb.,— 
which is synonymous with Sporophila, Cab. 
Type, D. homochroa (Sclater). 
Duncanula duncant, sp. n. 
Adult male. Allied to D. homochroa (Scl.), but differs in 
having the upper surface olive-brown, with dark shaft-lines 
to the feathers, instead of slate-grey. 
Total length 128 mm.; exposed culmen 10; wing 65; 
tail 58; tarsus 20. 
Adult female. Similar to the adult male, but rather 
smaller. Wing 60 mm. 
Hab. Mount Roraima, British Guiana. 
The specimens described were collected by the late 
Mr. F. V. McConnell at Mount Roraima during his expe- 
dition in October 1898. 
Sporophila longipennis, sp. n. 
Adult male. Allied to 8. intermedia, Cab., but differs in its 
darker coloration and larger wing-measurements. 
Total length 107 mm.; exposed culmen 10; wing 65 ; 
tail 42; tarsus 15. 
Hab. Mount Roraima, British Guiana. 
The type, which is in the British Museum, was collected 
by the late Henry Whitely at Mount Roraima, 3500 feet, 
January 1884. Salvin-Godman Collection. 
Sporophila gutturalis roraime, subsp. n. 
Adult male. Similar to S. gutturalis gutturalis, but differs 
in having the black on the upper surface much more restricted 
and in its smaller wing-measurements. 
Total length 105 mm.; exposed culmen 8; wing 54; 
tail 45; tarsus 15. 
flab. Mount Roraima, British Guiana. 
The type, which is in the British Museum, was collected 
by the late Henry Whitely at Mount Roraima, 3500 feet, 
June 1883. Salvin-Godman Collection. | 
Ann. & Mag. N. Hist. Ser. 9. Vol. vii. 13 
