78. CEECHNEIS. 447 



21. Cerchneis dickersoni. 



Falco dickinsonii, Scl. P. Z. S. 18G4, p. 249 ; id. Ibis, 18G4, p. 305, 

 pi. viii. ; Kirk, Ibis, 1864, p. 316 ; Finsch u. Ilartl. Vog. Ostafr. 

 p. 71 (1870). 



Dissodectes dickinsoni, Scl. P. Z. S. 1864, p. 248, et Ibis, 1864, p. 306. 



Hypotriorcliis dickinsonii, Gray, Hand-l. B. i. p. 21 (1869). 



^salon dickinsonii, Bocaye, Jorn. Lisb. ii. p. 337 (1869). 



Adult male. Head and neck whitish ashy, with distinct blackish 

 shaft-stripes to the feathers ; rest of upper surface deep brown, in- 

 clining to black ; the quills much darker brown, banded on the inner 

 web with white ; rump and upper tail-coverts white, ^vith a slight 

 greyish shade ; tail banded alternately with black and greyish white, 

 the subterminal black bar being very broad, the tip white ; throat 

 whitish ; rest of under surface ashy brown, with a slight greyish 

 shade ; under wing-eoverts whitish ashy, with distinct shaft-stripes ; 

 cere, orbits, and feet yellow ; bill bluish black, yeUow at base of 

 lower mandible ; iris dark brown. Total length 11 inches, culmen 

 0-95, wing 8'3, tail 5, tarsus 1-6. 



Hah. E. Africa, Zambesi ; S.W. Africa, Mossamedes. 



a. (S ad. st. Lower Shire valley. Dr. Kirk 



b. S ad. St. Zambesi. Dr. Kirk 



22. Cerchneis zoniventris. 



Hypotriorcliis zoniventris, Peters, Sitz. k. Pr. Akad. Wiss. Berlin, 



'1853, p. 7 ; Hartl. Om. Madag. p. 17 (1861) ; Gray, Haiid-l. B. 



i. p. 21 (1869). 

 Dissodectes zoniventris, Scl. Ibis, 1864, p. 306; Gwiiey, Ibis, 1869, 



p. 446. 

 Falco zoniventris, Schl. ^ Poll. Faun. Madag., Ois. p. 165 (1868); 



Schl. 3Ius. P.-B. Revue Accipitr. p. 37 (1873). 



Adult female. Above ashy grey, the head and neck as well as the 

 interscapulary region nearly uniform, with strongly pronounced black 

 shaft-stripes ; scapulars, wing-coverts, and inner secondaiies barred 

 across with greyish black, the latter slightly tipped with whitish ; 

 quills blackish brown, with narrow whitish tips, barred vdih rufous 

 or greyish white on the inner web, all the feathers barred with pure 

 white underneath ; lower back, rump, and upper tail-coverts deep 

 bluish grey, the latter inclining to ashy at the tips, all with distinct 

 black shaft-stripes ; tail black, tipped with white, the two centre 

 feathers not barred, all the others more or less distinctly barred with 

 greyish white ; forehead and an indistinct eyebrow whitish, with 

 narrow brownish streaks ; sides of face ashy grey, with dusky streaks ; 

 throat white, the lower part rather broadly streaked with ashy brown ; 

 rest of under siirface duU white, broadly barred with ashy brown, a 

 little darker on the tlanks and under wing-coverts ; bill horn-blue, 

 the under mandible yeUow ; feet yellowish, claws black. Total length 

 12-8 inches, culmen 1, wing 9-1, tail 6-35, tarsus 1-5, middle toe 1-1. 



Adult male. Similar to the female, but a trifle smaller. Total 

 lengtb 12 inches, wing 8-75, tarsus 1-4."). 



