52. HELOTARSrS. 299 



c. Juv. st. Philippine Islands. Iluofli Guniing, Esq. [C]. 



f. <S ad. st. Malacca. Andrew Charlton, Esq. [P.]. Type 



of A. harbatus. 



g. S jiiv. st. Borneo. 



h. Juv. sk. Menado, Celebes. J. Gould, Esq. 

 i. Skeleton. Dr. Meyer [C.]. 



4. Butastur ruiipennis. 



Poliornis rufipennis, S%md. Gifv. Vet. Akcul. Forh. Stockh. 1850, p. 131 ; 



Pelz. Verh. z.-h. Wien, 18G2, p. 151 ; Ilcuyl. Orn. N.O.-Afr. p. 95 



(18(;9) ; Gray, Hand-l. B. i. p. 16 (18G9). 

 Buteo rufipennis, Strirkl. P. Z. S. 1850, p. 214, pi. xxii. ; id. Oni. Syn. 



p. 36 (1855); 8chl. Mus. P.-B. Buteones, p. 25 (1802); id. Reme 



Accipitr. p. Ill (1873). 

 Poliornis percnopsis, Du Bus, Esq. Orn. pi. 29 (1850). 

 Circus mulleri, Heiigl. Nuum. 185], pt. 3, p. 36, pi. 1. 



Adult. Above cinereous brown, with distinct black shaft-stripes, 

 the feathers margined with rufous, more distinct on the hind neck ; 

 the head and neck rather darker than the rest of the upper surface ; 

 lores whitish, cheeks inclining to blackish cinereous, the ear-coverts 

 distinctly washed with ashy grey ; primary coverts rufous ; quills 

 rufous, tipped with whitish, before which is a broad subterminal bar 

 of blackish brown, secondaries more plainly tipped with whitish and 

 washed with cinereous brown, the innermost ones entirely of the 

 latter colour, and agreeing with the back, the lower surface of the 

 quills much paler, the feathers white for the greater part of the inner 

 web ; tail entirely cinereous brown, tipped with whitish and crossed 

 on all but the centre feathers with three or four blackish bands more 

 or less distinct, the under surface whitish, the bands a little more 

 distinct ; throat creamy buff ; rest of under surface pale rufous, with 

 narrow central shaft-streaks, a little broader on the sides of the body, 

 and gradually disappearing towards the abdomen, till they become 

 absent on the thighs, vent, and under tail-coverts, the latter of which 

 are whitish at base ; under wing-coverts entirely white ; cere and 

 lores bright yellow ; terminal half of bill dusky black, orange-yellow 

 at base; feet yellow ; iris bright yeUow. Total length 16-5 inches, 

 culmen 1-15, wing 12-3, tail 7-5, tarsus 2-5. 



Young. Differs from the adult in being much lighter in colour ; 

 head and neck dark brown, washed with rufous and streaked Avith 

 whitish, forming a rather distinct eyebrow ; underparts pale rufous 

 buff, the throat and abdomen whitish, with a few streaks of black 

 down the centre of the breast-feathers. 



Hah. North-eastern Africa. 



52. HELOTARSUS. ^ype. 



Helotaraus, Smith, S. Afr. Q. Journ. i. p. 110 (1830) . . H. ecaudatus. 

 Terathopius, Less. Traits, p. 47 (1831) H. ecaudatus. 



