48 FALCOXID^. 



1, Polyboroides radiatus. 



L'Autour gris a ventre ray^ de Madagascar, Sonn. Voy. Ind. p. 181, 



pi. 183 (1782). 

 Vultur radiatus, Scop. Bel. Faun, et Flor. Insuhr. ii. p. 85 (1786). 

 Madagascar Falcon, Lath. Gen. Sj/n. Suppl. p. 32 (1787). 

 Faleo niadagascariensis, Baud. Traite, ii. p. 75 (1800). 

 Sparvius madagascariensis, t'ieill. N. Diet. x. p. 339 (1817). 

 Falco gymnogenys, Temni. PI. Col. i. pi. 307 (1820). 

 Nisus gymnogenys, Cuv. R>'gn. An. i. p. 334 (1829). 

 Gymnogenys madagascariensis, Less. Traite, p. 64 (1831). 

 Polyboroides radiatus, Gray, List Gen. B. p. 5 (1840) ; id. Gen. B. i. 



p. 31, pi. 11. fig. 2 (1845) ; Bp. Consp. i. p. 12 (1850) ; Hartl. Faun. 



Madag. p. 21 (1861) ; Scl. P. Z. S. 1863, p. 161 ; Grand. Rev. et 



Mag. de Zool. 1867, p. 321. 

 Gymnogenys radiatus, Kaup, Mus. Senek. iii. p. 260 (1845). 

 Circaetus radiatus, Kaup, Isis, 1847, p. 262. 



Polyboroides madagascariensis, Roch k^- E. Ketct. Ibis, 1862, p. 269. 

 Nisus radiatus, Schl. 3Ius. P.-B. Revue Accipitr. p. 100 (1873). 



Adult male. Above silvery grey, -with a few indistinct whitish 

 edgings to the scapulars ; quills black, with a distinct white margin 

 at the tip, the basal portion of the inner web greyish white mottled 

 with black, occupying more than half of the inner secondaries, so 

 that the black forms a broad subterminal bar ; lower back and rump 

 ashy white, barred with black ; upper tail-coverts black, broadly 

 tipped and irregularly barred with white ; tail black, slightly mottled 

 with white at immediate base, tipped with white and crossed with a 

 broad white band across the middle ; thi'oat and chest silvery grey, 

 like back ; rest of under surface white, narrowly but regularly barred 

 across with black, the under wing- and tail-coverts uniform with breast; 

 cere and bare skin round eye flesh-colour ; feet yellow ; iris black *. 

 Total length 23-5 inches, culmen 1-7, wing 15-5, tail 12, tarsus 3-5. 



Adult female. Total length 21 inches, culmen 1-8, wing 16, 

 tail 12, tarsus 4-15, middle toe 1-6 {Mus. Lugd.}. 



Hab. Madagascar. 

 «. c? ad. sk. Madagascar. Purchased. 



2. Polyboroides typicus. 



Polyboroides typicus, Smith, S. Afr. Q. J. i. p. 107 (1830) ; id. III. 



Zool. S. Afr. pis. 81, 82 (1849) ; Hartl. Orn. W. Afr. pp. 2, 269 



(1857); Cass. Proc. Phil. Acad. 1859, p. 30; Scl. P. Z. S. 1863, 



p. 102 ; Lnyard, B. S. Afr. p. 32 (1867) ; Gum. Ibis, 1868, p. 146 ; 



Sharpe, Ibis, 1869, p. 194 ; Finsch u. Hartl. Vog. Ostafr. p. 95(1870); 



Boeage, Jorn. Lisb. 1873, p. 3. 

 Serpentarius typicus, Guer. et Lafr. in Ferret et Gal. Voy. Abyss. Zool. 



ill. p. 181 (1847). 

 Gymnogenys melanostictus, Licht. Nomencl. p. 5 (1854). 

 Polyboroides radiatus, Strickl. Orn. Si/n. p. 143 (1855) ; Gurney, Ibis, 



1859, p. 153 ; id. Cat. Rapt. B. Korio. 3Ius. p. 12 (1804) ; Hem/l. Orn. 



JV;0.-4/r. p.76(1869). 



* These soft parts are taken from Grandidier, and if correctly given would 

 form a specific difference, as the African species has the bare part of the face 

 yellow. Mr. E. Newton, however, gives that of the Madagascar bird as yellow. 

 Cf. the accurate remarks in Mr. Gurney 's ' Catalogue' ((i. l,")). 



