35 



Above darker slate grey ; sides of face and neck 

 vinous like under parts. 

 lK)a,. Accijnter rhodogaster sulaensis (Sclil.)., Vog. 

 Ned. Ind. Valke, pp. 26, 64, pi. 16, f . 3, 4 (1866). 

 Sula Is. Sparrow-HaAvk. 



F. Thighs rufous or ochraceous ; no nuchal collar. 

 Above slaty grey ; tail brown with about 5 

 ashy broAvn bars ; cheeks and luider surface 

 white, with a few dusky shaft lines and bars 

 on breast and flanks ; thighs chestnut. 



Accipifer eri/throcnemis Cray, List Accipitr. 

 B.M., p. 70 (1848). 

 Grey-backed Sparrow -Hawk. 



Sula Islands. 



a. 



111. 



Above darker and browner ; head blackish ; 

 thighs pale ochre. 



112. Accipiter cliionogaster (Kaup), P.Z.S., 1851, 

 p. 41. 



White-belliad Sparrow-Hawk. 



Above plumbeous ; thighs cinnamon rufous.* 



113. Accipiter salvini (Ridgw.), Bull. U.S. Geol. 

 Surv., ii., p. 121 (1876). 



Salvin's Sjjarrow-Hawk. 

 b. Above deej) slaty grey, including sides of face ; 

 below chestnut. 



114. Accipiter ventralis ventralis Sclat., P.Z.S., 1866, 

 p. 303. 



Chestnut -bellied Sparrow-Hawk. 



S. America, 

 Brazil to 

 Bolivia. 



Central 

 America. 

 (Guatemala, 

 Nicaragua) 



Venezuela. 



S. America, 

 Venezuela to 

 Colombia. 



Above and beloAv plumbeous ; abdomen mixed 

 with ferruginous rufous. 

 Ilia. Accipiter ventralis nigriplumheous Lawr., Aim. 

 Lye. N.Y., ix., p. 270 (1869). 

 Plumbeous Sparrow-Hawk. 

 c. Above deep slate ; nape mottled with white ; 

 side of face and under surface tawtiy rufous. 



115. Accipiter rufiventris Smith, S. Afr. Q. Jnl., i., 



p. 231 (1830). 



African Sparrow-Hawk. 

 115a. Accij)iter rufiventris perspicillaris Riipp., Neue 



Wirb. Vog., p. 41 (1836). 



Abyssinian Sparrow-Hawk. 



* I have an ad. (J from Escorial, Venez., snowy-white below, with reddish- 

 white thighs Ughtly barred with dusky, which seems to constitute a new form. 



Ecuador 

 and Peru. 



S. Africa, 

 Togoland. 



Abyssinia. 



