35 



Above darker slate grey ; sides of face and neck 

 vinous like under parts. 

 110a,. A ccipiter rhodogaster sulaensis (Schl.)., Vog. 

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

 Sula Is. Sparrow -Hawk. 



F. Thighs rufous or ochraceous ; no nuchal collar. 



a. Above slaty grey ; tail brown with about 5 



ashy brown bars ; cheeks and under surface 



white, with a few dusky shaft lines and bars 



on breast and flanks ; thighs chestnut. 



111. Accipiter erythrocnemis Gray, List Accipitr. 

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



Grey-backed Sparrow -Hawk. 



Above darker and browner ; head blackish ; 

 thighs pale ochre. 



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

 p. 41. 



White-bellied Sparrow-Hawk, 



Sula Islands. 



S. America, 

 Brazil to 

 Bolivia. 



Central 

 America. 

 (Guatemala, 

 Nicaragua) 



Above plumbeous ; thighs cinnamon rufous.* 



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

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



Salvin's Sparrow-Hawk. 



b. Above deep slaty grey, including sides of face ; 



below chestnut. 



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

 p. 303. Venezuela to 

 Chestnut-bellied Sparrow-Hawk. Colombia. 



Above and below plumbeous ; abdomen mixed 

 with ferruginous rufous. 

 Ilia,. Accipiter ventralis nigriplumheous Lawr., Ann. Ecuador 

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



Plumbeous Sparrow-Hawk. 



c. Above deep slate ; nape mottled with white ; 

 side of face and under surface tawny rufous. 



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

 p. 231 (1830). Togoland. 

 African Sparrow-Hawk. 



115a. Accipiter rufiventris perspicillaris Riipp., Neue Abyssinia. 

 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. 



