ACCIPITER. — HETEROSPIZIAS. 229 



size. Total length 410 mm,, wing 235, tail 185, tarsus 73, middle 

 toe and claw 58. 



Immature. Diifers from the adult in being brown above with 

 rufous margins to the feathers and the entire under surface cream- 

 colour. 



The male described was collected on the Supenaara River, the 

 female on the Mazaruni River, and the immature on the Ituribisi 

 River. 



Breeding-season. Unknown in British Guiana. 



Kest Unrecorded in British Guiana. 



Eggs. Undescribed from British Guiana, 



Range in BrifisJi Guiana. Ituribisi River, Mazaruni River, 

 Supenaam Wixer {McConnell collection) ; Bartica, Mount Roraima, 

 3000 feet ( Whitely). 



Extralimital Range. Colombia, Brazil. 



Huhits. Schomburgk states (Reis. Guian. iii. p. 736) that this 

 bird frequents the oasis on the Savannas. The ^'Macusis^^ call it 

 Savato. 



Mr. J. J. Quelch (Timehri (2) vi. p. 141) remarks on this 

 species as follows : — " The Red-legged Sparrow-Hawdc (Accipiter 

 hicolor). These birds do not seem to occur commonly on the coast, 

 specimens having hitherto been obtained chiefly along the un- 

 inhabited parts of the great rivers, and more especially on the 

 more elevated parts of the country. They are ])y no means shy — 

 perhaps from the height and position of their j^erches, where they 

 are generally secure from molestation. They are very active on 

 the wing, and exercise a kind of terrorising influence over the 

 smaller and even many larger birds." 



Genus HETEROSPIZIAS Sbarpe. 



Heterospizias Sharpe, Cat. B. Brit. Mus. i. p. 160, 1874. Type H. meri- 

 dionalis (Lath.). 



This monotypic genus is characterized l)y having the tarsus half 

 the h-noth of the tail, and tlie nostrils round with lariie tubercular 

 |)rocess. 



111). Heterospizias meridionalis. 



i{i;i)-\viN(;i;D Hawk. 



FaJco meriitiondtiti Latli. Ind. Orn. i. ]>. .3G, 1790 (Cayenne). 

 IIi/po)/iorpJi>i?iS rut Hans Cal). in Sclioiuli. Keis. Guian. iii. [i. 7 k), ISIS. 



