90 



incomplete band on outer feathers ; body 

 below regularly banded with silvery white 

 and slaty grey. 



155a. Asturina nitida pallida Todd, Proc. Biol. E. Bolivia. 

 Soc, Wash., xxviii., p. 170 (1915). [Rio 

 Surutu.] 

 Bohvian Buzzard-Hawk. 



Above a shade lighter and purer bluish- 

 grey ; below with dark barring slightly 

 narrower. 



155b. Asturina nitida costaricensis subsp. nov. Central 

 [<? Pozo del Rio Gtande, Bornea, Costa Rica, America 

 April 5, 1906, type in M.C.Z., Harvard.] (Costa Rica). 



Wing c? 237, ? 250 mm. ; above much 

 duller, approaching plagiata, the paler 

 bands nearly obsolete ; below with slate 

 bands duller and broader, white bands 

 narrower. 



156. Asturina plagiata plagiata (Licht.) Nom. 

 Mus. Berol. p. 3 (1854). \Nom. nud.'] Schl. 

 Mus. Pays-Bas, i., Asturinae, p. 1 (1862). 

 [Vera Cruz.] 

 Mexican Goshawk. 



Wing <J 248-253, ? 270-278 mm. ; above 

 ashy-grey without white bars ; head and 

 • ' nape fighter ; tail with whitish band across 

 middle with remains of another neaier 

 base ; longer upper tail-coverts pure white ; 

 below banded as A. n. nitida. 



Mexico, 



N. to S. Arizona 



and Lower 



Rio Grande 



Valley. 



156a. Asturina plagiata minor Griscom, Am Mus. Costa Rica, 

 Novitates, Nov., 1921, (1921). [ Pigres, Nicaragua. 

 Costa Rica, type in Am. Mus. N. H.] 

 Costa Rican Goshawk. 



