90 



incomplete band on outer feathers ; body 

 below regularly banded with silvery white 

 and slaty grey. 



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

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

 Surutu.] 

 Bolivian Buzzard-Hawk. 



E. BoHvia. 



Above a shade lighter and purer bluish- 

 grey ; below with dark barring sHghtly 

 narrower. | 



155b. Asturina nitida costaricensis subsp. nov. 

 [<J Pozo del Rio Gtande, Bornea, Costa Rica, 

 April 5, 1906, type in M.C.Z., Harvard.] 



Wing (? 237, $ 250 mm. ; above much 

 duller, approaching plagiata, the paler 

 bands nearly obsolete ; below with slate 

 bands duller and broader, white bands 

 narrower. 



Central 

 America 

 (Costa Rica). 



156. Asturina plagiata plagiata (Licht.) Nom. 

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

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

 [Vera Cruz.] 

 Mexican Goshawk. 



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

 ashy-grey without white bars ; head and 

 nape lighter ; 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 vmior Griscom, Am Mus. Costa Rica, 

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

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

 Costa Rican Goshawk. 



