Dr. A. von Pelzeln on a new Species of Calliste. 337 



XXVIII. — Description of a new Species of Calliste, and of 

 a new Humming-bird of the Genus Heliangelus. By A. von 

 Pelzeln, Hon. Memb. B.O.U. 



Calliste albertinte. 

 C. clare viridis, capite et mento summo rufo-castaneis, nucha 

 flavescente, torque distincta nulla, campteriis rufo-cas- 

 taneis, dorso postico et gastrseo caeruleis, tibiis pallide 

 rufis, rostro superiore nigrescente, inferiore corneo, pedi- 

 bus cserulescenti-cinereis. Longit. b" , alae 2" W", 

 caudffi 1'' 10'^'. 



Tanagra gyrola ? (part.), Natterer, MS. Catal. n. 804. 



Calliste gyroloides (part.), Pelzeln, Orn. Bras. p. 207 

 (Salto do Girao.) 



Hab. Brasilia, Rio Madeira (Salto do Girao) {Natterer). 



C. gyroloidi (Lafr.) similis, sed differt capite magis rufes- 

 cente, nucha flavescente absque torque distincta, et prseser- 

 tim campteriis rufo- castaneis nee aureis; a C. gyrola dorso 

 posteriore cseruleo et campteriorum colore, a C. desmaresti 

 iisdem characteribus et gastraeo cseruleo discrepat; cum 

 C lavinia, Cassin, colore campteriorum convenit, sed tectri- 

 cibus alarum et remigibus viridibus et gastrseo cseruleo di- 

 versa. 



Head, cheeks, and chin rufous chestnut, upper surface 

 generally green ; neck yellowish green, but without a distinct 

 collar ; shoulders bright reddish chestnut ; rump and under 

 surface blue; under tail-coverts green; thighs pale reddish. 



The bright reddish chestnut colour of the shoulders distin- 

 guishes this bird from all known species of the gyrola group, 

 with the exception of C. lavinia ; but the latter diff'ers in 

 having the wing-coverts and outer edges of the secondary and 

 shorter primary quills rufous, and the undersurface green, 

 with exception of a longitudinal stripe of pale blue on the 

 throat and another on the middle of the abdomen. 



During a recent visit of Herr Taczanowski to Vienna, when I 

 showed him Natterer^s collection of birds'* skins, he pointed 

 out the difference of this red-shouldered bird from the indi- 

 viduals of C. gyroloides, under which name it had been pre- 

 viously comprised. 



