4G4 Dr. E. Lonnberg on Birds from 



lesser wing-coverts. Back and upper tail-coverts dark 

 slaty grey. Tail-feathers dark slaty, with an olive-green 

 tinge. Iris brown. Bill in a dry state black, except the 

 lower side, which is light horn-coloured. Culraen 108, 

 wing 355 (360), tail 148, tarsus 110 mm. 



From Heterocnus cabanisi this species is easily distinguished 

 by its different coloration. The back is not marked with 

 wavy cross-lines, but minutely dotted ; the ear-coverts are 

 not slaty blue, but chestnut-red ; the nape and hind-neck 

 are not sandy buff barred with black, but uniform chestnut- 

 red. 



The specimen was obtained at Tatarcnda on March 20, 

 1902. 



"h26. Tantalus loculator Linn. 



A specimen (of rather small dimensions) was shot at 

 Tatarenda in April 1902. 



Tantalus is said by the collector to occur singly here and 

 there on the small swamps. At a place between Tarija and 

 Caiza, however, it was seen in large flocks, soaring very 

 high in the air. It is said to be very shy, and to run a long 

 way before it rises. 



27. ElJXENUKA MAGUAKI (Gm.). 



Three specimens were seen and shot at a swamp near 

 Tatarenda. They made a clattering noise with their bills, 

 like the European Stork. 



28. Mvcteria Americana Linn. 



The Jabiru was seen at Fortin Crevaux, but was very shy, 

 and Mr. von Hofsten could not get near it. 



29. Chatjna cristata (Sw.). 



Several specimens of this bird were shot at Tatarenda in 

 March 1902. It lives in pairs on the swamps and rivers. 



30. Chenalopex jubatus (Spix). 



One specimen was observed and shot at Tatarenda. The 

 conjecture that this species would occur in Bolivia is thus 

 proved to be correct. The feet are red. 



