460 Dr. E. Lonnberg on Birds from 



is smoky blackish above, washed with brown on the lower 

 back. Rump greyish brown. Under parts greyish white 

 with a faint silky gloss and some grey spots where the basal 

 parts of the down are visible. Neck grey, throat white, 

 sides of head grey, crown blackish with sandy-coloured tips 

 to the feathers. 



11. Parka jacana (Linn.). 



The iris is stated by Mr. von Hofsten to be " brown " 

 in au adult as well as in a young bird, both shot at 

 Tatarenda, the former on April 26th, 190.2, the latter on 

 March 27th, 1902. In the Cat. Birds Brit. Mus., as well as 

 by Salvadori, it is stated to be " yellow." 



This species was common, and was seen in large flocks 

 on the floating water-plants. 



12. Vanellus cayennensis (Gm.). 



Specimens were shot at Tatarenda and other places in 

 the Bolivian Chaco in March 1902. 



In one example shot on March 3rd some of the rectrices 

 have just been moulted and have rather broad white tips, 

 but the old tail-feathers of the specimens have the white 

 tips almost or quite worn off. Sides of head ashy grey, but 

 washed with brown. The colour is somewhat intermediate 

 between that of V. cayennensis and V. chilensis ; the measure- 

 ments indicate partly the smaller form. The short wing and 

 short culmen indicate V. cayennensis, the rather long tail 

 and short tarsus V. chilensis. I suppose that these forms 

 intergrade. 



13. HlMANTOPUS MELANURUS Vieill. 



A specimen w^as shot at a pool near Carapari, on the way 

 from Tarija to Caiza, in March 1902. 



_f-14. Bartramia longicauda (Bechst.). 

 Tatarenda, April 1902. 



15. Aramus scolopaceus (Gmelin). 

 Tatarenda, March 20th, 1902. Iris brown. 

 Culmen 120, tarsus 130, wing 345, tail 162 mm. These 

 measurements are larger than those recorded in the Cat. Birds 



