368 



PATAGONIAN EXPEDITIONS: ZOOLOGY. 



Tail, 6.O. 



Tarsus, 8.3. 



The sexes do not appear to differ in size, but there is a marked indi- 

 vidual variation in this particular. 



Color. — Adult male. The general color is white, sometimes showing 

 in freshly killed examples a rosy or salmon buff tone. The quills and 

 tail black, with dark metallic green and bronzy reflections. 



Fig 



Tantalus loculator. Adult male. Detail of foot. '< natural size. 



Head : Entirely unfeathered. Dark bluish lead color, becoming yellow 

 on the forehead; scaled. See cut 188. 



Neck: Unfeathered except for the third nearest the body, which is 

 feathered all round with white. 



Back : White, including upper tail-coverts. 



Tail : Rectrices black, with dark bronzy green, or deep metallic purple 

 reflections. 



Wings : White. The bastard wing, primary-coverts and quills black, 

 with dark bronzy green gloss or reflection. Inner secondaries white. 



Under parts : Except for the unfeathered portion of neck, wholly white, 

 showing frequently in freshly killed birds a rose or salmon buff" blush on 

 the breast. 



