164 BULLETIN 133, UNITED STATES NATIONAL MUSEUM 



A female shot October 28 showed Avell-developed ovaries. On 

 November 2 I flushed one from a nest and killed it, but unfortu- 

 nately lost it, so that I did not learn the sex. The nest was placed 

 under a tuft of dead grass on a dry, open island a hundred meters 

 in extent, surrounded by a broad expanse of marsh. The site 

 selected was on dry, open ground 15 meters from water. A few 

 grass stems had been broken down to form a little protected cavity, 

 entirely covered save in front, in which the two eggs lay with no 

 nest lining. In its lack of definite structure the whole reminded me 

 of the nest of a Wilson's phalarope. Incubation had begun. The 

 eggs, suggestive in a way of those of the black tern, have a ground 

 color slightly brighter than pale olive buff, spotted with heavj?^ irreg- 

 ular spots of black, and less extensively with buffy brown and Sac- 

 cardo's umber. The markings are much bolder and heavier in one 

 than in the other. The two eggs measured 34.7 by 24.6 mm. and 

 34.2 by 24 mm. 



Near the Laguna Castillos below San Vicente, Rocha, Uruguay, 

 an adult male was taken among rushes on January 31, 1921. 



The species was next encountered in the cienagas near Tunuyan, 

 Mendoza, Avhere it was common on March 25 and 26. Here painted 

 snipe frequented scattered clumps of grass or Scirpus at the border 

 of dense stands of cat-tails or, less often, marsh vegetation dead 

 or living that bordered channels of almost bottomless black mud. 

 At times a dozen or fifteen birds flushed together from some shel- 

 tered opening among the cat-tails, but more often they were encoun- 

 tered alone. Once or twice one darted in to alight near me and 

 instantly assumed a motionless attitude, standing with legs erect but 

 with the head and body inclined forward with the bill almost touch- 

 ing the earth. Occasionally one broke this tense attitude by a jerky 

 bow and then became motionless once more. Two adult males were 

 taken on March 26 and one on March 28. Though it was fall, testes 

 in these birds were 8 mm. long, as large as white navy beans. 



An adult female shot October 28 had the tip of the bill cinnamon 

 buff; base strontian yellow; the intermediate space on maxilla water 

 green, and on mandible celandine green; iris Rood's brown; tarsus 

 and toes vetiver green, shading to deep grape green on toes and 

 inside of tarsus. 



Family CHARADRIIDAE 



CHARADRIUS COLLARIS Vieillot 



Charadrius collaris Vieillot, Nouv. Diet. Hist. Nat., vol. 27, 1818, p. 136. 

 (Paraguay.) 



The widely ranging collared plover was recorded in small num- 

 bers at several localities. Two were recorded at Santa Fe, Santa Fe, 

 on July 4, 1920, and one July 8 at Resistencia, Chaco. On the whole 



