274 BULLETIN 133, UNITED STATES NATIONAL MUSEUM 



grasp, I should never have suspected its presence. The nest was 

 composed of bits of grass, and was warmly lined with many feathers. 

 The three eggs, with incubation partly begun, are dull white with a 

 very faint tinge of cream. The shell is slightly roughened. The 

 eggs measure, in millimeters, as follows: 22.2 by 16.8, 21.5 by 16.7, 

 and 21.4 by 16.5. 



An adult female, shot October 23, when first taken, had the 

 maxilla and tip of mandible fuscous black; base of mandible drab 

 gray ; iris light seal brown ; tarsus and toes ecru drab. 



Adult females, preserved as skins, were secured near Lavalle on 

 October 23 and November 9, and an immature female was shot at 

 Guamini on March 8. The two adults, though fully grown, differ 

 strikingly in color of throat patch, as in one it is yellow and in the 

 other cinnamon buff. The immature bird has the breast heavily 

 and the abdomen more lightly streaked with dusky. Doctor Har- 

 tert** has treated S. hudsoni as a subspecies of S. anthoides, with 

 which decision I find that I can not agree, as anthoides is distin- 

 guished b}^ its somewhat broader, less narrowly pointed rectrices, 

 and more suffused, less definite color pattern on the dorsal surface, 

 in addition to its darker coloration. 



CORYPmSTERA ALAUDINA ALAUDINA Burmeister 



CorypJiistera alaudina Burmeister, Journ. fiir Ornith., 1860, p. 251. (La 

 Plata States.) 



Near Tapia, Tucuman, the present bird was common from April 

 6 to 13, 1921 ; four of the six taken were preserved as skins. These 

 comprise adult males, shot April 6 and 12, and an immature male 

 and female, taken April 11. The immature specimens resemble 

 adults, but have the streaks of the undersurface narrower and 

 less sharply defined. The skin in this species is thick and very 

 tough. 



An adult male, when killed, had the maxilla sayal brown, shad- 

 ing to deep mouse gray at the tip and at the base of the culmen; 

 mandible dull light-grayish vinaceous; tarsus and toes cinnamon; 

 iris natal brown. 



I have not seen specimens of C. a. carnpicola Todd,^^ a northern 

 subspecies said to differ from the typical form in paler, more buffy 

 coloration above, with the underparts less heavily streaked. 



These curious birds inhabited dry, open scrub growing over roll- 

 ing hills, where they were found in parties numbering from three 

 to six, apparently families, as adults and young were taken from the 

 same flock. Though the birds were common, they were silent un- 



« Nov. Zool., vol. 16, December, 1909, p. 214. 



«Proc. Biol. Soc. Washin^on, vol. 28, November 29, 1915, p. 170. (Guanacos, 

 Bolivia.) 



