172 BULLETIN 133, UNITED * STATES NATIONAL MUSEUM 



of the pampas race. Flocks were noted near Guamini, Buenos Aires, 

 as late as March 3. 



In Paraguay the lapwing was called taow taow by the Anguete 

 Indians, an interesting similarity to the teru teru of the Guaranis 

 by which the bird is known almost universally in the southern repub- 

 lics. Both names are bestowed in imitation of the bird's notes. 



The downy young bird *^ secured is avellaneous on the dorsal sur- 

 face with irregular spottings and markings of black, a band of black 

 across the nape, and broken streaks of heavy black in the center of 

 the back and on the flanks; undersurface white, with a broad black 

 band across foreneck and upper breast that is variegated with white 

 in a median longitudinal line, forming a faint stripe; thighs vina- 

 ceous buff ; tail mixed avellaneous and black. This bird has no wing 

 spur but, like adults, possesses a prominent claAv on the pollex. 



Attention is called to the fact that the plate used as the frontis- 

 piece for volume 2 of Hudson's Birds of La Plata (London, 1920) 

 represents the northern typical form of teru teru with undivided 

 grayish-brown breastband, and not the subspecies that inhabits the 

 pampas. 



Family THINOCORIDAE 



THINOCORUS RUMICIVORUS RUMICIVORUS Eschscholtz 



Thinocorus rumicivorus Eschscholtz, Zool. Atlas, pt. 1, 1829, p. 2, pi. 2. 

 (Concepcion Bay, Chile.) 



Several subspecies of the small seed snipe have been proposed from 

 various parts of its extensive range; so far as I may perceive from 

 material now at hand those from Chile, Argentina, and Uruguay be- 

 long to one form. Rothschild **' has described Thinoco7'us rumici- 

 vorus venturii from Barracas al Sud, Buenos Aires (based on winter 

 migrants from the south, since in eastern South America the species 

 does not breed north of Patagonia). Series including birds from 

 Chile, from near Buenos Aires (Conchitas), Uruguay, and Patagonia 

 (Zapala, Neuquen, and Coy Inlet, Santa Cruz) show considerable in- 

 dividual variation but no differences that may be correlated with 

 range. Should it prove on the basis of more extensive material that 

 an eastern subspecies may be recognized Tinochorus swainsonii 

 Lesson ^^ named from Buenos Aires *^ must be used for it. 



Lowe's Thincorus peruvian-us,*° from Islay, Peru, must be consid- 

 ered a synonym of Peale's Glareola cuneicauda^^ named from San 



<5 See also description of tliis plumage by Henninger, Auk, 1923, p. 122. 

 *«Bull. Brit. Orn. Club, vol. 41, Apr. 13, 1921, p. 111. 

 " Ferussac's Bull. Sci. Nat. Geol., vol. 25, June, 1831, p. 344. 



••« See Lesson, 111. Zool., Livr. 6, pi. 16, dated .Tune 1, 1831 (according to Mathews. 

 Nov. Zool., vol. 18, 1911, p. 12, published in February, 1833). 

 ^"BuU. Brit. Orn. Club, vol. 41, Apr. 13, 1921, p. 111. 

 50 U. S. Expl. Exp., vol. 8, 1848, p. 244. 



