436 JOURN'AL OF THE WASHINGTON ACADEMY OF SCIENCES VOL. 11, NO. 18 



Description.— Type, U. S. Nat. Mus., Cat. No. 283655 (Biological Sur\'ey 

 Collection), adult female, collected near San Vicente, Department of Rocha, 

 Uruguay, January 27, 1921, by Alexander Wetmore (collector's no. 5827). 

 Crown black, the feathers tipped irregularly with cinnamon-buff, with poorly 

 defined median stripe of cartridge buff and chamois ; broad superciliary stripe 

 and lores dull cream-buff, with slight admixture of whitish, the feathers 

 bordering the crown lightly streaked with dull black; sides of head between 

 cream-buff and chamois; auricular region dull black; feathers behind rictus 

 streaked with black forming a distinct stripe; hindneck cream-buff with an 

 admixture of cartridge buff, with median streak of black that becomes broader 

 and heavier toward the back; back, rump and tertials black, the feathers 

 bordered by lighter margins shading from chamois at the base through cream- 

 buff to cartridge buff near the tip ; each feather faintly and irregularly barred 

 with dark chamois, these vermiculations greatly reduced in extent; upper 

 tail-coverts barred and margined broadly with chamois ; wing-coverts between 

 chamois and honey yellow, tipped with cartridge buff and barred broadly 

 with black ; primaries and secondaries fuscous (paler through wear and fading 

 at tips) ; outer primaries with outer webs barred regularly with cinnamon- 

 buff at base, the light bars becoming white toward tip of feathers ; both webs 

 of inner primaries and secondaries barred broadly with cinnamon-buff; throat 

 and lower margin of cheeks white; breast, abdomen, lower tail-coverts, flanks, 

 and under wing-coverts between chamois and honey yellow, the tips of the 

 feathers on breast and abdomen washed with olive-buff; upper breast with 

 small heart-shaped spots of dull black, these becoming narrow and more 

 linear on fore neck, and broader and heavier laterally; sides and flanks barred 

 heavily with dull black; lower breast and abdomen immaculate; under tail- 

 coverts marked indistinctly with fuscous; outer side of leg with vermicula- 

 tions of dull black; extreme outer under wing-coverts barred with dull black. 

 Maxilla slightly darker than natal brown, at base becoming benzo brown, 

 mandible very dull pinkish buff, duller toward tip; tarsus and toes between 

 fawn color and army brown (in dried skin). 



Measurements of type. — Wing 139.5 mm., taiP 43 mm., exposed culmen 

 18 mm., tarsus 37.5 mm., middle toe with claw 35 mm. 



Geographic range. — Eastern Uruguay (known from Department of Rocha). 



Remarks. — This distinct form differs from typical Nothura maculosa macu- 

 losa (Temminck) from Paraguay in much paler, less brownish coloration, 

 and in the characters assigned in the diagnosis as distinguishing savannarum 

 from N. m. nigrogntiata. It differs so markedly from other described forms 

 of spotted tinamous that it requires no further comparison with any save 

 Nothura m. minor (Spix) described from Tejuco (now called Diamantina), 

 Minas Geraes, Brazil. This form, according to Hellmayr,^ is related to A^. 

 m. maculosa but is smaller (wing 110 to 116 mm.), more chestnut above, and 

 paler with darker more restricted spottings and streakings below. No speci- 

 mens of this bird are available at present. In color of underparts minor is 

 similar apparently to savannarum, but it differs in its smaller size and its 

 much more rufescent color above. The form described here from eastern 

 Uruguay is supposed to range through Rio Grande do Sul, Brazil. 



^ Measurement of the tail is taken from coccyx to tip of longest filaments of the mixed 

 rectrices and tail coverts. 



5 Abh. Kan. Bayer. Akad. Wiss. II KI. 22: 707. 1905. 



