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SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. I50 



on sides; back, tertials, rump, and upper tail coverts dull cinnamon- 

 brown, with a narrow tip and a broad crescent-shaped subterminal 

 spot black ; under surface grayish brown, shading toward light olive 

 on the sides, barred strongly but brokenly with black; under tail 

 coverts sepia, tipped with clay color and light cinnamon. This very 

 distinct plumage appears to be retained only briefly before it is re- 

 placed by the adult dress. Few examples showing it are found in 

 museum collections. 



Fig. 4. — Little tinamou, perdiz de rastrojo, Crypturellus soui. 



An adult male C. s. panamensis, taken at Puerto Obaldia, San Bias, 

 March 15, 1963, had the iris orange; maxilla fuscous black, except 

 the tip which was olive-brown; mandibular rami and gape honey 

 yellow; distal part of mandible dull yellowish brown; tarsus and 

 toes, including claws, dull greenish yellow. 



An adult female of the race C. s. poliocephalus, taken at Tonosi, 

 Los Santos, March 28, 1957, had the iris light brown; base of 

 mandible brownish (avellaneous) ; maxilla and tip of mandible dark 

 neutral gray ; front of tarsus greenish gray, with the margins of the 

 scutes brownish; back of tarsus and toes brownish; claws neutral 



