FAMILY FORMICARIIDAE 233 



Philadelphia, vol. 70, 1918, p. 261) quotes notes from L. L. Jewel 

 made in the Canal Zone on a nest (date not given) "found in fork 

 of a small bush in the forest about four feet [1.2 meters] from the 

 ground, a thin pensile cup containing two nearly feathered young." 

 Gross (Ann. Rep. Smithsonian Inst, for 1926, 1927, p. 339, fig. 9) 

 on Barro Colorado Island recorded incubation by both female and 

 male, with the latter singing on the nest. A photograph shows the 

 nest (with the male on it), a rather deep, thick- walled cup, suspended 

 from a forked branch. Eisenmann (Smithsonian Misc. Coll., vol. 117, 

 no. 5, 1952, p. 36) on Barro Colorado Island, listed nests with eggs 

 found by Skutch April 18, May 7 and 16; by Gross July 16, and 

 July (with no day specified) ; and by Milne and Laughlin, June 24. 

 Nests were recorded by Skutch (Condor, 1946, pp. 19-21) as placed 

 low in undergrowth from 30 to 75 cm above the ground. The two 

 eggs were "heavily and rather uniformly mottled all over with umber 

 which covers half or more of the surface and is diffused into the 

 whitish ground cover." One set measured 23.0x15.1 and 23.0X 

 15.9 mm. Both male and female construct the nest and incubate the 

 eggs, alternating during the day, the female alone at night. Nesthngs 

 "were black-skinned, blind and devoid of down." 



The nominate form was described by Lafresnaye from specimens 

 collected by Delattre but with no locality noted on the type specimen. 

 Hellmayr (Cat. Birds Amer., pt. 3, 1924, p. 307) designated the type 

 locality as Panama. As Delattre is believed to have been in Panama 

 City it seems reasonable to restrict this to near Panama City, Panama. 

 While the bird may not occur near that point now due to expanding 

 human activities it was found there formerly. Three adult specimens 

 in the Museum of Comparative Zoology were taken there by 

 W. W. Brown, Jr., in May 1904. 



Beyond Panama, the extensive series in the National Museum 

 demonstrates that the range of nominate naevioides extends across 

 northern Colombia from northern Choco through the Sinu and 

 middle Cauca and Magdalena valleys to the Hacienda Santana north 

 of Bucaramanga. The considerable series of these birds now available 

 demonstrates also that another proposed race subsimilis described by 

 Todd (Proc. Biol. Soc. Washington, vol. 30, 1917, p. 129) with 

 type locality Jaraquiel, Department of Cordoba (formerly part of the 

 Department of Bolivar), in the lower Sinu Valley, south of Monteria, 

 may not be recognized. In a small series from the west coast in 

 central Choco and the lower Rio San Juan, Valle, the females appear 



