380 Annals of the Carnegie Museum. 



Crypturus soui modestus (Cabanis). 



Crypturus modestus Cabanis, Jour, fur Orn., 1869, 212 (Costa Rica). 



Easily distinguished from all other races of C soui by the prevail- 

 ing dark color both above and below, by the slaty-black pileum and 

 by the absence of rufous edgings on the wings. Chin and upper 

 throat ashy-white ; lower throat, upper chest, and sides of neck gray- 

 ish sooty-brown ; rest of lower parts grayish-fulvous or brownish- 

 fulvous, sides of head sooty-gray ; upper parts rich seal-brown, feathers 

 slightly edged with blackish, wing-coverts and tertials more olive- 

 brown ; upper tail-coverts deep umber or mummy-brown. 



Young birds are grayer or browner below, with less fulvous, and 

 sometimes have the wing-coverts tipped with dull rufous. Wing (?) 

 averages 135 mm. Fifteen specimens from Costa Rica and five from 

 Chiriqui examined. 



A single nest of this species was taken at Boruca, August 9, 1907, 

 containing two slightly incubated eggs. The nest was made on the 

 ground at the foot of a shrub in a tract of second-growth woodland. 

 Little attempt at nest-building was shown, merely a slight excavation 

 being made, and lined with a few leaves and grass. The eggs are 

 purplish-drab, unmarked. Measurements: 42 x 30 and 43 x 31 mm. 



Crypturus soui meserythrus (Sclater). 



Crypturus meserythrus Sclater, P. Z. S. , 1859, p. 392 (Playa Vicente, 

 Guatemala). 



Resembles C. s. panamensis in the color of the under parts, except 

 that the breast is brighter chestnut, and the pileum is slaty-black as in 

 modestus. 



Chin and upper throat white, feathers tipped with cinnamon-ochra- 

 ceous ; lower throat, upper chest, and sides of neck slate-gray, some- 

 times (in younger birds) washed with olive-brown ; lower chest, breast, 

 and flanks rich chestnut-brown, abdomen and sides cinnamon-ochra- 

 ceous, as in true soui ; upper parts intermediate in shade between pana- 

 mensis and modestus, while the wing-coverts and tertials are strongly 

 edged with dark chestnut as in panamensis. On the whole this form 

 greatly resembles panamensis, but can always be recognized by the 

 slaty-black pileum, the richer chestnut of the breast and the grayer color 

 of the lower throat. Specimens from Vera Cruz, Mexico, are the most 

 typical of this race and from these the description has been made. 



