2l6 BIRDS OF THE REPUBLIC OF PANAMA PART 3 



This western race was named by Cabanis for Dr. Carl Hoffman, 

 the naturalist, who collected the type specimen in Costa Rica. 



FORMICARIUS ANALIS UMBROSUS Ridgway 



Formicarius umbrosus Ridgway, Proc. U.S. Nat. Mus., vol. 16, November 28, 

 1893, pp. 670 (in Key), 681. (Talamanca, Costa Rica.) 



Characters. — Dark chestnut-brown above, with tail black for most 

 or all of upper surface ; side of head and neck darker brown. 



Measurements. — Males (10 from Bocas del Toro, Costa Rica, and 

 Nicaragua), wing 84.4-94.8 (90.0), tail 46.2-54.4 (51.4), culmen 

 from base 21.6-24.4 (23.1), tarsus 29.0-35.8 (33.4) mm. 



Females (10 from Bocas del Toro, Costa Rica, and Nicaragua), 

 wing 83.9-91.2 (87.9), tail 46.1-53.3 (49.9). culmen from base 20.6- 

 23.8 (22.3), tarsus 31.5-35.0 (33.2) mm. 



Resident. Found locally in forests of western Bocas del Toro. 



The first records of this subspecies for Panama were specimens 

 collected by Hasso von Wedel, taken near Almirante May 24, 1927, 

 and July 17, 1928 ; at Guabo (a farm near Chiriquicito) April 4 and 9, 

 1928 ; and at 360 meters elevation at Buena Vista, on the trail from 

 Chiriqui Grande to Boquete, March 23, 1928. Two from Zegla, 

 near the mouth of the Rio Terebe on the Rio Changuinola, in the 

 Peabody Museum, Yale University, were taken by Austin Smith 

 May 18 and 20, 1927. The National Museum has two from Almirante, 

 secured by C. O. Handley, Jr., February 14, 1960, and by Rudolfo 

 Hinds, May 23, 1961. Eugene Eisenmann (Condor, 1957, p. 254) 

 recorded them near Changuinola at the end of June and the first of 

 July 1957. They may be only local in this region as I did not find them 

 there from January to March 1958. 



The race umbrosus ranges on the Caribbean slope from the Rio 

 Guampii, eastern Honduras (Monroe, A.O.U., Mon. 7, 1968, p. 238) 

 south through Nicaragua and Costa Rica. From present information, 

 it is not known east of the Laguna de Chiriqui in Bocas del Toro. 



A nest, supposed to be this species, placed "in a low, large-leaved 

 plant" which held one heavily spotted egg, found by M. A. Carriker, 

 Jr., near the Rio Sixaola, Costa Rica in March 1904 (Ann. Carnegie 

 Mus., vol. 6, 1910, p. 625) was wrongly identified, as birds of this 

 species nest in holes and lay plain white eggs. 



FORMICARIUS ANALIS PANAMENSIS Ridgway 



Formicarius moniliger panamensis Ridgway, Proc. Biol. Soc. Washington, vol. 

 21, October 20, 1908, p. 195. (Talamanca, Costa Rica.) 



