88 FIELD MUSEUM OF NATURAL HISTORY ORNITHOLOGY, VOL. I. 



below the cypress belt. In this dense timber land it is difficult to 

 bring a trogon down with its feathers on, so numerous are the branches, 

 and so slightly attached are the feathers. 



70. Trogon elegans Gould. 



Two specimens, a female and an immature male, were taken 

 on the hills due north of El Rancho. None were seen elsewhere. 

 Iris dark brown; eyelids orange. 



71. Trogon puella Gould. 



Three adult males were obtained near Patulul, the only locality 

 in which this bird was found. Iris dark brown; bill chrome-yellow; 

 eyelids brown. 



72. Trogon melanocephalus Gould. 



This species was found only on the lower portion of the Atlantic 

 slope. At Los Amates it was common and five were added to the 

 collection at that place. Three more were obtained at Gualan. 

 One of these birds, an adult female, exhibits a case of asymmetrical 

 moult. The six rectrices of one side are fully grown, but the fourth, 

 fifth and sixth rectrices of the other side, reckoning towards the 

 middle, are only a third grown, and of equal length. Another female, 

 which was immature, has the second and fourth rectrices of one side 

 about half grown, and nearly of equal length, the other side being 

 complete. Iris dark brown; eyelids blue. 



73. Trogon caligatus Gould. 



Of this trogon one specimen was obtained at Gualan, one at 

 Mazatenango, and two at Patulul. Individual variation in color 

 is very noticeable. One specimen has a marine blue chest and a 

 bronzed grass-green rump; while another has the chest hyacinth 

 blue, and the rump glistening myrtle-green. Both are adult males. 

 Iris dark brown; eyelids yellow. 



74. Trogon massena Gould. 



A single specimen, the only one seen, was taken at Los Amates. 

 Iris brown. 



Family Momotidse. 



75. Eumomota superciliaris (Sandbach). 



Red-backed motmots were found only at El Rancho and Los 



