VOL 



1893 



jy^'"] PROCEEDINGS OF THE NATIONAL MUSEUIM. 515 



172. Tiogon nielaiiocephalus (ioiilil. 



Coiiimou. The most abundant of the Tiogons in the localities visited 

 by nie. It often wanders into tlie plantations. Sometimes found in 

 companies of six or eight. Tlie note Is of one syllable, often re|)eated. 



The flight of this and other species of Trogons is very irregular, 

 something like that of a Goldfinch {Spinus tristis). 



Orbital ring pale blue; iris dark brown. 



Family CAPRIMULGID^. 

 173. Chordeiles virginianus henryi (Cass.). 



Exceedingly abundant during fall and winter on the Escondido. 



First seen August 1 7. Specimens from Arizona, Mexico, and Nicaragua 



as a general thing have shorter wings than birds from the north, tlie 



difference being about a half inch, but in one ^N^icaraguan specimen the 



wing is fully as long as in northern examples, Avhile three specimens 



from the Dakotas and Minnesota are as small as any of the southeri 



ones. 



174. Nyctidromus albicollis (Gniel.). 



Abundant, particularly at Greytown. These birds are very partial 

 to open places and clearings, but are also found, though less commonly, 

 in the dense woods. Specimens shot at Greytown early in February 

 were breeding, and eggs about to hatch were obtained May 18. During 

 the mating season two or three of these birds get together and utter 

 very remarkable, low, guttural noises impossible to describe. The 

 ordinary note may bo represented by "kwe ah-reo," uttered in a clear, 

 ringing, and rather tremulous voice, and can be heaxd a long distance; 

 the call from a distant bird sounds like " ah-reo." The birds are so 

 abundant that at night the air seems to be filled with their notes, coming 

 irom all directions. 



Stenopsis aWieandd Ijiiwr''. While paddling up the Kio Frio, birds 

 were several times observed that I now feel quite sure were of this or 

 another sjiecies of Sfenn2).sis. They made their appearance just before 

 nightfall, while still enough daylight remained to allow a fair sight of 

 them. They flew close to the edge of the forest, at a height of 30 or 

 more feet above the water. Their flight was steady and rather slow. 

 The birds api^eared to be grayish and had square tails. I did not hear 

 any note. In April, about 10 miles from Greytown, I saw one as it flejA' 

 across an opening in the forest and disai)peared in the dark trees be- 

 yond. If not ^tenopsis these birds were of a species as yet not recorded 

 from Nicaragua or Costa Rica. 



Family MICROPODID.E. 

 175. Paiiyptila cayanensis (Omel.). 



Common at the "I. P." plantation on the p]scondido, but not observed 

 elsewhere. Specimens are veiy difiicult to obtain on account of the 



