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



fectly quiet. After a long wait, we began to get glimpses of the birds 

 in the heavy foliage, and soon a bird flew to a branch in plain view. 

 Most of the above 8 specimens were secured in this way. The native 

 name of this bird is "Calandria." 



Dendrocolaptid.se. 



Synallaxis pudica Scl. 



2 specimens. Guayabo 2 cT. Frequents low thickets. 



Siptornis erythrops (Scl.). 



1 specimen. Guayabo cT. 



Pseudocolaptes lawrencei Ridg. 



2 specimens. Vol. de Turrialba. 



Automolus cervinigularis hypophasus Ridg. 

 i specimen. Guayabo d\ 



Xenicopsis subalaris lineatus (Lawr.). 



i specimen. Coliblanco d\ This species appears to vary greatly 

 in the amount of rufous on the nape and on the throat and breast. 



Xenops genibarbis ///. 



i specimen. Guayabo d\ The testes of this bird were active. 



Xenops rutilus Licht. 



i specimen. Guayabo cT. Testes showed recent or approaching 

 activity. 



Premnoplex brunnescens (Scl.). 



3 specimens. Guayabo, 9; Coliblanco d\ 9. 



Margarornis rubiginosa Lawr. 



g specimens. Coliblanco 2 cT, i 9 ; Vol. de Turrialba 2 d\ 4 9 . 



These birds were very common in the open park-like forest at the 

 base of the Ash-cone. 



Dendrornis nana costaricensis (Ridg.). 

 i specimen. Guayabo ? . 



