412 Annals of the Carnegie Museum. 



The proper application of Lafresnaye's name Thriothorus leucotis 

 (Revue Zoologique, 1845, 338) was l° n g a matter of conjecture. The 

 type, while included with the others of that author in the collection 

 of the Museum of Comparative Zoology, has not actually turned up 

 until very recently, so Mr. Bangs informs us. Sclater (Proceedings 

 Zoological Society of London, 1870, 328) identified the species in 

 question with the Thryothorus galbraithii of Lawrence, described from 

 Panama, and Dr. Oberholser (Proceedings U. S. National Museum, 

 XXV, 1902, 67) indorsed this view, but apparently without having 

 examined Colombian specimens. Mr. Hellmayr (V crhandlungen der 

 k. k. zodlogische-botanischcn Gcsellschaft in Wien, 1901, 768) was the 

 first author to correctly apply the name and to present a full and diag- 

 nostic description. While carefully distinguishing leucotis from re- 

 lated forms, he at the same time makes galbraithii conspecific with 

 albipectus, ignoring the close affinity existing between leucotis and gal- 

 braithii. The present series, which correspond very closely both with 

 Lafresnaye's original description and with the later one by Mr. Hell- 

 mayr, have been compared with the type and a considerable series of 

 galbraithii. The latter is much more rufescent below, but even the 

 palest specimens are darker than the Colombian birds here recorded. 

 The differences are only of subspecific value in the judgment of the 

 writer, and the two forms should stand as Thryophilus leucotis leucotis 

 and T. leucotis galbraithii. The type of Thryophilus pallescens Ridg- 

 way (Bulletin U. S. National Museum, No. 50, III, 1904, 624), which 

 has been examined in the present connection, proves to be nothing 

 more or less than an example of the former race. It may well be 

 doubted if it occurs as far inland as Bogota, as it seems to be relatively 

 a lowland if not a littoral form. 



This wren takes the place of the preceding species on the west side. 

 It was taken and seen only at Fundacion and Tucurinca, where it is 

 found along the lower edges of the foothills rather than on the alluvial 

 plain. It frequents tangled undergrowth and masses of vines, where 

 it is fairly abundant, and much in evidence, being rather noisy as a 

 rule, and having a pleasing song of several low liquid notes. Mr. 

 Smith sent in a single juvenal example from Bonda (October 6). 

 All but one of the specimens secured by the writer are more or less 

 worn and faded. 



