Various Notes on Humming- Birds. 423 



XXXII. — Various Notes on Humming -Birds. 

 By Ernst Hartert. 



Genus Glaucis. 

 -•" Glaucis hirsuta is a very variable and therefore somewhat 

 troublesome species. The sexes differ in size, but very 

 slightly in colour. The young birds have narrower and 

 much more pointed rectrices. There may possibhj be some 

 subspeci fie forms, but the materials available in our museums 

 at present (and I have seen the specimens in the British 

 Museum, in Count Berlepsch's and Boucard's collections, and 

 in that of Mons. Simon and at Tring) do not, in my opinion, 

 enable us to separate them. Boucard (Gen. H. B. p. 363) has 

 kept as distinct species G. mazeppa, lanceolata, and melanura, 

 but I quite agree with Salvin and Simon that none of these 

 can be upheld. The characters given by Boucard to distin- 

 guish G. lanceolata are exactly those of a young bird, as 

 rightly given by the same author under his generic characters. 

 On p. 364 Boucard describes as new species G. rojasi from 

 Caracas and G. rorahnce from Mt. Roraima. All the skins 

 of G. I'oraimcB seem to be immature individuals and not to 

 differ from immature G. hirsuta of other countries. G. rojasi 

 is exactly like G. roraima : I shall therefore place both 

 names among the already numerous synonyms of G. hirsuta. 

 On p. 402, Boucard described Glands columbiana, u. sp., 

 from Bio Dagua, in W. Colombia. This bird is very small 

 and characterized by a uniform cinnamon under surface, and 

 may possibly be specifically distinct. Its wing measures 

 53 mm. As, however, the specimens are not quite adult, 

 this must remain an open question at present. 



The type of Khamphodon chrysurus, Count Berlepsch 

 informs me, is not in the Dresden INluseum; it is therefore 

 advisable to quote this name ivith a query among the 

 synonyms of Glaucis dolirni, to which it seems to belong. 



Genus PHAliTHORNIS. 



Although less uniform in structure than many other 

 genera, this genus can always easily be recognized ; but the 



