CHL0R08TILB0N STUEBELI, Mei/er. 



Stiibel's Emerald. 



Chlorostilbon shibeliiy Meyer, in Madarasz, Zeitschr. ges. Orn. i. p. 206 (1884). 



This species, which we have not seen, was discovered by Dr. Stiibel in the province of Yungas, in Bolivia. 

 It is described by Dr. Meyer, as follows: — ''Upper surface bronzy green; head coppery; below golden 

 green, the breast bluish ; wings purplish brown ; tail black, tinged with violet-purple ; bill black. Total 

 length 3-1 inches, wing 1*9, tail 1*0, bill 0-7." 



Dr. Meyer has sent us the following translation of his original article : — 



"Dr. Stiibel procured the specimeu described, on the 15th of December, 1876, when descending from the 

 village Yumata (2200 metres) to the Rio Tanampaya (1200 metres). 



"Besides the type specimen. Dr. Stiibel got from the same spot another specimen, which appears to be 

 rather young, the bronze glow being less conspicuous. I have named the species in honour of its discoverer. 



" Besides these two examples, the Dresden Museum possesses a similar specimen without any exact habitat ; 

 but the colour of the tail is rather faint and deeper black, and some grey terminal spots appear to prove a 

 still younger stage of plumage, 



"These birds belong to the section of the genus Chlorostilbon, which Elliot separated as a group, with 

 black bills (see Syn. Troch. p. 243). This author enumerates three species, C. angustipennis, C. atala, and 

 C. prasims ; but C. stuebelii cannot be referred to any one of these, on account of the form of its tail, not to 

 mention the colour; it cannot be referred to C. angmtipenms, as the tail of this species is forked and much 

 longer; nor to C. atala, the tail of which is emarginated and bluish black; nor to C, prosinus, the tail of 

 which is short, straight, and bluish black. The form of the tail of C. stuebelii is slightly emarginated, the 

 rectrices being rather broad. In consideration of the high and isolated habitat, I do not doubt that C. stuebelii 

 is a good species, the more so as C. atala, which it resembles in certain characters, only occurs on Trinidad. 



"I remarked, en passant, that some specimens oi C. angmtipennis (Fras,), in the Dresden Museum, have 

 not a totally black bill, as this is lighter at the base of the mandibles. Elliot (/. c. p. 246) says that the 

 black bill is the siitgle character to be relied on for distinguishing C. angustipennis, together with the forked 

 tail ; but, according to what I have here stated, this character is not to be fully relied on." 



[R. B. S.] 



