
 
        
         
		PHÆOPT1LA  SORBIBA,  Could. 
 PHÆOPTILA  SORDID A,  Gould. 
 Dusky  Humming-Bird. 
 Cyanomyia ?  sordida, Gould, Ann.  and Mag. o f Nat.  Hist., 3rd  ser. vol.  iv. 1859,  p. 97. 
   sordida,  Sclat.  in  Proc. o f Zool.  Soc.,  p a rt xxvii.  p.  386. 
 Uranomitra sordida,  Cab.  Mus.  Hein., Theil  iii. p.  41,  note. 
 Of this  dull-coloured  and  sombre-looking Humming-Bird  I have  seen  three  examples,  all  of which  I am  
 sure  are adult,  and  so  much  alike  that  they present  no variation  in colour;  it  is  probable  therefore  that  
 the sexes are  precisely  similar  except  in size,  in which point they appear to differ.  The  native  country of  
 this species is  the western side of Oaxaca in Mexico, whence  they were  received  by M.  Salle  of Paris.  At  
 first  I  considered  the  natural  position  of  this  bird  to  be  among  the  Cyanomyice, and  I  accordingly  described  
 it under that generic title;  but  on reflection I have deemed it advisable to make  it the type of a new  
 genus,  a  step I am  the  more  disposed  to  take  from  the  circumstance of  there  being,  I believe, a  second  
 species of this form from Bolanos  in  the Loddigesian collection. 
 In many species of Humming-Bird tufts  of white feathers occupy the sides  of the back,  which white tufts  
 fall gracefully over  the  crossed wing when  the  bird  is  alive  and  sitting  on  the  branch of  a  tree;  in  the  
 present species  this character  is more  than  usually  conspicuous,  as will  be  seen  on reference  to  the accompanying  
 Plate. 
 The male has the head and under surface greyish  brown;  behind  the  eye  a spot of white ;  all  the upper  
 surface and the sides of the neck  dull  bronzy green;  on each side of  the  back  a conspicuous  tuft of white;  
 wings purplish brown ;  tail dark  greenish  bronze,  approaching  to  black on  the  base  of  the  under surface;  
 under tail-coverts  very pale brown with  lighter  edges;  bill flesh-colour for seven-eighths from  the  base  and  
 dark at the tip. 
 The female  is  similar, but paler iu colour. 
 The figures  are  of the natural  size.  The plant is  the  Echinocactus visnagra.