ARINIA BOV CARD I, Muisant 



Boucard's Emerald. 



Jrinia boucardi, Miilsant, Ann. Soc. Linn. Lyon, 1877.— Elliot, Synopsis of the Humming. 



Birds, p. 209 (1878). 

 Jrena boucardi, Mulsant, Hist. Nat. Oiseaux-Mouches, iv. p. 194 (1878). 

 Sapphironia boucardi, Boucard, Proc. Zool. Soc. 1878, p. 71. 



This Htimminir-bird was discovered by M. Boucard at Pmifareiias, in Costa Rica, in May 1877, and 

 specimens of both sexes procured. It was described by the late M. Mulsant in the same year, and of it 

 Mr. Elliot gives the following- account and description : — 



" But one species is known, brought from Costa Rica by M. Boucard. It is very close to the genus 

 Agyrtria, and were the male alone known, the propriety of separating it from that genus might possibly 

 he questioned; but as the female is quite different in the colouring of her plumage from the male, while 

 the sexes o^ Agyrtria do not differ in their dress, it would seem to be best to allow the present species a 

 distinct generic raid<. This genus connects Agyrtria with Elvira. 



''Male. Upper surface and flanks bronze-green, darkest on the head. Tliroat and breast shinino- bluish 

 green. Abdomen and under tail-coverts pure white. Median pair of rectrices dark bronze-green, next 

 bronze-green with black tip, remaiinng lateral feather bronze-green at base, rest black, the bronze-green 

 decreasing in extent as it goes towards the external feather. All the lateral feathers edged with white at 

 their tips. Maxilla black; mandible flesh-colour ; tip black. Feet black. Total length Sit inches, wing 2, 

 tail Ire, culmen ii. 



'\ Female. Differs in having the middle of the throat, breast, and underparts pure white. Median 



rectrices bronzy green ; lateral feathers green at base, tlien black and tipped with grey. Rest like tfie 



male.'* 



[R. B. S.] 



