CIRCE LATIROSTRIS. 



Circe. 



Cynanthus latirostris, Swains, in Phil. Mag. 1827, p. 441. 

 Trochilus Circe, Bourc. 



Sapphironia circe, Bonap. Rev. et Mag. de Zool. 1854, p. 256. 

 Trochilus Schimperi, Sauc. MSS. — Reich. Aufz. der Col. Ind., p. 21. 



A very common species, the synonymy of which has much perplexed me : on the Continent it is very 

 generally known by the name of Circe, a term applied to it by M. Bourcier : my friend Saucerotte has also 

 given the name of Schimperi to it in his MSS M an appellation which has unhappily found its way into our 

 scientific lists of Humming-birds; I say unhappily, because both Schimperi and Circe must give place to 

 Swainson's older name of latirostris ; but what could have induced this latter author to place the bird in 

 the genus Cynanthus, I cannot imagine. The following is his description, which I give in his own words, 

 in order that those Trochilidists who may not have the " Philosophical Magazine " at hand may satisfy 

 themselves as to its identity. I may mention that the original of Swainson's description still exists, and 

 is in the possession of John Taylor, Esq. 



"Green, beneath bluish; chin and throat sapphire-blue; tail moderate, slightly forked, bluish-black; 

 base of the bill depressed, red. 



"Total length, 3^; bill, 1; wings, 2^; tail (outer feathers), 1-nr." 



I have tried to find a place for this bird in one or other of the already established genera of this great 

 group of birds, but the search not having been attended with a satisfactory result, I have been induced to 

 change M. Bourcier's name of Circe into a generic appellation, and to retain Swainson's term of latirostris 

 as its specific designation. 



The high table-lands of Mexico would appear to be the native habitat of this species, since it is from 

 thence alone that I have received specimens. These, as well as most of the others dispersed in European 

 collections, were procured by the late Signor Floresi. 



The sexes, as will be seen on reference to the accompanying Plate, differ very considerably, the under 

 surface of the female being brownish vinous-grey, while the male has the same part sapphire-blue and 

 golden-green. 



The male has the head, all the upper surface, wing- and tail-coverts, and under surface of the body 

 shining golden-green, with a tinge of blue on the abdomen ; chin and throat sapphire-blue ; tail steel-blue, 

 all but the two outer feathers on each side tipped with grey ; under tail-coverts white ; bill red at the base, 



black at the tip. 



The young male is less brilliantly coloured, and has the under surface brownish-grey, with a few of the 



sapphire-blue feathers on the centre of the throat. 



The female has the colouring of the upper surface, wings and tail similar to that of the male ; under 

 surface uniform brownish or vinous-grey ; two centre tail-feathers bronzy-green ; the three next on each 

 side bronzy-green at the base, then black, and tipped with grey ; the outer one grey at the base, then black, 

 and tipped with greyish-white. 



The Plate represents the birds of the natural size. 



