helonging to the Oenera Euphemsa and Cyanomyia. 267 



This species is most nearly allied to Eupherusa egregia^ but 

 can at once be distinguished from it, as well as all the other 

 members of the genus, by its tail. In egregia the four central 

 tail-feathers are black, and the remainder are black at the tips ; 

 in the present species only the two median feathers are bronzy, 

 all the remainder being as described above. This bird, together 

 with the following, was obtained in a small collection of birds 

 procured at Putla in the western part of Mexico. This is the 

 third species now known of the genus Euplierusa^ which for a 

 long time was only represented by E. eximia. Tlie species 

 are as follows : — 



1. Eupherusa eximia. Guatemala. 



2. E. egregia. Veragua. 



3. E. poliocerca. Putla, Western Mexico. 



Two species, named respectively E. cupreiceps and E. nigri- 

 ventris, have been allotted to this genus ; but I think that 

 they will hereafter be assigned to another genus {Thaumatias) j 

 to which they seem more naturally to belong. 



Cyanomyia viridijrons. 



Forehead and lines over the eyes dark green, metallic in 

 some lights and rather brilliant towards the nape ; centre of 

 crown dark grey ; upper part of back and shoulders brilliant 

 light green ; lower part of back bronzy brown. Wings purple. 

 Upper tail-coverts and tail rich coppery bronze. Flanks grass- 

 green. Entire under parts pure white. Bill reddish, black at 

 tip. Total length 3| inches ; wing 2g inches, tail 1| inch, 

 bill f inch. 



Hah. Putla, Mexico. 



The present bird differs from all the members of this genus 

 by its peculiarly coloured head and tail, which do not in any 

 way resemble any other species of Cyanomyia at present known. 

 It is perhaps nearest in its relationship to the C. vioUceps, being 

 about the same size as that species ; but there is no trace what- 

 ever of the beautiful violet crown of that bird, and the tail is 

 also quite diiFerent. It is also from Putla, where the species 

 appears to be not uncommon. The present makes the seventh 

 species of this genus now known ; they are : — 



1. Cyanomyia quadricolor. Northern Mexico. 



2. C. violiceps. Western Mexico, vicinity of Oaxaca. 



3. C. cyanocephaliis. Southern Mexico. 



4. G. Francice. New Granada. 



5. C. guatemalensis. Guatemala. 



6. C. cyanicollis. Peru. 



7. G. viridijrons. Putla, Western Mexico. 



