Mr. D. G. Elliot on the Trochilid^. 311 



NUJVIENIUS PH(EOPUS (L.). 



Three Whimbrels passing over Ust Zylma on the 18th May, 

 were whistled round and induced to alight within fifty yards, 

 when all three were secured. These were the only ones we 

 saw during our trip, though one other was heard calling on 

 the following day. 



Grus cinerea, L. 



Only three Cranes were seen passing to the northward, 

 over Ust Zylma, at a great height — one on the 21st May, and 

 two others on the 25th May. 



[To be continued.] 



XXIX. — Notes on the Trochilidse. The Genera Cyanomyia 

 and Heliotrypha. By D. G. Elliot, F.R.S.E. &c. 



Cyanomyia. 



The genus Cyanomyia, although not remarkable for pos- 

 sessing species resplendent in brilliant metallic colours of 

 many hues, nevertheless contains some sufficiently adorned 

 to excite admiration, while the pure white and glittering blue 

 and green which compose the dress of the various species 

 cannot but afford pleasure to all who see them. It is a genus 

 whose members are restricted to the western portion of South 

 America and Central America, Mexico being its northern 

 limit, and Peru the most southern country from which any 

 specimens have yet been received. The genus contains seven 

 species, some of which, however, cannot be said as yet to be 

 firmly established, or entitled to specific rank, but more as 

 occupying a probationary state, waiting for passports bearing 

 more satisfactory vises than they can at present bear. 



The various species seem naturally to form two groups, 

 viz. those having the underparts of the body pure white, 

 without any metallic colouring, and those having the sides 

 of the neck and flanks covered with metallic feathers of dif- 

 ferent hues. The first of these groups contains three species, 

 two of which, however, may be but local races of the same 

 form ; and the four remaining species comprise the second 



