Mr. D. G. Elliot on the Trochilidae. 
311 
-ANuMENIUS PHCEOPUS (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. 
Grits 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 he continued.] 
XXIX .—Notes on the Trochilidae. 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 
