38 
Mr. D. G. Elliot on the Trochilidae. 
remaining ones have inner webs, 
except tips, black, outer webs metallic 
golden green; all lateral feathers tipped 
with bright metallic golden green .... 10. nitidieauda ? 
3. Central pair of rectrices bronze-green, 
lateral ones white, apical portion black . 11. T. chionurus. 
h'. Under tail-coverts white, with central brown 
or green streaks. 
1. Median rectrices, except tips, and the 
basal portion of the others briglit 
green; central part of lateral ones black¬ 
ish, tips grej. Throat and breast shining 
grass-green. 12. T. tephrocephalus. 
2. Median rectrices bronze-green, remainder 
black, with pale tips. Throat and 
breast golden green. 13. T. tohaci. 
3. Tail black. Throat and breast grass-green, 
with a slight bluish tinge. 14. T. Jluviatilis. 
4. Median rectrices green, tipped with black, 
rest black, tipped with white. Throat 
and breast bright golden green . 15. T. apicalis. 
5. Median rectrices green, tipped with 
black, next one on either side bronze- 
green two thirds their length, rest black; 
remaining feathers green at base, then 
black, with a metallic green spot on the 
tip, which graduates into white on its 
upper edge. 16. T. maculicauda. 
6. Tail bronze-green, lateral feathers with a 
subterminal purplish bronze bar, tips 
ashy grey. Throat and breast glitter¬ 
ing bluish green.. 17. T. lucice. 
c'. Under tail-coverts grey, with a central line 
of bronze-green. 
1. Crown of head and face glittering green. . 18. T. nitidifrons. 
2. Crown of head and back of neck shining 
greenish blue. 19. 71 cceruleiceps. 
C. Throat and upper part of breast blue. 
a. Tail pale greenish bronze, with a subterminal 
blackish bar . 20. T. neglectus. 
b. Tail steel-black . 21. T. hartletti. 
The members of this genus have a rather extensive geo¬ 
graphical dispersion, ranging from and including Mexico 
in the north, through Central America, down the Andes of 
South America as far as Bolivia, and along the northern side 
