50 
Birds of British Guiana. 
Saljre-wing Hiiniming Bird 
*fRe(Jd'sh Humming- Bird 
Jacobin (or while-napcdj Humming 
Bird (honey-cater) 
Emerald 
fWhite-vented Pilgrim (beggarj 
Ultra-green Pilgrim 
♦fSpotted-tailed 
*Bright-tailcd 
f Copper-tailed Dainty 
*Cireen-vented Wood-beauty 
Red-throated Sapphire 
Blue-chinned Sapphire 
*f Forked-tailed golden dwarf (Mt. 
Roraima) 
f Festive Fork-tail Wood-Nymph 
fWaterton's Humming Bird 
*tEar-tufted Humming Bird (Alt. 
Roraima) Shade bearer 
Dolphin Ear-tufted Mumming B-'rd 
Fiery-tailed Avocet 
fViolet-tailed Torch Humming Bird 
Green-throated Torch Humming 
Bird 
fGold-shining Mosquito Humming 
Bird 
t Emerald Teresa Greentail 
t Graceful Wonder 
King Topaz 
f Yellow-bre.isted golden-glory 
Golden Long-ear 
Tuft-crested Coquette 
fRocket-tailed Quoit 
Caiiipyloptcnis lurgipeiuiis. 
,, Itypcrythnis. 
I'orisitga mcUivora. 
Agyrtria wliitclyi. 
Icucogastcr. 
,, viridissUna. 
., macuUcauda. 
nitidicaiida. 
Siiiiccrottca ciiprcicanda. 
Hylocliaris viridivcntris. 
sappirina. 
Chlorcstcs cocruleus. 
Chliiroslilboii siibfitrcatus. 
T lialnrania juvcata. 
Kjatcrlum. 
I'ctasupliora genua na. 
delphiiiac. 
Avocctlicla rccun'irostris. 
Laiupuniis I'ioUcaitda. 
gramiveus. 
Clirysolampis mosqitUiis . 
FsUoniyctcr tlicresiac. 
Polytmiis thaumantias. 
Topasa pcUa. 
HcViodoxa xantliogcnys. 
H cUothrix aiirita. 
Lophornh orimtus. 
Disciira lunuicauda. 
SWIFTS. 
The reseml^lance of Swifts to Swallows is only superlicial. 
Anatomically, the difference is fundamental, and Swifts have 
been finally placed in the same sub-order as Humming Birds. 
They are emphatically birds of the air, performing" all their func- 
tions on the wing and never resting except to roost. Like Hum- 
ming Iiirds they liave enormotis keels l)earing the powerful 
nuiscles that sustain them in their continual flight. Their 
feet, unlike all other birds, except a few Night-jars are 
generally pamprodactyloits . that is, all four toes are in front. 
