| Book name (en) | A Monograph of the Trochilidae,or Family of Humming-birds |
| Book volume | Vol.4 |
| Identifier | 4-79 |
| Gould Scientific name | Eriocnemis lugens |
| Scientific name | Haplophaedia lugens |
| Gould name (en) | Hoary Puff-leg |
| Name (en) | Hoary Puffleg |
| Order | APODIFORMES |
| Family | Trochilidae |
