The situation of Halcyon will be between Alcedo and Dacelo; from the last of which it is distinguished by its perfectly straight, acute, and entire upper mandible, which, on the contrary, in Dacelo is notched, the tip bent and obtuse.
HESPERIA Haworthiana.
Haworth's Hesperia.
Generic Character.
Antennæ mediocres vel elongatæ, rectæ, graciles; clava subterminali, brevi, crassata, cylindracea; unco abrupto, brevi, acuminato. Palpi in fronte compressi, incurvati, lateribus convexis vel angulatis, articulo ultimo erecto, verticali. Alæ (sedentes) erectæ.