NOMADA. 
249 
The only flower which it has been noticed that they 
frequent is the Viper’s Bugloss (Echiurn vulgare). 
Subsection 2. Nttdipedes (nakecl-legged Cuckoo Bees), 
a. With three submarginal cells to the wings. 
Genus 14. NOMADA, Fabricius. 
(Plates VIII., IX., X.) 
Gen. Char.: Head transverse; ocelli in a triangle on 
the vertex; antennae filiform, scarcely geniculated, the 
scape short, the basal joint of the flagellum subglobose, 
the second joint clavate, the remainder subequal; face 
flat, or slightly concave, carinated longitudinally in the 
centre between the insertion of the antennae; clypeus 
subtriangular, convex, deflected at the lateral angles; 
labrum subcircular, very gibbous and protuberant; 
mandibles acute or subbidentate; tongue long, acute; 
paraglossae about one-fourth its length, acute; labial 
palpi two-thirds the length of the tongue, the two basal 
joints membranous, the basal one as long as the rest 
united, and tapering to its extremity, the second joint 
less than half the length of the first, and not wider at 
its base than the apex of the first joint, and tapering 
like that to its end, where it is acute, the third joint 
short, subclavate, and the terminal one half the length 
of the preceding, very slender and linear; labium about 
one-lialf the length of the tongue, and at its inosculation 
produced obtusely in the centre; maxillae subhastate, 
about the length of the tongue; maxillary palpi six- 
jointed, the basal joint short, robust, subclavate, the 
second the longest, and with the rest tapering in sub¬ 
stance and diminishing in length to the extremity, the 
