Chapter XII: Section 1: Solitary

Subsection 1. SCOPULIPEDES (brush-legged).

a. _Femoriferæ_ (collectors on the entire leg).

† _With two submarginal cells._

Genus 9. PANURGUS.

b. _Cruriferæ_ (collectors on the shank only).

† _With two submarginal cells._

Genus 10. EUCERA.

†† _With three submarginal cells._

Genus 11. ANTHOPHORA.

12. SAROPODA.

13. CERATINA.

Subsection 2. NUDIPEDES (naked-legged).

a. _With three submarginal cells._

Genus 14. NOMADA.

15. MELECTA.

16. EPEOLUS.

b. _With two submarginal cells._

Genus 17. STELIS

18. CŒLIOXYS.

Subsection 3. DASYGASTERS (hairy-bellied).

_All with two submarginal cells._

Genus 19. MEGACHILE.

20. ANTHIDIUM.

21. CHELOSTOMA.

22. HERIADES.

23. ANTHOCOPA.

24. OSMIA.