| Author | Perkins, R.C.L. |
| Year | 1922 |
| Title | The British Species of Halictus and Sphecodes |
| Type | Paper |
| How Complete | All the British species known at the time |
| Source | Ent. Mon. Mag. 58: 46-52,94-101,167-174. |
| Review (by Malcolm Storey) | Dichotomous keys (with split couplets) to these abundant small and rather similar solitary bees. Species descriptions, as such, are omitted, but confirmatory features are often indicated. Although the taxonomy is old (Lasioglossum is included in Halictus) the keys work reasonably well and are still useful. |
| Errata, Corrigenda & Comments | *Halictus* Group I is comprises the modern *Halictus*. Groups II and III are now referred to *Lasioglossum*. |
| Examine |  Stereo Microscope |
| Specimen Preparation | Pinned and set specimens |
| Identification difficulty | Needs care |
