Key to the genera of Terebellidae found in Lizard Island

1. Lobes on anterior segments absent, except sometimes for a ventral lobe on segment 1, around the mouth............... 2

- Lobes on anterior segments present....................................................................... 3

2. (1) Distally winged notochaetae........................................................................ Nicolea

- Distally serrated notochaetae..................................................................... Terebella

3. (1) Notopodia beginning from segment 4...................................................................... 4

- Notopodia beginning from segment 5............................................................ Reteterebella

4. (3) Long-handled uncini present at least in first pairs of neuropodia................................................. 5

- Short-handled uncini throughout.......................................................................... 6

5. (4) Only winged, laterally smooth notochaetae present........................................................ Pista

- Medially winged and distally serrated notochaetae also present.......................................... Lanicides

6. (4) Branchiae present, 1–3 pairs, beginning from segment 2....................................................... 7

- Branchiae absent.......................................................................... Lizardia n. gen.

7. (6) Two or three pairs of arborescent branchiae................................................................. 8

- Single pair of plumous branchiae, on segment 2........................................................ Pistella

8. (7) Double rows of uncini in an intercalated arrangement......................................................... 9

- Double rows of uncini in a back to back arrangement........................................................ 10

9. (8) Three pairs of branchiae, on segments 2–4; lobes on segments 1–4, ventral on segment 1, ventro-lateral on segment 2 and pro- gressively more laterally placed on segments 3 and 4................................................ Eupolymnia

- Two pairs of branchiae, on segments 2–3; ventral lobe on segment 1 and lateral lobes on segment 3, inserted dorsally on seg- ment 3 and ventrally on segment 2.................................................................. Lanicola

10. (8) Pectinate uncini.................................................................................. Loimia

- Uncini with several transverse rows of secondary teeth................................................... Lanice