Key to the known species (males) of Nototanoides

1. Pleonites with a lateral row of more than 11 simple setae (Fig. 16M–N). .......................................... 2

- Pleonites with a lateral row of less than 11 simple setae (Fig. 16O–P)........................................... 3

2. Cheliped basis lacking mid-ventral process (Fig. 16Q). Cheliped merus with round ventral process (Fig. 16Q).................................................................................................... N. polytrichus

- Cheliped basis with mid-ventral process (Fig. 16R). Cheliped merus lacking round ventral process (Fig. 17R)................................................................................................. N. oliveri sp. nov.

3. Cheliped carpus with mid-ventral process (Fig. 16S). Chela with fixed finger bearing a triangular claw (Fig. 16S)................................................................................................... N. ohtsukai

- Cheliped carpus without mid-ventral process (Fig. 16T). Chela with fixed finger bearing a rounded tooth (Fig. 16T)................................................................................................ N. trifurcatus