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Key to the British species of Nannastacidae<br />
1- Molar process of mandible styliform, pointed. Anterolateral angle of carapace absent or<br />
only slightly prominent 2<br />
Molar process of mandibles thick and truncate. Carapace of female with well developed<br />
anterolateral angle. 15<br />
2- Maxilla 2 with one lobe; maxilliped 2 with the dactyl shaped like a rake; pereopod 1 with<br />
ischium long; eyelobe extending almost to the end of the pseudorostrum<br />
Procampylaspis armata+<br />
Maxilla 2 rudimentary, without lobes; maxilliped 2 dactyl normal; pereopod 1 with ischium<br />
not specially long (Campylaspis) 3<br />
3- Carapace smooth without tubercles, spines, ridges or lateral grooves 4<br />
Carapace with tubercles, spines or ridges or at least a shallow lateral groove<br />
6<br />
4- Eyelobe small and rudimentary Campylaspis alba<br />
Eyelobe of normal size 5<br />
40
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