PLATE VI. 



Psewdalibrotus glacialis, G. 0. Sars. 



Fig. 1. Adult female of the normal form, viewed from left side. 



2. Superior antenna 



3. Inferior antenna. 



4. Anterior lip with epistome, viewed from left side. 



5. Anterior gnathopod. 



6. Posterior gnathopod, with branchial lamella and incubatory plate. 



6a. Same, extremity of propodos, more highly magnified. 



7. Last pereiopod. 



8. Last uropod. 



9. Telson. 



10. Adult female of the variety 'leucopis', viewed from right side. 



11. Anterior extremity of body, with the bases of the antennae, lateral view. 



