PLATE VI. 



Fig. 1. Pontocrates arenarlus (Bate), p. 68, first gnathopod. 

 '2. ,, second gnathopod. 



3. ,, second gnathopod extremity, more 



magnified. 



4. ,, ,, basal joints of last perseopod. 



5. Pontocrates norveyieus, Boeck, p. 68, first gnathopod. 



6. ,, ,, second gnathopod. 



7. ,, ,, second gnathopod extremity, more 



magnified. 



8. ,, ,, "basal joints last peneopod. 



