PLATE XLVI. 



Fig. 1. Calanus gracilis, Dana. 

 Fig. 1. Outer branch of the first swimming foot. 



Figs. 2-4. Hemicalanus aculeatus, n. sp. 

 Fig. 2. Female (?), seen from above; magnified L6 diameters. 

 Fig. 3. Maxilla. 

 Fig. 4. Foot of second pair. 



Figs. 5-6. Cory cans speciosus, Dana. 

 Fig. 5. Adult, seen from above. 

 Fig. 6. Adult, seen from right side ; both magnified 40 diameters. 



Figs. 7-9. Corycceus obtusvs, Dana. 

 Fig. 7. Adult, seen from left side ; magnified 80 diameters. 

 Fig. 8. Anterior antenna. 

 Fig. 9. Posterior antenna. 



