PLATE XLYI. 



Fig. 1. Calami s gracilis, Dana. 

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



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

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

 Fig;. 3. Maxilla. 

 Fig. 4. Foot of second pair. 



Figs. 5-6. Corycceus speciosus, Dana. 

 Fig. 5. Adult, seen from above. 

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



Figs. 7-9. Corycceus obtusus, Dana. 

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

 Fie. 8. Anterior antenna. 



O 



Fig. 9. Posterior antenna. 



