LIST OF PLATES. 



(With corrections). 



The following are the chief signs on the figures, with their signification: 



? female; </ male; C. cephalon; R. rostrum; T. tail; gen. reg. genital region; F. furca 



or caudal rami; a 1 anterior antenna; a- posterior antenna; or. area oral area; 5. siphonal tube; 



M. mandible; Mp. mandibular palp; m. maxilla; mp. 1 anterior maxilliped; tup.- posterior rnaxil- 



liped; p 1 p'. legs of 1st to 5th pairs. 



PI. I. 

 Oithona spinirostris, Glaus. 



PI. II. 

 Oithona spinirostris (continued). 



PI. III. 

 Oithona similis, Glaus (see p. 207). 



PI. IV. 

 Cyclopina gracilis, Glaus. 



PI. V. 

 Cyclopina longicornis, Boeck. 



PI. VI. 



Cyclopina Schneider!, Scott (see p. 209). 



PI. VII. 

 Cyclopina elegans, Scott. 



PI. VIII. 

 Cyclopinella tumidula, G. O. Sars. 



PI. IX. 

 Cyclopetta difficilis, G. O. Sars. 



PI. X. 

 Pterinopsyllus insignis, Brady. 



PI. XI. 



Pterinopsyllus insignis (male). 



PI. XII. 



Euryte longicauda, Philippi. 



PI. XIII. 

 Euryte robusta, Giesbrecht. 



PI. XIV. 

 Euryte curticornis, G. O. Sars. 



PI. XV. 

 Halicyclops magniceps (Lilljeborg). 



PI. XVI. 

 Cyclops pictus, Koch (see p. 211). 



PI. XVII. 

 Cyclops abyssorum, G. O. Sars. 



PI. XVIII. 

 Cyclops lacustris, G. O. Sars. 



PI. XIX. 

 Cyclops scutifer, G. O. Sars. 



PI. XX. 



Cyclops vicinus, Ujanin. 



PI. XXI. 

 Cyclops insignis, Glaus. 



PI. XXII. 

 Cyclops vulgaris, Koch. 



