EXPLANATION OF PLATES. 119 



Plate XL 

 DiAPTOMus Castor. 



Fig. 1. Female seen from above X 40. 



2. Last three joints of right anterior antenna of male. 



3. Distal end of basal joint of posterior raaxilliped. 

 i. Foot of fifth pair of female. 



5. ,, ,, of male. 



6. ,, ,, extremityof left outer branch, more highly magnified. 



DiAPTOMUS GRACILIS. 



7. Abdomen and posterior thoracic angles (Wanstead Park). 



8. Basal joint of posterior maxilliped. 



9. Fifth pair of feet of male (Talkin Tarn). 



a. Setiferous papilla. 



Plate XII. 



DiAPTOMUS GRACILIS. 



Fig. 1. Female seen from above x 80 (Couiston). 



2. Last three joints of right anterior antenna of male (Floutern Tarn). 



3. ,, „ „ (Talkin Tarn). 



4. ,, ,, ,, (Lough Neagh& Wanstead Park). 



5. Fifth pair of feet of female (Wanstead Park). 



6. ,, ,, of female (Talkin Tarn). 



7. ,, ,, of male (Wanstead Park). 



8. Last thoracic segment and abdomen of male. 



Plate XIII. 



EURYTEMORA ClAUSU. 



Fig. 1. Female seen from above x 55. 



2. Apical joints of right anterior antenna of male, 



3. Foot of fifth pair of male — left. 



4. „ „ ,, —right. 



5. ,, ,, of female. 



EuRYTEMORA AFFINIS. 



6. Female seen from left side x 55. 



7. Abdomen and last thoracic segment of female. 



8. Fitth pair of feet of male. 



9. Foot of fifth pair of female. 



