COPEPODA 255 



Fig. 8. Chirudina parvispina Farran. 

 Fig. 8 a. fc?. The 2 last segments of the exopodite of the left pes V; x yj. 



Fig. 9. Euchirella bitumida n. sp. 



Fig. 9a. f$. The abdomen etc. in dorsal view; x 24. 



— 9b. f$. The abdomen seen from the left side; x 24. 



— 9 c. f$. The genital somite seen from beneath; x 24. 



— gd. f$. The right maxilla in post, view; x 117. 



— 9e. f^. The labrnm in oral view (anterior portion); x 200. 



— 9 f. f$. The lamina labialis; x 117. 



— 9 g. f$. The area labialis; 77. 



Plate VI. 



Fig. I. Chirudina notacantha G. O. Sars. 

 Fig. I a. f?. Labrum; x 147. 



— lb. f$. L,abiiim ; x 147. 



Fig. 2. Valdiviella insignis Farran. 

 Fig. 2 a. fj. Pes I sin.; outer margin of second and third outer segment in anterior view; x 77. 



— 2 b. f$. Anterior surface of the labrum; x 77. 



— 2 c. f$. Oral surface of the labrum; x 77. 



— 2d. f^. Lamina labialis and serrula 6-dentata; x 77. 



— 2 e. f$. Labial lobes etc.; x 77. 



Fig. 3. Euchcete norvegica Boeck. 



Fig. 3 a. f^. Oral surface of the labrum; x 147. 



— 3 b. f$. Lamina labialis; x 147. 



— 3 c. f$. Labial lobe; x 147. 



— 3d. f<^. Pes V sin.; second and third outer segment; x 77. 



— 3 e. f c?. The oral surrounding in ventral view ; x 147. 



— 3 f. Y (Stage II). Maxilla sin.; x 'jj. 



Fig. 4. Euchcete tonsa Giesbrecht. 

 Fig. 4a. f$. Labrum in oral view; x 147. 



— 4 b. fc?. Pes V sin.; second and third outer segment; x 77. 



Fig. 5. Euchcete glacialis H. J. Hansen. 

 Fig. 5 a. f$. Lamina labialis and serrula 6-dentata; x 147. 



— 5b. f?. Labial lobe in ventral view; x 77. 

 — • 5c. fc?. Maxillula sin.; x 77. 



— 5 d. fc?. Pes V sin.; second and third outer segment; x 77. 



Fig. 6. Euchcete Farrani n. sp. 

 Fig. 6 a. f$. Oral surface of the labrum; x 147. 



Fig. 7. Euchcete Sarsi Farran. 



Fig. 7 a. f$. Labrum in anterior surface; x 57. 



— 7 b. fd*. Pes V sin.; second and third outer segment; x 77. 



