COPEPODA 



255 



Fig. 8. Chirudina parvispina Farran. 

 Fig. 8 a. fo*- The 2 last segments of the exopodite of the left pes V; x 77. 



Fig. 9. Euchirella bitumida n. sp. 



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



— 9b. f<j>. The abdomen seen from the left side; x 24. 



— 9c. f<j>. The genital somite seen from beneath; x 24. 



— 9d. f£. The right maxilla in post, view; x 117. 



— ge. f<j>. The labrum in oral view (anterior portion); x 200. 



— 9! f<j>. The lamina labialis; x 117. 



— 9 g. f£. The area labialis; yy. 



Plate VI. 



Fig. 1. Chirudina notacantha G. O. Sars. 

 Fig. 1 a. f$. Labrum; x 147. 



— ib. f<j>. Labium; x 147. 



Fig. 2. Valdiviella insignis Farran. 

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



— 2 b. f<j>. Anterior surface of the labrum; x 77. 



— 2 c. f 5. Oral surface of the labrum ; x 77. 



— 2d. f<j>. 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<j>. Oral surface of the labrum; x 147. 



— 3 b. f$. Lamina labialis; x 147. 



— 3c. f$. Labial lobe; x 147. 



— 3d. fd*. Pes V sin.; second and third outer segment; x 77. 



— 3 c fo*. The oral surrounding in ventral view; x 147. 



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



Fig. 4. Euchcete tonsa Giesbrecht. 

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



— 4b. fo*. Pes V sin.; second and third outer segment; x yy. 



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. 



— 5 c. f o*. Maxillula sin. ; x 77. 



— 5 d. fo*. 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. fo*. Pes V sin.; second and third outer segment; x 77. 



