254 



COPEPODA 



Plate V. 



Fig. i. Undeuchcete superba n. sp. 

 Fig. i a. The abdomen in right view; x i3'5- 



— i b. The left lateral corner of last thoracic somite; x 44. 



— 1 c. Area labialis in ventral view ; x 77. 



Fig. 2. Undeuchcete major Giesbrecht. 

 Fig. 2 a. The labrum in oral view; x 200. 



— 2 b. The lamina labialis; x 200. 



— 2c. fo*. The endopodite of the right pes V in anterior and interior view; x 77. 



— 2d. fj\ The Re III of left pes V; x 77. 



Fig. 3. Undeuchcete minor Giesbrecht. 



Fig. 3 a. f£. The genital area from beneath; x 77. 



— 3b. fj 1 . The pes V in anterior view; x 33. 



— 3 c. f o*. The endopodite and the exopodite of the right pes V in anterior and interior view; x 77. 



— 3d. fo*. The exopodite of the right pes V; x 24. 



— 3 e. f o*. The endopodite of the right pes V; x 24. 



— 3L fd\ The Re II— III of the left pes V; x 117. 



— 3g. fo*. The Re II of the left pes V; x 117. 



Fig. 4. Chirudina streetsi Giesbrecht. 



Fig. 4 a. f£. The genital area from beneath; x Jj. 



— 4b. f£. The labrum in oral view; x 200. 



— 4 c. f£. The lamina labialis etc.; x 200. 



— 4d. f £. The area labialis; x jj. 



— 4 e. to*. The pes V in posterior view; x 32. 



— 4! f J\ The 2 last segments of the left pes V in anterior and interior view; x 98. 



Fig. 5. Chirudina abyssalis n. sp. 



Fig. 5 a. f£. The abdomen seen from the left; x 24. 



— 5 b. f$. The left mandibula in ant. view; x 44. 



— 5 c. f5f>. The left maxilla in post, view; x 44. 



— 5 d. f$. The marginal teeth of the second basipodite of left pes IV in posterior view; x 117. 



— 5 e. f£. The lamina labialis etc.; x 77. 



— 5 f . f$. The area labialis; x 77. 



Fig. 6. Chirudina pustulifera G. O. Sars. 

 Fig. 6a. f$. The abdomen in dorsal view; x 24. 



— 6b. f£. The first abdominal somite in lateral view; x 24. 



— 6 c. f£. The genital area seen from beneath; x Jj. 



— 6 d. f£. The labrum in oral view (anterior portion); x 200. 



Fig. 7. Chirudina notacantha G. O. Sars. 

 Fig. 7 a. f J*. The 2 last segments of the exopodite of the left pes V; x 77. 



— 7 b. fc?. The last segment of the exopodite of the left pes V from another specimen in a some- 



what different position; x 77. 



