

25° 



COPEPODA 



Fig. 5. Eucalanus elongatus Dana. 



Fig. 5 a. f $. The oral surface of the labrum ; x 200. 



— 5 b. f $. The lamina labialis etc. ; x 200. 



— 5 c. f o*. The fifth pair of legs in anterior view; x 65. 



— 5 d. Y(? (V). The fifth pair of legs of an abnormal male; x 65. 



— 5 c Yc? (V). The fifth foot in ant. view ; x 65. 



— 5f. Yo* (V). The fifth foot in ant. view; x 65. 



Fig. 6. Eucalanus attenuatus Dana. 

 Fig. 6 a. Y °. (V). The oral surface of the labrum ; x 200. 



— 6 b. Y $ (V). Lamina labialis ; x 200. 



— 6c. Yo* (V). The fifth foot in post, view; x 77. 



Fig. 7. Eucalanus crassus Giesbrecht. 

 Fig. 7 a. f <j>. The coecal sac; x 44. 



Fig. 8. Pseudocalanus minutus Kroyer. 

 Fig. 8 a. f <j>. The oral surface of the labrum ; x 280. 



Fig. 9. Clausocalanus arcuiformis Dana. 

 Fig. 9 a. f °.. The head etc. from the left ; x 77. 



— 9b. f $. The genital somite from the left; x 77. 



— 9 c. f 5. The oral surface of the labrum ; x 260. 



— 9 d. f °.. The lamina labialis etc. ; x 260. 



Fig. 10. Spinocalanus abyssalis Giesbrecht. 

 Fig. 10 a. f <j>. The oral surface of the labrum ; x 260. 



— 10 b. f <j>. The lamina labialis etc.; x 260. 



Plate II. 



Fig. 1. Aetidius armatus Boeck. 

 Fig. 1 a. f $. First abdominal somite from the left; x 152. 



— r b. f<j?. First abdominal somite from below; x 152. 



— 1 c. f <j>. Basipodite of pes IV sin. in posterior view; x 152. 



— 1 d. f£. Lamina labialis etc.; x 280. 



Fig. 2. Chiridius obtusifrons G. O. Sars. 

 Fig. 2 a. f<j>. The labial structures ; x 280. 



— 2 b. Yo*(V). Pes V; x 77. 



Fig. 3. Chiridius armatus Boeck. 

 Fig. 3 a. f<j>. Pes II sin. anterior view; x 77. 



— 3 b. f£. Labrum — oral view. g 2 —g* the second and fourth groups of the lateral longitudinal series. 



S4 the fourth central circular spot; x 200. 



— 3 c. f<j>. Lamina labialis and serrulae 6-dentatae; x 280. 



— 3d. f$. Area labialis et postlabialis ; x 147. 



— 3 e. fo*. Pes V sin; the endopodite; x 280. 





