FEEDING, LOCOMOTION AND RESPIRATION 2Q 



Fig. 20. Feeding and swimming currents produced by 

 Hemimysis lamornae (Mysidacea). A, Dorsal view show- 

 ing the currents produced as the animal swims through 

 the water. Note the large backwardly directed loco- 

 motory current, the smaller current down to the bases of 

 the legs, the inhalent respiratory current under the hind 

 edge of the carapace, and the exhalent respiratory 

 current coming up behind the eyes. B, Diagram of a 

 transverse section of one thoracic segment and its legs 

 showing the vortex produced by rotation of the exopodite 

 and the water entering the median food groove. The 

 endopodite of each leg has been omitted. (After Cannon 

 and Manton, 1927). 



