III. 2 



FEEDING 



53 



Fig. 25. Feeding-currents on proboscis of Glossobalanus, shown by placing the animal 



in water containing carmine particles. The particles (gra.) are either taken directly into 



the mouth (?«.) as at w., or are caught up in strands of mucus (sec.) and passed backwards. 



(From Barrington, Quart. J. Micr. Set. 82, by permission.) 



Fig. 26. Transverse section of the pharynx of Glossobalanus. 



cil. cilia of the gill bars; dc. dorsal chamber of pharynx; es. epibranchial strip; gp. gill pore; 

 VC. ventral chamber of pharynx. (From Barrington. With permission as for Fig. 25.) 



horizontal synapticulae strengthening the gill arches. The slits open 

 in some species into an atrium formed by lateral folds, usually turned 

 upwards to leave a long mid-dorsal opening. In some species each 

 slit opens to a gill pouch. The whole branchial apparatus perhaps 



