342 



ZOOLOGY 



SECT. 



and with them food-particles, towards the mouth (mo) : they are 

 also capable of being bent in various directions. In the interior of 



tent 



a.v 



FIG. 276. Bugula avicularia. Two zooids, magnified, an. anus ; avlc. avioularia ; emb. 

 embryo enclosed in the ocecium ; 'funic. funiculus ; (fast, muscular bands passing from the 

 stomach to the body- wall ; int. intestine ; mo. mouth oce. oceciunu; <xs. (esophagus ; ov. ovary ; 

 ph. pharynx ; ret. parieto- vaginal muscles ; sp. spermatidia ; stoiti. stomach ; tent, tentacles. 

 The ganglion, which is not indicated, lies just below the middle of the stroke from mo. 



each is a narrow prolongation of the crelome. In all probability, 

 besides bringing minute particles of food to the mouth of the zooid 

 by the action_of their cilia, the tentacles are prehensile as well as 



