132 NATURAL HISTORY 



Bursaria, figure 99 : the anterior is ciliated, and the 

 posterior furnished with bristles. Propagates by trans- 

 verse division. 



295. Trichoda ciliata. — This is a three-sided animal- 

 cule, with the angles rounded : it has a row of long cilia, 

 like a comb, on one side, and the other fringed with short 

 bristles. Found in the common muscle. 



296. Trichoda hiilla. — This animalcule only differs 

 from the Bursaria duplella in having a cluster of cilia at 

 each extremity. Found among confervse. 



297. Trichoda pellionella. — This animalcule is nearly 

 cylindrical, with the extremities rounded ; the anterior 

 delicately ciliated, and the posterior furnished with 

 bristles. 



298. Trichoda ct/clidium. — This is more globular than 

 the preceding one, and its anterior is divided ; in other 

 respects it resembles it. 



299. Trichoda cursor. — This animalcule resembles the 

 T. augur, figure 151 ; but the anterior is symmetrical and 

 ciliated ; and in addition to the cluster of long bristles on 

 one side, there are a few on the other, near the posterior. 

 A large circular spot is observed at the head. 



300. Trichoda />w/ex resembles the T. peUionella and 

 C2/cUdium, with an indentation on the under side near 

 the head. 



301. Trichoda erosa. The escutcheon animalcule is 

 shewn at figures 180 and 181. In some specimens the 

 anterior is concave. 



302. Trichoda rosircda.— Body nearly circular : the 



