15. 



Kediae Containing 

 produce the 

 The red! a that / osreariae of :t!chino9toma 



re vo 1 ^t UP are, I believe, thosa that have emerged 

 directly from the raother-rediae which **ere probably 

 derived by raetrvacrphcsj s from mirarddia. In all 

 structural characters the rediae producing daughter- 

 redirtr* ijnd the redi-?e producing cercari^e, seem to agree 

 at maturity. 



The red! Tie are quite oh a rant eristic even though they 

 vary greatly in sir^e, shape, c^lor, activity and number 

 of oeroari'-te and rm ballf? enclosed. 



iae oont-xininj? *iotivo or mature rariae v v ry 

 from 0.31 ^o ft. 80 mm* in length, the average being about 

 1.60 mm. The smaller rediae contain few, usually only 

 one -i^tive ceroaria and a staall number of germ balls. Th 

 larger ones may hmve as many as elev<*n aotive oeroariae 

 inside with perhips seventy good sissed germ balls, beniaea 

 many other smaller ones. Active sereariae are nearly mature 

 ^nd always contain prominent ooniretions. The count of 

 the active oeroariae was often made upon thin characteristic 

 which was found to be wholly r^li^ble. C-coasionally a 

 large re ia may oontain only one or two active oeroariae 

 and a few germ balls and on a very few occasions cnly two 

 or three geita balls and no motive ceroariae. ?hese I judge 

 to be old rediae producing their last oercariae before final 

 deterioration as several entirely empty and apparently 

 lifeless rediae ^vere seen. FTOTTI fifty redi^e t*>en '-t 

 random the average number of active oercarine proved to 

 be five with aleo at least fifty fair 8i%ed germ balls 



