200 



EDWIN LINTON. 



water decanted. About lOO sporocysts were obtained. These 

 lay motionless on the bottom of the dish. They were easily seen 

 on a black background, being whitish translucent. They were 

 short oblong with rounded ends, often slightly arcuate. 



Fig. 2. Sporocyst from Ilyanassa obsoleta, flattened under cover glass, fixed 

 over flame, stained and mounted in balsam, a, cercariae. b, germinal cell masses 

 and young stages of cercariae. Length of sporocyst 0.80 millimeter. 



July 22, about 300 snails from Tarpaulin Cove were broken 

 open and about 80 of them removed from their shells. A few of 

 these were looked over carefully, much of the material being 



