284 A. EARLAND OX RADIOLARIA. 



lower half of the shell is situated the central capsule, which 

 exhibits the characteristic astropyle and proboscis. Streams of 

 sarcode arise from the central capsule and pierce the calymma 

 inside the shell. There are no lateral parapyke in this Family. 

 X 27 diameters. 



Fig. 4a. Central capsule of Aidospathis hi/urca, Haeckel, a 

 Kadiolarian of the Fourth Legion (Phasodaria), surrounded by 

 the Phseodium, which has been partly removed. The central 

 <;apsule has the double membrane characteristic of the legion, 

 <and contains a large nucleus with many nucleoli. The intra- 

 capsular protoplasm contains many vacuoles. At the bottom is 

 the radiate operculum of the astropyle; at the top are the two 

 lateral parapyla?. x 53 diameters. 



Joi'.ni. Qv.eim Microscopical C'U'-, i-er. 2, Vol. I'll., No. 4(3, April 1'jOO 



