Bacillaria.] THE infusorta. 239 



geniculata. Length, including stalk, 1-lOOth to l70tb. 

 Size of ova, below 1- 240th. 



355. AciNETA tuberosa {Vorticella tuherosa, M.) The 

 horned Acineta has a triangular compressed lorica, dilated 

 and truncated anteriorly, and having from two to three 

 obtuse knobs or horns, the lateral ones tentaculated, the 

 pedicle simple and slender. Size 1-2 1 0th to I -100th. 



356. Acineta mystacina {Vorticella, Shrank). The long- 

 bearded Acineta is subglobose, obtusely horned, with two 

 elongated fasciculi of tentacules, and a slender pedicle, as 

 seen in fig. 205. Found upon Oedogonium. Length of 

 whole body 1 -860th to 1-1 20th. 



