PLATE IX. 



Fig. 6i. Chlatnydovioiias s^. (?), x 1300, - - - - 51 



Fig. 62. ClilamydoDwnas sp., x 1300, - - - - ^2 



Fig. 63. CJilaniydonwnas sp., same as preceding sp., x 1300, 52 



Fig. 64. Traclielonionas piscatoris^ x 650, - - - 41 



Fig. 65. Trachelomonas cylindrica (?), x 720, - - - 41 



Fig. 66. Trachelo7nonas armata, x 620, ... ^2 



Fig. 67. Trachelomonas volvocina, x 650, - - - - 43 



Fig. 68. Trachelomonas volvocina , x 650, ... 4^ 



1 



