Plate I. Electron micrograph showing transverse sections of 

 the flagella and basal bodies of Pseudotrichonympha. 

 The flagellar shaft structure is seen at the top, where several 

 flagella are aligned in grooves, with connexions between some 

 peripheral fibrils and granules on the inside of the walls of the 

 groove. Sections lower down on the plate show the structure of 

 basal bodies at successively deeper levels. Note especially : 

 the distal end of C subfibrils and traces of the basal plate (at 

 upper left), the three central cylinders (middle), and the 

 connexions between the fibril triplets both through the hub 

 and spokes and through A-C connexions (lower middle). 

 From Gibbons and Grimstone (1960). x 95,000. 



