UNIVERSITY OF CALIFORNIA PUBLICATIONS 



IN 



ZOOLOGY 



Vol. 20, No. 2, pp. 21-40, plates 3-4, 2 figures in text July 14, 1919 



STUDIES OX THE PARASITES OF THE TER 



MITES II. ON TRICHOMITUS TERMITIDIS, 



A POLYMASTIGOTE FLAGELLATE 



WITH A HIGHLY DEVELOPED /^^ 



NEUROMOTOR SYSTEM 



Zfh 



CHARLES ATWOOD KOFOID and OLIVE SWEZY '^ ' 



CONTENTS 



PAGE 



Introduction 21 



Occurrence 22 



Morphology 23 



Shape and size of body 23 



Cytoplasm 24 



Cytostome :. - .. 26 



Neuromotor system 26 



Nucleus 29 



Mitosis - 31 



Binary and multiple fission 35 



Encystment 36 



Relationships 36 



Summary ' 37 



Literature cited 37 



Explanation of plates 38 



INTRODUCTION 



The occurrence in polymastigote flagellates of a structurally inte- 

 grated fibrillar complex consisting of centrosome, rhizoplast, blepliaro- 

 plast, axostyle, undulating membrane, parabasal body, and flagella in 

 Trichomonas was described by us (1915) and the complex designated 

 as an extra-nuclear motor apparatus. Its analogy to the neuromotor 

 apparatus of the ciliate Diplodinium was noted. 



