UNIVERSITY OF CALIFORNIA PUBLICATIONS 



IN 



ZOOLOGY 



Vol. 13, No. 4, pp. 43-122, pis. 3-7, 4 text figures May 4, 1914 



DIPLODINIUM ECAUDATUM 



WITH AN ACCOUNT OF ITS NEUROMOTOR 

 APPARATUS 



BY 

 EOBEET G. SHAEP 



CONTENTS 



PAGE 



A. Introduction 44 



1. Eeview of literature 45 



2. Present status 49 



3. Validity of species 51 



B. Technique 52 



1. Living material 52 



2. Methods of fixation and staining 55 



C. General discussion of the genus 58 



1. Diplodinium ecaudatum forma eeaudatum 62 



(a) Ectoplasmic structures 63 



(1) Cuticle 63 



(2) Skeletal areas 64 



(3) Ectoplasm 65 



(4) Skeletal structures 65 



(5) Boundary layer 67 



(b) Entoplasm 68 



(c) Organs of the body 69 



(1) Macronucleus 69 



(2) Micronucleus 71 



(3) Organs of locomotion 72 



(4) Organs of food-taking 77 



(5) Organs of defecation 80 



(6) Organs of excretion 82 



(7) Neuromotor apparatus 82 



(d) Eetracted form 88 



2. Diplodinium ecaudatum forma caudatum 90 



3. Diplodiuium ecaudatum forma bicaudatum forma nova 92 



MAY 14 



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