VI. VERMIDEA 
ARRANGED BY 
F. A. POTTS 
Tho groups included under Vermidea are — 
(1) PLATYHELMINTHES, NEMERTINEA, MESOZOA; (2) NEMA- 
THELMINTHES ; (3) ClIAETOGNATHA, ROTIFERA, 
GASTROTRICHA ; (4) ARCHIANNELIDA, POLYCHAETA, 
OL1GOCHAETA, GEPHYREA, PHORONIS, HIRUDINEA. 
For ENTEROPNEUSTA vide PROCHORDATA 
CONTENTS 
PAGE 
Titles (for the four divisions) .. .. . . . . 3 
PLATYHELMINTHES, NEMERTINEA and MESOZOA 
Subject Index : — 
General =1203 . . ... ..22 
Structure=1207 .. .. .. .. .. ..22 
Physiology =1211 .. .. .. . . .. ..23 
Development^ 1215 .. .. .. .. .. .. 23 
Ethology =1219 24 
Variations: 1223 .. .. .. .. .. ..24 
Distribution =1227 .. .. .. .. .. ..24 
Systematic Index=1231: — 
Piatyhelminthes . . . . . . . . . . . . 25 
Turbellaria . . . . . . . . . . . . . . 25 
Trematoda . . . . . . . . . . . . . . 27 
Cestoda . . . . . . . . . . . . . . 29 
Nemertinea .. .. .. .. .. .. ..31 
Mesozoa .. .. .. .. .. .. .*31 
(n-10189 o) to 14 
