2 
CHAETOGNATHA, GASTROTRICHA, ROTIFERA. 
PAGE 
Subject Index : — 
Comprehensive and General = 1603 , . .. .. .. 29 
Structure =160 7 .. .. .. .. .. ..29 
Physiology=1611 .. .. .. .. .. ..29 
Development=16l5 .. .. .. .. .. .. 29 
Ethology=1619 .. .. .. .. .. ..29 
Variation, Phylogeny= 1623 . . .. .. .. ..29 
Distribution (Geography) = 1627 .. .. .. .. 29 
Systematic = 1631 : — 
Chaetognatha . . . . . . . . . . . . . . 30 
Gastrotricha .. .. .. .. ..... ..30 
Rotifera . . . . . . . . . . . . 30 
ANNELIDA, SIPUNCULOIDEA, PH0R0NIDEA, 
PTEROBRANCHIATA. 
Subject Index : — 
Comprehensive and General = 1803 .. . . .. ..31 
Structure =1807 ,. .. .. .. .. ..31 
Physiology =1811 .. .. .. .. .. ..31 
Development =1815 .. .. .. .. .. ..31 
Ethology=1819 .. .. .. .. .. ..31 
Variation, Phylogeny= 1823 . . .. .. .. ..31 
Distribution (Geography) = 1827 .. .. .. ..32 
Systematic = 1831 : — 
Annelida .. .. .'. .. .. .. ..32 
Archiannelida (vacant) 
Polychaeta . . . . . . . . . . . . . ." 32 
Myzostomida . . . . . . . . . . . . 34 
Oligochaeta . . . . . . . . . . . . 34 
Hirudinea . . . . . . . . . . . . . . 36 
Echiuroidea . . . . . . . . . . . . 36 
Sipunculoidea . . . . . . . . . . . . 36 
Phoronidea (vacant) 
Pterobranchiata . . . . . . . . . . . . 37 
Incertae sedis . . . . . . . . . * . . . . 37 
