2 
CHAETOGNATHA, GASTROTRICHA, ROTIFERA. 
PAGE 
Subject-Index : — 
' Comprehensive and General =1603 .. .. ..25 
Structure=1607 .. .. . .. .. .. 25 
Physiology =1611 .,25 
Development= 1615 .. .. .. .. .. .. 25 
Ethology=1619 .. .. .. ..25 
Variation, PhyIogeny= 1623 . . .. .. .. ..25 
Distribution (Geography) = 1627 .. .. .. .. 25 
Systematic = 1631 : — 
Chaetognatha ' . . . . . . . . . . . . . . 25 
Gastrotricha . . . . . . . . . . . . . . 26 
Rotifera . . . . . . . . . . . . . . 26 
ANNELIDA, GEPHYREA, PHORONIDEA, 
PTEROBRANCHIATA. 
Subject-Index; — 
Comprehensive and General =1803 .. 26 
• Strucfcure=1807 .. .. ., .. ..26 
Physiology =1811 .. .. .. ., .. ..26 
Development=1815 ., .. .. .. .. .. 27 
Ethology=1819 '. . .. .. , .. .. .. 27 
Variation, Phylogeny= 1823 . . .. .. .. .. 27 
Distribution (Geography) = 1827 .. .. .. .. 27 
Systematic = 183 1 : — 
Annelida .. .. .. .. .. .. .. 27 
Archiannelida (vacant). 
Polychaeta . . . . , . . . . . , . . . 27 
Myzostomida .. .. .. .. .. ..34 
Oligochaeta . . .... . . . . , . . . 34 
Hirudinea . . . . . . . . , . . . . . 35 
Echiuroidea . . , . . . . . . . . . . . 35 
Gephyrea . . . . . . . . . . • . , . . 35 
Phoronidea ,, ,, .. .. ..35 
Pterobranohiata . . 35 
