ERRATA. 



Page 51, col. 1, line 5 from bottom, for PI. 23 read PI. 30. 



56, col. 1, line 14 from bottom, for Plans read Plants. 



60, col. 2, line 11 from bottom, for PI. 2 read PI. 6. 



68, col. 2, line 21 from top, for labrum read labium. 



87, col. 1, line 15 from bottom, for Cyclostomata read Ctenostomata. 



91, col. 1, line 16 from bottom, for rhitidome read rhytidome. 



103, col. 2, line 6 from bottom, for muscular read molecular. 



112, col. 1, line 25 from top, for inorganic read organic. 



168, col. 2, line 25 from bottom, for structurs read structures. 



221, col. 2, line 11 from top, for spirillium and spirillia read spirillum and spirilla. 



231, col. 2, line 9 from bottom, for Cestoiden read Cestotdes. 



261, col. 2, line 10 from top, for DIDIMIUM read DIDINIUM. 



318, col. 1, line 27 from top, for introcellular read intracellular. 



495, col. 1, line 29 from top, for ^yVzr read 77 &ro. 



525, col. 1, line 8 from bottom, for always read also. 



577, col. 2, line 16 from bottom, for PAEAPHY'SES read PAKAPH'YSES. 



621, col. 1, line 12 from bottom, for Actinaria read Actinozoa. 



661, col. 2, line 20 from top, for pearlite read perlite. 



664, col. 1, lines 22, 25, and_26 from bottom, for Noseau read Nosean. 



675, col. 1, line 5 from bottom, for Symbistes read Symbiotes. 



682, col. 1, line 12 from top, for Spirillum read Vibrio ; and for inflexible read flexible. 



