XI. ARACHNIDA 
TO WHICH ARE ADDED 
GIGANTOSTRACA (XIPIIOSURA, TRILOBITA, EURYPTERIDA), 
PANTOPODA, TARDIGRADA, PENTASTOMIDA, MYRIOPOOA 
and PROTOTRAOIIEATA 
AKRANOED BY 
. W. T. OALMAN, D.Sc., F.R.S. 
CONTENTS. 
PAGK 
Gigantostraca. 
I. Titles = 2800 .. .. .. .. .. .. .. 4 
II. Subject-Index=:2803-2827. . .. .. .. 5 
III. Systematic Tndkx = 2831 : — 
Trilobita . . . . . . . . . . 6 
Xipliosura, etc. . . . . . . . . . . . . 7 
Eurypterida . . . . , . . . . . ; . . . 7 
Pantopoda. 
I. Titles = 2800 .. . . .. 8 
II. Subject-Ini)ex = 280o-2827 . . ,, .. .. ,, 8 
in. Systematic Index = 2831 .. .. .. .. ., 8 
