XI. ARACHNIDA 
TO WHICH ARE ADDED 
GIGANTOSTRAUA (XIPIIOSURA, TRILOBITA, EURYPTERIDA), 
PANTOPODA, TARDIGRADA, PENTASTOMIDA, MYRIOPODA 
and PROTOTRACHEATA 
ARRANGED BY 
W. T. CALMAN,- D.Sc. 
CONTENTS 
PAGE 
Gigantostraca. 
I. Titles = 2800 . . .. .. .. .. . . 4 
II. Subject-Index=2810-2827. . .. .. .. .. 4 
III. Systematic Indkx = 2831: — 
Trilobita . . . . . . . . . . . . . . 5 
Xipbosura [vacant] 
Eurjpterida [vacant] 
Pantopoda. 
I. Titles=2800 .. .. .. .. .. .. .. 7 
II. Subject Index=2807-2827. . .. .. .. .. 7 
III. Systematic Index= 2831 .. .. .. .. .. 8 
(n-8818 n ) 
c 12 
