3 
PAGE 
Acari . . . . . . . . . . . . . . . . 17 ’ 
Oribatidae, etc. . . . . . . . . . . • . 17 
Garaasidae. . . . .... . . . . 17 
Ixodidae and Argasidae . . . . . . . . 18 
Trombidiidae, etc. . . . . . . . . . 18 
Hydrachnidae . . . . . . . . . . 18 
Halaearidae .. .. .. .. .. .. 19 
Bdellidae (vacant). 
Sarcoptidae .. .. .. .. . . .. 19 
Tyroglyphidae .. .. , . .. .. ..19 
Demodicidae .... .. .. .. .. ..19 
Eriophyidae . . . . . . . . . . . . 19 
Tardigrada .. . * . . i. ..19 
Pentastomida (vacant). 
Myriopoda. 
I. Titles=3400 .. . • .. .. .. . . . . 20 
II. Subject-Index= 3403-3427 : — 
General (vacant). 
Structure . . . . . . . . . . . • . . 21 
Physiology (vacant). 
Development.. .. .. .. .. .. ..21 
Ethology .. .. .. .. .. .. 21 
Variation and Aetiology .. .. .. .. .. 21 
Distribution (Geographical and Geological) . . . . 21 
III. Systematic Index = 3431 : — 
Chilopoda .. .. .. .. .. ., .. 21 
Symphyla . . . . . . . . . . . . 22 
Pauropoda (vacant). 
Diplopoda . . . . . . . . . . . . 22 
Prototracheata. 
I. Titles=3200.. ... .. .. 24 
II. Subject-Index = 3203-3227 .. .. .. 24 
III. Systematic = 3231 .. .. .. .. .. ..24 
(n-4840 n ) 
b 16-2 
