2 
Arachnida (ind. Tardigrada and Pentastomida). 
I. Titles=3000 
II. Subject-Index = 3003-3027 : — 
Ilyperzoology 
Structure 
Physioktgy . . 
Development. . 
Ethology 
Variation 
Distribution (Geographical and Geological) 
III. Systematic = 3031 
General 
Scorpiones . . 
Peclipalpi 
Palpigradi . . 
Araneae 
Liphistiidae 
Aviculariidae 
Oloboridae 
Psechridae 
Zoropsidae 
Dictynidae. . 
Eresidae . . 
Oonopidae . . 
Sicariidae . . 
Dysderidae 
Oaponiidae 
Drassidae . . 
Zodariidae . . 
Hersiliidae. . 
Pholcidae . . 
Theridiidae 
Argiopidae 
Archaeidae 
Mimetidae. . 
Thomisidae 
Clubionidae 
Agelenidae 
Pisauridae . . 
Lycosidae . . 
Oxyopidae . , 
Salticidao . . 
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