Arachn. 1 
XI. ARACHNIDA 
(Including TARDIGRADA and PENTASTOMIDA). 
BY 
A. S. Hirst. 
CONTENTS. 
Page 
I. Titles 2 
II. Biology. 
1. Morphology and Classi- 
fication 12 
2. Physiology 12 
3. Reproduction and De- 
velopment .... 12 
4. General Bionomics, Ha- 
bitats, etc 13 
5. Parasitism, etc. ... 13 
6. Miscellaneous . . . .. 13 
III. Distribution, 
a. Geographical 
1. Arctic and Antarctic . 14 
2. Europe and Mediterra- 
nean Islands . . . 14 
3. India and Further India 14 
4. Malay Peninsula and 
Archipelago ... * 14 
5. Africa 15 
6. North America . . . 15 
7. Central and South 
America and the West 
Indies 15 
8. Australasia .... 15 
9. Atlantic Islands . . 15 
10. Indian Ocean Islands . 15 
11. Pacific Islands * . . 16 
B. Geological 16 
IV. Systematic. 
Arachnida, general 
1. Scorpiones . 
2. Pedipalpi . 
3. Palpigradi . 
4. Aranese » 
Page 
A. Mygalomorphae ... 17 
B. Arachnomorphco ... 17 
Uloboridae 17 
Zoropsidae 17 
Dictynidae 18 
CEcobiidae 18 
Eresidae 18 
Leptonetidae . . . . 18 
Oonopidae 18 
Dysderidae ..... 18 
Drassidae 18 
Palpimanidae .... 19 
Zoclariidae ..... 19 
Pholcidae ..... 19 
Theridiidae ..... 19 
Argiopidae 20 
Mimetidae ..... 21 
Thomisidae 22 
Platoridae 22 
Clubionidae 22 
Agelenidae 23 
Pisauridae 23 
Lycosidae 23 
Oxyopidae ; .... 23 
Salticidae 23 
5. Solifugae 24 
6. Pseudoscorpiones . . 24 
7. Opiliones . . . t . 25 
8. Ribinuli [vacant] 
9. Acari ....... 27 
10. Tardigrada ..... 39 
11. Pentastomida . . . . 39 
. ... 16 
. ... 16 
. ... 16 
. ... 17 
. ... 17 
