3 
Opiliones 
Acari . . 
Oribatidae, etc. . . 
Gamasidae. . 
Ixodidae aud Argasidae . . 
Trombidiidae, etc. 
Ilydrachnidae 
Bdellidae . .. 
Sarcoptidae 
Tyroglyphidae 
Demodicidae 
Eiiophyidae 
Tardigrada 
Pentastomida 
Myriopoda. 
I. Titles =3400 .. 
II. Subject-Index= 3403-3427 
General 
Structure 
Development 
Ethology 
Variation 
Distribution 
III. Systematic Index=3431 
Chilopoda 
Symphyla 
Pauropoda . . 
Diplopoda 
PAGE 
36 
38 
38 
39 
39 
40 
42 
43 
43 
43 
44 
44 
44 
44 
45 
47 
47 
47 
48 
48 
48 
49 
50 
50 
50 
Prototracheata. 
I. Titles=3200 . . . . . . . . . . . 53 
II. Subject-Index =3203-322 7 .. .. .. 53 
III. Systematic = 3231 .. 53 
(n- 9186 ») d 5—2 
