Verm. 1 
XY. VERMES. 
BY 
Arthur Willey, D.Sc. 
CONTENTS. 
Page 
I. Titles.2 
II. Subject-Index. 
Vermes (s.l.) 
General Biology (referring 
to more than one di- 
vision). 
. 24 
Annelida 
Gephyrea 
(a) General Biology. 
. 24 
(b) Distribution . . 
. 25 
(c) Systematic . . 
25 
Polychieta 
(a) General Biology. 
. 25 
(b) Distribution . 
. 26 
(c) Systematic . . 
. 27 
OligocliEeta 
(a) General Biology. 
. 28 
(b) Distribution . . 
. 28 
(c) Systematic . . 
. 29 
Hirudinea 
(a) General Biology. 
. 31 
(b) Systematic . . 
. 32 
Plathelminthes 
Nemertina 
(a) General Biology. 
. 32 
(b) Distribution . . 
. 33 
(c) Systematic . . 
. 33 
Turbellaria 
(a) General Biology. 
. 33 
(b) Distribution . . 
. 33 
(c) Systematic . . 
. 33 
1899. [Vol. xxxvi.] 
Page 
Cestoda 
(a) General Biology. . 35 
(b) Distribution ... 35 
(c) Systematic ... 35 
Trematoda 
(a) General Biology. . 37 
(b) Distribution ... 38 
(c) Systematic ... 38 
Nemathelminthes 
Nematoda 
(a) General Biology. . 44 
(b) Distribution ... 45 
(c) Systematic ... 45 
Acanthocephal a 
Systematic.47 
Chsetognatha 
Distribution .... 47 
Adelotacta 
Rotifera 
(a) General Biology. . 47 
(b) Distribution ... 47 
(c) Systematic ... 48 
Gastrotricha 
Distribution .... 48 
Mesozoa 
(a) General Biology. . 48 
(b) Systematic ... 48 
Hemichorda 
(a) General Biology . . 49 
(b) Distribution.... 50 
(c) Systematic .... 50 
F 1 
