Verm, i 
XV. VERMES. 
BY 
Florence Buchanan, B.Sc. 
CONTENTS. 
Page 
Introduction 2 
I. Titles of Annelida, 
Platyhelminthes, and 
Nemathelminthes . . 4 
II. Biology. 
General 17 
External features, Head and 
Tail, with their Appendages 1 8 
Integument 18 
Muscular System . . . . 18 
Digestive System .... 18 
Body Cavity and its contents, 
Parenchyme, Glands, &c. . 19 
Vascular System and its con- 
tents 19 
Respiratory Organs ... 19 
Excretory System .... 19 
Nervous System 20 
Sense Organs 20 
Genital System . . . . . 20 
Reproduction 21 
Development & Life-History 21 
Regeneration 21 
Variations and Anomalies . 22 
Physiology 22 
Medical Notes 22 
Classification 28 
Habits, &c 23 
Parasites 23 
III. Distribution. 
Geographical 23 
Marine Forms 23 
Distribution — coni. 
Land and Fresh- water 
Page 
Forms 
25 
Geological ..... 
26 
In or on other Animals 
• • 
27 
IV. Systematic. 
Annelida 
• • 
29 
Gephyrea .... 
29 
Inermia .... 
29 
Armata .... 
29 
Chaetopoda . . . 
• • 
29 
Polychaeta . . . 
, . 
29 
Oligochaeta and Branc.hi- 
obdellidas. . . 
• • 
32 
Myzostomidao . . 
# 0 
84 
Archiannelida 
• a 
35 
Hirudinea . . . 
# # 
35 
Platyhelminthes . 
e e 
35 
Cestoda .... 
35 
Trematoda .... 
Nemertinea . . . 
Turbellaria. . . . 
Nemathelminthes, &c. 
Nematoda and Gordiidae 
Acanthocephala . 
Chaetognatha . . 
V. Hemichoiida (includ 
Phoronis), Titles, &c. . 
VI. Rotifera, Titles . 
Biology . 
Systematic 
VII. Mesozoa .... 
ng 
37 
39 
40 
42 
42 
43 
43 
44 
44 
4(5 
47 
48 
