Verm. 1 
XV. VERMES. 
BY 
Florence Buchanan, B.Sc. 
CONTENTS. 
Introduction 
Page 
2 
I. Titles of Annelida, 
Platyhelminthes, and 
Nemathelminthes . . 
II. Biology. 
General ‘ . . . 
’ External features .... 
Integument 
Muscular System .... 
Digestive System .... 
Body Cavity and its contents, 
Parenchyme, Glands, &c. . 
Vascular System and its con- 
tents 
Respiratory System . . . 
Excretory System . . . . 
Nervous System 
Sense Organs 
Genital System 
Reproduction 
Development & Life-History 
Regeneration 
Variations and Anomalies . 
Physiology and Experimental 
Observations 
Medical and Economic Notes 
Classification 
Habits, &c 
Parasites 
Methods 
5 
19 
19 
20 
20 
20 
20 
21 
21 
21 
22 
22 
22 
22 
23 
23 
24 
24 
24 
25 
25 
25 
26 
III. Distribution. 
Geographical 26 
Marine Forms 26 
Land and Fresh- water 
Forms 27 
Pago 
Distribution — cont. 
Geological . 29 
In or on other Organisms . . 29 
IV. Systematic. 
Annelida 
Gephyrea 
Inermia 30 
Armata 31 
Chaetopoda 
Polychaeta 31 
Oligochaeta and Branchi- 
obdellidao 36 
Myzostomidae .... 37 
Archiannelida ..... 37 
Hirudinea 37 
Platyhelminthes 
Cestoda 38 
Trematoda 39 
Nemertinea 40 
Turbellaria 41 
Nemathelminthes, &c. 
Nematoda and Gordiidae . 42 
Acanthocephala .... 44 
-Chaetognatha 44 
V. Hemichorda (including 
Phoronis ), Titles, &c. . 44 
Biology . . 45 
Distribution . 46 
Systematic . 46 
VI. Rotifera and Gastro- 
tricha, Titles ... 46 
Biology . . 47 
Distribution . 48 
Systematic . 48 
VII. Mesozoa [Vacant] 
