412, MR. H. A. BAYLIS ON A 
Text-figure 4. 
Tetrabothrius strangulatus. 
A. Portion of a horizontal section through a sexually mature segment. 
B. Portion of a transverse section passing through a genital atrium and cirrus-sac. 
C., Cirrus (‘‘male cloacal canal”); C’., dilated portion of cirrus; C.S., cirrus- 
sac; D.V., dorsal excretory vessel; G.A., genital atrium; L.M., longitudinal 
muscles; Ov., Ovary; 7.M., transverse muscle-fibres; Vag., vagina; V.F., 
ventral excretory vessel; JM., excretory canal. 
