29 
Fig. 30. — Dorsal, apex, and lateral views of the head of beef-measle tapeworm (Tsenia saginata), 
showing a depression in the center of the apex, x 17. (After Stiles, 1898a, 74, fig. 70.) 
Fig. 31. — Segments from various strobilse of beef-measle tapeworm ( Ttenia naginata), showing forms 
of proglottids which are occasionally found: a, elongated segments; b, bead-like segments; c, a portion 
of the strobila in which the segmentation is not distinct; d, moniliform segments (a and b after Stiles, 
1898a, 75. fig. 71; c and d after Blanchard, 1894). 
Fig. 32.— Sexually mature segment of beef-measle tapeworm ( Tsenia saginata): c. p., cirrus pouch, 
with cirrus; d. c., dorsal canal; g. p., genital pore; n., lateral longitudinal nerves; ov., ovary; 
s. g., shell glands; t., testicles; ut., median uterine stem; v., vagina; v. c., ventral canals connected 
by transverse canal, t. c.; v. d., vas deferens; v. g., vitellogene gland. Enlarged. (After Leuckart 
and Stiles. ) 
