86 
77 79 
Fig. 77.— Proglottidsof H. diminuta showing usual, A, and unusual, B, position of testes. Enlarged. 
(After Grassi, 18881, pi. 11, fig. 14.) 
Fig. 78. — Portion of strobila of H. diminuta about 4 cm. from the head. Enlarged. (After E. Parona, 
1884, fig. 5.) 
Fig. 79. — Portion from the middle of strobila of H. diminuta. Enlarged. (After E. Parona,' 1884, 
fig. 6.) 
each segment also, according to Zschokke (1889), the lateral trunks 
give off in the anterior and posterior regions of the proglottis, 
respectively, two nerves which run mediad, one in the cortical portion 
of the parenchyma, i. e.. outside the layer of transverse muscle libers. 
INTERNAL ANATOMY. 
Calcareous corjnisdes are present, more commonly noticed in the 
anterior part of the strobila. are of variable size and form, but gener- 
ally oval, measurino' 8 to 13 /f by 1 to 6 (ffg. Tl). 
XEPtVOUS SYSTEM. — Two prominent long ituclinal nerve trunhs extend 
~b 76 
Fig. 75. — Proglottid of H. diminuta showing niale organs: c. p., cirrus pouch: t., testis: r. def.. vas def- 
erens; ves. sem., vesicula seminalis. Enlarged. (After Grassi, 18881. pi. 11, fig. 10.) 
Fig. 76. — Proglottid of showing female organs: ov., ovary: rec. scm., receptaculum semi- 
nis; rag., vagina; y. g., yolk gland. Enlarged. (After Grassi, 18881, pi. 11, fig. 10.) 
throughout the strobila, one on each side, situated a short distance 
laterad from the excretory vessels. Two small accessory longitudinal 
nerves are also present on each side, lying close to the dorsal and 
ventral sides, respectively, of the main lateral longitudinal nerre. In 
