88 
189(3) for other species, and referred to above in connection with 
Hyrnenolejjis nana. 
Transverse fibers are comparatively few, and are prominent at all, 
only in the region where one segment joins the next. The dnrso- 
vent rat fibers are also more prominently developed near the junction of 
the segments. 
Fig. 82.— Pro^l ttid of H. diminuta by transmitted light. Uterus developed and containing ova: ov., 
ovary; t., teste;: ah, uterus; ves. sem., rec. ae/ft.,vesicula seminalis and receptaculum seminis; r. ex. can., 
ventral lateral excretory canal; y, g., yolk gland. Enlarged. (After Grassi, 18881, pi. 11, fig. 12.) 
The rostellum is supplied with longitudinal and circular libers, an 
outer longitudinal and inner circular (Zschokke. 1889). In the scolex 
there are found muscle libers running* in various directions, with 
various attachments. 
Excketory system. — The excretory canals (tigs. 71, 82. 81, 88) are 
laterally situated. The ventral pair as usual are much the larger, and 
are connected in the posterior part 
of each seg’nient by a transverse 
canal (hg. 81) of smaller caliber. 
The dorsal canals lie close to the 
dorsal side of the ventral canals,, 
and are much smaller except in 
the scolex and the anterior part 
of the .strobila where the ventral 
canals are of small diameter, onh" 
a little larger than the dorsal 
canals (fig. 71). In the scolex 
there is an anastomosis of the 
four canals behind the rostellum. Extending forward from this anas- 
tomosis, there are two loops, one on either side of the rostellum, into 
which also, the excretorv svstem is extended bv means of four verv 
slender canals, which unite in the rostellum to form two closed 
loops, the dorsal canal of each side uniting with the corresponding 
ventral canal. Similar loops, as found by Mingazzini (1899), in 
Hyraenolepis nana have already^ been mentioned in connection with 
that form. 
■ rec. sen?. 
i.1- ; I 
Fig. 83. — Proglottid of H. diminuta further devel- 
oped than fig. 79: rec. sem., receptaculum seminis: 
t., remnants of testes; ut., uterus. Enlarged. 
(After Grassi, 18881, pi. 11, fig. 12.) 
