NEW SPECIES OF HYMENOLEPIS. 



245 



Explanation of Plate VII. 



(IH* 





/ . 



\t C\^F- 1 1 1 1 lYl 

 IvUn Lt_ i I U 1 1 1 



Cm 



Cirrus. 



V C 



1VU3U. llUtll D 1 l L . 



cp. 



v^iri LIS poucn. 



Sf. 



oemiuai 1 cct-piacic 



dv. 



Dorsal vessel 



SV. 



Seminal vesicle. 



e g- 



Eggs. 



t. 



Testes. 



exc. 



Excretory Canal 



tit. 



Uterus. 



Im. 



Longitudinal muscle. 



vet. 



Vas deferens. 



m. 



Muscle. 



1 e> ' 



Vagina. 



n. 



Neck. 



VV. 



Ventral vessel 



ov. 



Ovary. 



yg- 



Yolk gland. 



Figs. 1-10. 



Hymcnolepis exigua n. sp. 



Fig. I. Drawn from compressed total preparation of a contracted 

 specimen. 



2. Another specimen, extended. x 20. 



3. A hook from rostellum. x 390. 



4. Scolex and some anterior segments, x 140. 



5. Some widest segments from near the posterior end. 

 x 140. 



6. Posteriormost segments, x 140. 



7. Cross-section of cirrus pouch, x 350. 



8. Combination figure of transverse sections, somewhat 

 diagrammatic. 



Fig. 9. Cross-section of an anterior segment, x 240. 

 Fig. to. Cross-section of a posterior segment, x 140. 



Fig. 

 Fig. 

 Fig. 

 Fig. 



Fig. 

 Fig. 

 Fig. 



Fig. 11—16. 



Hymcnolepis inçvmis n. sp. 



