Bull. U, S. F. C. 1 899. (To face page 492.) 



Plate II. 



fi, Erhinorhi/nchtis sp. (a), from Lni}hotatitus chamxkonticms. x 46. 



7. Probo.sc'i,'- of same, x IW. 



f<. Erhinorhniichus sp. (b I, imm same host, x fi.'i. 



9. Proboscis of same, near apex, x 400. 



10. Probo.spis of same, near base, x 100. 



11. Erfiinorhnnchus/iieiJ'ormisZedeT (?). from Opmiiiif lau. x tB. 



a, Hooks of same, x 400. 



12. Echivnrhifm'hds pioti mt AVe^trimib. from O/noscion ref/aUh\ longi- 

 tudinal section of heaii anrt neek perforating intestinal wall of 

 host. The mucous men.brane {mm] is continuous over the 

 head of the parasite, . 20. 



IS. Section passing somewhat diagonally tlirough neck of another 

 para.site. also penetrating intestinal wall of same host, x 65. 

 m. Muscular layer: mH/, mucous membrane. 



