PLATE XLII. 



ritlCHOSritOXGYLUS J-EIIUIIALILIS AND ])A\'AIXEA UJlOdALU. 







Fi.;. n. 



Fig. 13. 



Fi... r. 



Fii.. 1-1. 



Flii. 11. (>">) showing large nnmliui-s of T. prrymfills on tlie inturniil snrfacc of the cucum of a diiieiiscfl (ironse (No. 13). 

 Fk;, 12. (100) .showing ii spociniun of T. jin-;/m,-ilis (in section) lietween two villi. The ejiithclium lias been lo.»t and 



fihrous tissue («) has lieen formed within one of the villi in the neighhoiirhooil of the worm. 

 Fio. 13. (J nat. size) showing two tnlies containing the speeiniens of Ihuuima urngalli (on the left) and of Itiimeitol'-pis 



iin'i'rops (on the right) ohtained from Grouse No. 11. 

 Fl(i. 14. (nat. size) .showing a tangled mass of liiivuhifit iiiiiijuHi (partially opened out) from the int«stine of a Grouse. 



Opposite p. 287.] 



